$EWBC
EAST WEST BANCORP INC Stock $ewbc

$ewbc Overview Financials Valuation SEC Filings Company Website

2013 Q4 Form 10-K Financial Statement

#000110465914015311 Filed on March 03, 2014

Income Statement

Concept	2013 Q4	2013	2012 Q4
Revenue	$293.2M	$1.069B	$276.5M
YoY Change	6.03%	1.67%	2.83%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$31.30M	$79.87M	$23.50M
YoY Change	33.19%	82.56%	25.67%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$28.20M	$112.5M	$31.58M
YoY Change	-10.71%	-14.89%	-20.72%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$98.56M	$447.1M	$108.2M
YoY Change	-8.91%	5.06%	4.7%
Income Tax	$22.78M	$153.8M	$36.30M
% Of Pretax Income	23.11%	34.4%	33.55%
Net Earnings	$75.78M	$293.3M	$71.90M
YoY Change	5.4%	4.14%	8.6%
Net Earnings / Revenue	25.85%	27.45%	26.0%
Basic Earnings Per Share	$0.55	$2.10	$0.50
Diluted Earnings Per Share	$0.55	$2.09	$0.49
COMMON SHARES
Basic Shares Outstanding	137.8M shares	137.3M shares	140.3M shares
Diluted Shares Outstanding		139.6M shares

Balance Sheet

Concept	2013 Q4	2013	2012 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$895.8M		$1.323B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$177.7M	$178.0M	$107.5M
YoY Change	65.29%	64.81%	-9.59%
Goodwill	$337.4M		$337.4M
YoY Change	0.0%		0.0%
Intangibles
YoY Change
Long-Term Investments	$129.6M	$165.0M	$142.5M
YoY Change	-9.04%	-11.29%	50.21%
Other Assets	$256.0M	$256.0M
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$24.73B	$24.73B	$22.54B
YoY Change	9.74%	9.74%	2.58%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$383.0M	$383.0M	$351.0M
YoY Change	9.12%		10.38%
Deferred Revenue
YoY Change
Short-Term Debt	$995.0M	$995.0M	$995.0M
YoY Change	0.0%	0.0%	-2.45%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$383.0M	$383.0M	$351.0M
YoY Change	9.12%	9.12%	10.38%
LONG-TERM LIABILITIES
Long-Term Debt	$227.0M	$227.0M	$157.0M
YoY Change	44.59%	44.59%	-25.94%
Other Long-Term Liabilities	$33.00M	$33.00M
YoY Change
Total Long-Term Liabilities	$260.0M	$260.0M	$157.0M
YoY Change	65.61%	65.61%	-25.94%
TOTAL LIABILITIES
Total Short-Term Liabilities	$383.0M	$383.0M	$351.0M
Total Long-Term Liabilities	$260.0M	$260.0M	$157.0M
Total Liabilities	$22.37B	$22.37B	$20.15B
YoY Change	10.97%	10.98%	2.53%
SHAREHOLDERS EQUITY
Retained Earnings	$1.360B		$1.152B
YoY Change	18.08%		23.24%
Common Stock	$163.0K		$157.0K
YoY Change	3.82%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$537.3M		$322.3M
YoY Change	66.7%		177.84%
Treasury Stock Shares	25.47M shares		16.87M shares
Shareholders Equity	$2.366B	$2.364B	$2.386B
YoY Change
Total Liabilities & Shareholders Equity	$24.73B	$24.73B	$22.54B
YoY Change	9.74%	9.74%	2.58%

Cashflow Statement

Concept	2013 Q4	2013	2012 Q4
OPERATING ACTIVITIES
Net Income	$75.78M	$293.3M	$71.90M
YoY Change	5.4%	4.14%	8.6%
Depreciation, Depletion And Amortization	$31.30M	$79.87M	$23.50M
YoY Change	33.19%	82.56%	25.67%
Cash From Operating Activities	$134.5M	$425.8M	$93.30M
YoY Change	44.16%	48.1%	67.2%
INVESTING ACTIVITIES
Capital Expenditures	-$700.0K	$88.11M	-$4.500M
YoY Change	-84.44%	757.08%	50.0%
Acquisitions		$0.00
YoY Change
Other Investing Activities	-$631.5M	-$5.731M	-$1.176B
YoY Change	-46.3%	-1267.21%	-900.54%
Cash From Investing Activities	-$632.2M	-$2.735B	-$1.181B
YoY Change	-46.45%	260.36%	-920.36%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$200.0M
YoY Change		0.03%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	71.20M	1.882B	594.0M
YoY Change	-88.01%	416.67%	372.93%
NET CHANGE
Cash From Operating Activities	134.5M	425.8M	93.30M
Cash From Investing Activities	-632.2M	-2.735B	-1.181B
Cash From Financing Activities	71.20M	1.882B	594.0M
Net Change In Cash	-426.5M	-427.3M	-493.2M
YoY Change	-13.52%	298.6%	-251.61%
FREE CASH FLOW
Cash From Operating Activities	$134.5M	$425.8M	$93.30M
Capital Expenditures	-$700.0K	$88.11M	-$4.500M
Free Cash Flow	$135.2M	$337.7M	$97.80M
YoY Change	38.24%	21.81%	66.33%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
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CY2013Q4	ewbc	Percentage Of Actual Expense Paid PercentageOfActualExpensePaid	0.20	pure
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CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
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CY2011	ewbc	Tax Expense On Sale Of Available For Sale Investment Securities TaxExpenseOnSaleOfAvailableForSaleInvestmentSecurities	4100000	USD
CY2013Q2	dei	Entity Public Float EntityPublicFloat	3745654275	USD
CY2013	ewbc	Companys Liability For Losses Under Shared Loss Agreements CompanysLiabilityForLossesUnderSharedLossAgreements	675000	USD
CY2013	ewbc	Total Eligible Losses Subject To Shared Loss Agreements TotalEligibleLossesSubjectToSharedLossAgreements	3400000	USD
CY2012	ewbc	Companys Liability For Losses Under Shared Loss Agreements CompanysLiabilityForLossesUnderSharedLossAgreements	2200000	USD
CY2012	ewbc	Total Eligible Losses Subject To Shared Loss Agreements TotalEligibleLossesSubjectToSharedLossAgreements	11200000	USD
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CY2013	dei	Entity Registrant Name EntityRegistrantName	EAST WEST BANCORP INC
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0001069157
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
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CY2013Q4	ewbc	Total Covered Nonperforming Assets TotalCoveredNonperformingAssets	148268000	USD
CY2012Q4	ewbc	Total Covered Nonperforming Assets TotalCoveredNonperformingAssets	231118000	USD
CY2011Q4	ewbc	Financing Receivable Modifications Recorded Investment Covered FinancingReceivableModificationsRecordedInvestmentCovered	146709000	USD
CY2012Q4	ewbc	Financing Receivable Modifications Recorded Investment Covered FinancingReceivableModificationsRecordedInvestmentCovered	157736000	USD
CY2013Q4	ewbc	Financing Receivable Modifications Recorded Investment Covered FinancingReceivableModificationsRecordedInvestmentCovered	116007000	USD
CY2013	ewbc	Financing Receivable Modifications Recorded Investment Covered Additions FinancingReceivableModificationsRecordedInvestmentCoveredAdditions	35865000	USD
CY2012	ewbc	Financing Receivable Modifications Recorded Investment Covered Additions FinancingReceivableModificationsRecordedInvestmentCoveredAdditions	72917000	USD
CY2013	ewbc	Financing Receivables Impaired Troubled Debt Restructuring Write Down Covered FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownCovered	10167000	USD
CY2012	ewbc	Financing Receivables Impaired Troubled Debt Restructuring Write Down Covered FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownCovered	8658000	USD
CY2013	ewbc	Financing Receivable Modifications Recorded Investment Paydowns Or Reductions FinancingReceivableModificationsRecordedInvestmentPaydownsOrReductions	-67427000	USD
CY2012	ewbc	Financing Receivable Modifications Recorded Investment Paydowns Or Reductions FinancingReceivableModificationsRecordedInvestmentPaydownsOrReductions	-46881000	USD
CY2012Q4	ewbc	Financing Receivable Modifications Recorded Investment Covered Transferred To Oreo FinancingReceivableModificationsRecordedInvestmentCoveredTransferredToOREO	6351000	USD
CY2011Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	785165000	USD
CY2012Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	556986000	USD
CY2013Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	461545000	USD
CY2013	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	347010000	USD
CY2012	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	382132000	USD
CY2012	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	33815000	USD
CY2013	ewbc	Changes In Expected Cash Flows ChangesInExpectedCashFlows	251569000	USD
CY2012	ewbc	Changes In Expected Cash Flows ChangesInExpectedCashFlows	153953000	USD
CY2013	ewbc	Amount Of Loans Removed From Covered Loans AmountOfLoansRemovedFromCoveredLoans	739300000	USD
CY2012	ewbc	Amount Of Loans Removed From Covered Loans AmountOfLoansRemovedFromCoveredLoans	924700000	USD
CY2012	ewbc	Loan Discount Related To Loans Removed LoanDiscountRelatedToLoansRemoved	124700000	USD
CY2011	ewbc	Amount Of Loans Removed From Covered Loans AmountOfLoansRemovedFromCoveredLoans	932200000	USD
CY2011	ewbc	Loan Discount Related To Loans Removed LoanDiscountRelatedToLoansRemoved	102100000	USD
CY2012Q4	us-gaap	Fdic Indemnification Asset FDICIndemnificationAsset	316313000	USD
CY2013Q4	us-gaap	Fdic Indemnification Asset FDICIndemnificationAsset	74708000	USD
CY2013	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	99055000	USD
CY2013	ewbc	Reductions Reductions	95536000	USD
CY2012	ewbc	Reductions Reductions	143988000	USD
CY2013	ewbc	Fdic Repayments FdicRepayments	47014000	USD
CY2012	ewbc	Fdic Repayments FdicRepayments	17019000	USD
CY2011Q4	ewbc	Fdic Loss Sharing Receivable FDICLossSharingReceivable	76646000	USD
CY2012Q4	ewbc	Fdic Loss Sharing Receivable FDICLossSharingReceivable	73091000	USD
CY2013Q4	ewbc	Fdic Loss Sharing Receivable FDICLossSharingReceivable	30261000	USD
CY2012	us-gaap	Fdic Indemnification Asset Additional Estimated Losses FDICIndemnificationAssetAdditionalEstimatedLosses	72539000	USD
CY2012	us-gaap	Fdic Indemnification Asset Cash Payments Received FDICIndemnificationAssetCashPaymentsReceived	76094000	USD
CY2013	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	97065000	USD
CY2012Q4	ewbc	Noncovered Loans Receivable Gross NoncoveredLoansReceivableGross	11958873000	USD
CY2012Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	-19301000	USD
CY2012Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	229382000	USD
CY2012Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	11710190000	USD
CY2013Q4	ewbc	Noncovered Loans Receivable Gross NoncoveredLoansReceivableGross	15678317000	USD
CY2013Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	-23672000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	241930000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	15412715000	USD
CY2012Q4	ewbc	Accrued Interest On Loans Receivable AccruedInterestOnLoansReceivable	76800000	USD
CY2013Q4	ewbc	Accrued Interest On Loans Receivable AccruedInterestOnLoansReceivable	94500000	USD
CY2013Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	10570000000	USD
CY2012Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	8880000000	USD
CY2013	ewbc	Number Of Loans Negatively Amortizing NumberOfLoansNegativelyAmortizing	0	item
CY2012	ewbc	Number Of Loans Negatively Amortizing NumberOfLoansNegativelyAmortizing	0	item
CY2013Q4	ewbc	Noncovered Commercial Real Estate Loans And Noncovered Residential Loans Secured By Real Properties Located In California Concentration Risk Percentage NoncoveredCommercialRealEstateLoansAndNoncoveredResidentialLoansSecuredByRealPropertiesLocatedInCaliforniaConcentrationRiskPercentage	0.86	pure
CY2013	ewbc	Loans Acquired During Period LoansAcquiredDuringPeriod	776700000	USD
CY2013	ewbc	Carrying Amount Of Loans Acquired CarryingAmountOfLoansAcquired	759300000	USD
CY2013Q4	ewbc	Percentage Of Purchased Loans Classified As Student Loans PercentageOfPurchasedLoansClassifiedAsStudentLoans	0.63	pure
CY2013Q4	us-gaap	Loans Receivable Held For Sale Net LoansReceivableHeldForSaleNet	204970000	USD
CY2012Q4	us-gaap	Loans Receivable Held For Sale Net LoansReceivableHeldForSaleNet	174317000	USD
CY2013	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	117300000	USD
CY2013	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	4000000	USD
CY2012	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	351900000	USD
CY2011	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	652700000	USD
CY2012	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	14600000	USD
CY2011	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	14500000	USD
CY2013Q4	ewbc	Number Of Grades Risk Rating System NumberOfGradesRiskRatingSystem	8	item
CY2013	ewbc	Number Of Loss Grade Loans NumberOfLossGradeLoans	0	item
CY2013Q4	ewbc	Increase Decrease In Non Covered Loans Graded Substandard And Doubtful IncreaseDecreaseInNonCoveredLoansGradedSubstandardAndDoubtful	29300000	USD
CY2013Q4	ewbc	Percentage Increase Decrease In Non Covered Loans Graded Substandard And Doubtful PercentageIncreaseDecreaseInNonCoveredLoansGradedSubstandardAndDoubtful	0.06	pure
CY2012Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	34414000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	30282000	USD
CY2012Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	9183000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	9956000	USD
CY2012Q4	ewbc	Financing Receivable Past Due And Still Accruing FinancingReceivablePastDueAndStillAccruing	43597000	USD
CY2013Q4	ewbc	Financing Receivable Past Due And Still Accruing FinancingReceivablePastDueAndStillAccruing	40238000	USD
CY2012Q4	ewbc	Financing Receivable Less Than90 Days Past Due And Not Accruing FinancingReceivableLessThan90DaysPastDueAndNotAccruing	27207000	USD
CY2013Q4	ewbc	Financing Receivable Less Than90 Days Past Due And Not Accruing FinancingReceivableLessThan90DaysPastDueAndNotAccruing	40462000	USD
CY2012Q4	ewbc	Financing Receivable90 Days Or More Past Due And Not Accruing FinancingReceivable90DaysOrMorePastDueAndNotAccruing	80902000	USD
CY2013Q4	ewbc	Financing Receivable90 Days Or More Past Due And Not Accruing FinancingReceivable90DaysOrMorePastDueAndNotAccruing	71189000	USD
CY2012Q4	ewbc	Financing Receivable Not Accruing FinancingReceivableNotAccruing	108109000	USD
CY2013Q4	ewbc	Financing Receivable Not Accruing FinancingReceivableNotAccruing	111651000	USD
CY2013	ewbc	Loans Receivable Nonaccrual Of Interest On Nonaccrual Loans LoansReceivableNonaccrualOfInterestOnNonaccrualLoans	7410000	USD
CY2012	ewbc	Loans Receivable Nonaccrual Of Interest On Nonaccrual Loans LoansReceivableNonaccrualOfInterestOnNonaccrualLoans	7206000	USD
CY2011	ewbc	Loans Receivable Nonaccrual Of Interest On Nonaccrual Loans LoansReceivableNonaccrualOfInterestOnNonaccrualLoans	9384000	USD
CY2013	ewbc	Loans Receivable Interest Recognized On Nonaccrual Loans LoansReceivableInterestRecognizedOnNonaccrualLoans	2319000	USD
CY2012	ewbc	Loans Receivable Interest Recognized On Nonaccrual Loans LoansReceivableInterestRecognizedOnNonaccrualLoans	2269000	USD
CY2011	ewbc	Loans Receivable Interest Recognized On Nonaccrual Loans LoansReceivableInterestRecognizedOnNonaccrualLoans	3519000	USD
CY2013	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	5091000	USD
CY2012Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	11981484000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	15731398000	USD
CY2012Q4	ewbc	Financing Receivable Non Covered Loans And Loans Held For Sale Gross FinancingReceivableNonCoveredLoansAndLoansHeldForSaleGross	12133190000	USD
CY2013Q4	ewbc	Financing Receivable Non Covered Loans And Loans Held For Sale Gross FinancingReceivableNonCoveredLoansAndLoansHeldForSaleGross	15883287000	USD
CY2012Q4	ewbc	Financing Receivable Recorded Investment Non Covered Loans And Loans Held For Sale Net FinancingReceivableRecordedInvestmentNonCoveredLoansAndLoansHeldForSaleNet	12113889000	USD
CY2013Q4	ewbc	Financing Receivable Recorded Investment Non Covered Loans And Loans Held For Sale Net FinancingReceivableRecordedInvestmentNonCoveredLoansAndLoansHeldForSaleNet	15859615000	USD
CY2012	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	4937000	USD
CY2011	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	5865000	USD
CY2013	ewbc	Financing Receivable Restructured Note Split Number FinancingReceivableRestructuredNoteSplitNumber	2	item
CY2013	ewbc	Number Of Days Troubled Debt Restructurings Become Delinquent NumberOfDaysTroubledDebtRestructuringsBecomeDelinquent	P90D
CY2012	ewbc	Financing Receivable Modifications Subsequent Default Recorded Investment Charge Off Or Transferred FinancingReceivableModificationsSubsequentDefaultRecordedInvestmentChargeOffOrTransferred	271000	USD
CY2012Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	235040000	USD
CY2012Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	167147000	USD
CY2012Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	33349000	USD
CY2012Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	200496000	USD
CY2012Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	11527000	USD
CY2012	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	213957000	USD
CY2012	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	2269000	USD
CY2013Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	212637000	USD
CY2013Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	110004000	USD
CY2013Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	73473000	USD
CY2013Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	183477000	USD
CY2013Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	24143000	USD
CY2013	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	185440000	USD
CY2013	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	2319000	USD
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	216523000	USD
CY2012Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	234535000	USD
CY2013Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	249675000	USD
CY2012	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	65184000	USD
CY2013	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	22364000	USD
CY2012	ewbc	Financing Receivable Allowance For Credit Losses Allowance For Unfunded Loan Commitments And Letters Of Credit FinancingReceivableAllowanceForCreditLossesAllowanceForUnfundedLoanCommitmentsAndLettersOfCredit	1563000	USD
CY2013	ewbc	Financing Receivable Allowance For Credit Losses Allowance For Unfunded Loan Commitments And Letters Of Credit FinancingReceivableAllowanceForCreditLossesAllowanceForUnfundedLoanCommitmentsAndLettersOfCredit	-2157000	USD
CY2012	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	64912000	USD
CY2013	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	17780000	USD
CY2012	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	16177000	USD
CY2013	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	12713000	USD
CY2012	ewbc	Provision For Loan And Lease Losses Net ProvisionForLoanAndLeaseLossesNet	48735000	USD
CY2013	ewbc	Provision For Loan And Lease Losses Net ProvisionForLoanAndLeaseLossesNet	5067000	USD
CY2012Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	11527000	USD
CY2013Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	24143000	USD
CY2012Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	223008000	USD
CY2013Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	223263000	USD
CY2012Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	200496000	USD
CY2013Q4	us-gaap	Financing Receivable Acquired With Deteriorated Credit Quality FinancingReceivableAcquiredWithDeterioratedCreditQuality	-2269000	USD
CY2012Q4	ewbc	Covered Loans Collectively Evaluated For Impairment CoveredLoansCollectivelyEvaluatedForImpairment	5237000	USD
CY2013Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	183477000	USD
CY2012Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	12184825000	USD
CY2013Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	15812201000	USD
CY2012Q4	ewbc	Covered Loans Acquired With Deteriorated Credit Quality CoveredLoansAcquiredWithDeterioratedCreditQuality	3019271000	USD
CY2013Q4	ewbc	Covered Loans Acquired With Deteriorated Credit Quality CoveredLoansAcquiredWithDeterioratedCreditQuality	2141375000	USD
CY2012Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	15409829000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	18139877000	USD
CY2012Q4	ewbc	Allowance For Unfunded Loan Commitments And Off Balance Sheet Credit Exposures And Recourse Provision AllowanceForUnfundedLoanCommitmentsAndOffBalanceSheetCreditExposuresAndRecourseProvision	9400000	USD
CY2013Q4	ewbc	Allowance For Unfunded Loan Commitments And Off Balance Sheet Credit Exposures And Recourse Provision AllowanceForUnfundedLoanCommitmentsAndOffBalanceSheetCreditExposuresAndRecourseProvision	11300000	USD
CY2012Q4	us-gaap	Qualitative And Quantitative Information Asset Or Liability Transferors Continuing Involvement Securitization Or Assetbacked Financing Principal Amount Outstanding Derecognized Amount QualitativeAndQuantitativeInformationAssetOrLiabilityTransferorsContinuingInvolvementSecuritizationOrAssetbackedFinancingPrincipalAmountOutstandingDerecognizedAmount	1650000000	USD
CY2013Q4	us-gaap	Qualitative And Quantitative Information Asset Or Liability Transferors Continuing Involvement Securitization Or Assetbacked Financing Principal Amount Outstanding Derecognized Amount QualitativeAndQuantitativeInformationAssetOrLiabilityTransferorsContinuingInvolvementSecuritizationOrAssetbackedFinancingPrincipalAmountOutstandingDerecognizedAmount	1350000000	USD
CY2012Q4	ewbc	Portion Of Allowance For Unfunded Loan Commitments Off Balance Sheet Credit Exposures And Recourse Provisions Related To Off Balance Sheet Loans Sold And Securitized PortionOfAllowanceForUnfundedLoanCommitmentsOffBalanceSheetCreditExposuresAndRecourseProvisionsRelatedToOffBalanceSheetLoansSoldAndSecuritized	4800000	USD
CY2013Q4	ewbc	Portion Of Allowance For Unfunded Loan Commitments Off Balance Sheet Credit Exposures And Recourse Provisions Related To Off Balance Sheet Loans Sold And Securitized PortionOfAllowanceForUnfundedLoanCommitmentsOffBalanceSheetCreditExposuresAndRecourseProvisionsRelatedToOffBalanceSheetLoansSoldAndSecuritized	3200000	USD
CY2013Q4	ewbc	Core Deposits CoreDeposits	14588570000	USD
CY2013Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	1678850000	USD
CY2013Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	4145498000	USD
CY2013Q4	us-gaap	Time Deposits TimeDeposits	5824348000	USD
CY2013Q4	us-gaap	Deposits Deposits	20412918000	USD
CY2012Q4	us-gaap	Time Deposits100000 Or More Foreign TimeDeposits100000OrMoreForeign	319300000	USD
CY2013Q4	us-gaap	Time Deposits100000 Or More Foreign TimeDeposits100000OrMoreForeign	169700000	USD
CY2013Q4	ewbc	Time Deposits100000 Or More Maturities Year One TimeDeposits100000OrMoreMaturitiesYearOne	3178469000	USD
CY2013Q4	ewbc	Time Deposits100000 Or More Maturities Year Two TimeDeposits100000OrMoreMaturitiesYearTwo	370754000	USD
CY2013Q4	ewbc	Time Deposits100000 Or More Maturities Year Three TimeDeposits100000OrMoreMaturitiesYearThree	129854000	USD
CY2013Q4	ewbc	Time Deposits100000 Or More Maturities Year Four TimeDeposits100000OrMoreMaturitiesYearFour	183622000	USD
CY2013Q4	ewbc	Time Deposits100000 Or More Maturities Year Five TimeDeposits100000OrMoreMaturitiesYearFive	165284000	USD
CY2013Q4	ewbc	Time Deposits100000 Or More Maturities After Year Five TimeDeposits100000OrMoreMaturitiesAfterYearFive	117515000	USD
CY2013Q4	ewbc	Time Deposits Less Than100000 Maturities Year One TimeDepositsLessThan100000MaturitiesYearOne	1413205000	USD
CY2013Q4	ewbc	Time Deposits Less Than100000 Maturities Year Two TimeDepositsLessThan100000MaturitiesYearTwo	176714000	USD
CY2013Q4	ewbc	Time Deposits Less Than100000 Maturities Year Three TimeDepositsLessThan100000MaturitiesYearThree	21728000	USD
CY2013Q4	ewbc	Time Deposits Less Than100000 Maturities Year Four TimeDepositsLessThan100000MaturitiesYearFour	36468000	USD
CY2013Q4	ewbc	Time Deposits Less Than100000 Maturities Year Five TimeDepositsLessThan100000MaturitiesYearFive	30731000	USD
CY2013Q4	ewbc	Time Deposits Less Than100000 Maturities After Year Five TimeDepositsLessThan100000MaturitiesAfterYearFive	4000	USD
CY2013Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	4591674000	USD
CY2013Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	547468000	USD
CY2013Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	151582000	USD
CY2013Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	220090000	USD
CY2013Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	196015000	USD
CY2013Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	117519000	USD
CY2012Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	4700000	USD
CY2012	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	2795000	USD
CY2011	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	29329000	USD
CY2012	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	20655000	USD
CY2013Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	5200000	USD
CY2011	ewbc	Interest Expense Interest Bearing Deposit Checking InterestExpenseInterestBearingDepositChecking	3009000	USD
CY2012	ewbc	Interest Expense Interest Bearing Deposit Checking InterestExpenseInterestBearingDepositChecking	3163000	USD
CY2011	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	20610000	USD
CY2012	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	16984000	USD
CY2011	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	2988000	USD
CY2011	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	51174000	USD
CY2012	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	32298000	USD
CY2011	us-gaap	Interest Expense Deposits InterestExpenseDeposits	107110000	USD
CY2012	us-gaap	Interest Expense Deposits InterestExpenseDeposits	75895000	USD
CY2013	ewbc	Interest Expense Interest Bearing Deposit Checking InterestExpenseInterestBearingDepositChecking	3556000	USD
CY2013	us-gaap	Interest Expense Money Market Deposits InterestExpenseMoneyMarketDeposits	15019000	USD
CY2013	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	2961000	USD
CY2013	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	15485000	USD
CY2013	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	26475000	USD
CY2013	us-gaap	Interest Expense Deposits InterestExpenseDeposits	63496000	USD
CY2012Q4	ewbc	Time Deposits Within Certificate Of Deposit Account Registry Service Program TimeDepositsWithinCertificateOfDepositAccountRegistryServiceProgram	260500000	USD
CY2013Q4	ewbc	Time Deposits Within Certificate Of Deposit Account Registry Service Program TimeDepositsWithinCertificateOfDepositAccountRegistryServiceProgram	203300000	USD
CY2013	ewbc	Number Of Statutory Business Trusts Formed For Issuing Debt To Third Party Investors NumberOfStatutoryBusinessTrustsFormedForIssuingDebtToThirdPartyInvestors	6	item
CY2013Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	123000000	USD
CY2012Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	133000000	USD
CY2013Q4	us-gaap	Common Stock Held In Trust CommonStockHeldInTrust	3900000	USD
CY2012Q4	us-gaap	Common Stock Held In Trust CommonStockHeldInTrust	4200000	USD
CY2013Q4	ewbc	Minimum Total Consolidated Assets For Exclusion Of Trust Preferred Securities As Tier I Regulatory Capital MinimumTotalConsolidatedAssetsForExclusionOfTrustPreferredSecuritiesAsTierIRegulatoryCapital	15000000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-27833000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	193834000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-32963000	USD
CY2012Q4	ewbc	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses And Reo Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLossesAndREOReserves	111985000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	23475000	USD
CY2012Q4	ewbc	Deferred Tax Assets Purchased Loan Premium DeferredTaxAssetsPurchasedLoanPremium	624000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	60383000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	698000	USD
CY2012Q4	ewbc	Deferred Tax Assets Acquired Loans And Re Os DeferredTaxAssetsAcquiredLoansAndREOs	516578000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	337438000	USD
CY2013Q4	ewbc	Market Capitalization MarketCapitalization	4810000000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	2364225000	USD
CY2013	ewbc	Fair Value Of Reporting Units Under Income Approach Net Income Projection Period FairValueOfReportingUnitsUnderIncomeApproachNetIncomeProjectionPeriod	P3Y
CY2011Q4	us-gaap	Goodwill Goodwill	337438000	USD
CY2013	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	item
CY2012Q4	ewbc	Federal Home Loan Bank Advances Modified FederalHomeLoanBankAdvancesModified	375000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	7543000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	6634000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	5722000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	4908000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	13659000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	46920000	USD
CY2012Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	4535877000	USD
CY2012Q4	ewbc	Interest Bearing Deposit Checking InterestBearingDepositChecking	1230372000	USD
CY2012Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	5000309000	USD
CY2012Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1421182000	USD
CY2012Q4	ewbc	Core Deposits CoreDeposits	12187740000	USD
CY2012Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	1884577000	USD
CY2012Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	4237037000	USD
CY2012Q4	us-gaap	Time Deposits TimeDeposits	6121614000	USD
CY2012Q4	us-gaap	Deposits Deposits	18309354000	USD
CY2013Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	5821899000	USD
CY2013Q4	ewbc	Interest Bearing Deposit Checking InterestBearingDepositChecking	1749479000	USD
CY2013Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	5383759000	USD
CY2013Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1633433000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	12295000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	726038000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	372000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	185713000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	20257000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	20558000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	21490000	USD
CY2012Q4	ewbc	Deferred Tax Liabilities Federal Home Loan Bank Stock DeferredTaxLiabilitiesFederalHomeLoanBankStock	26810000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	3242000	USD
CY2012Q4	ewbc	Deferred Tax Liabilities Purchased Loan Discounts DeferredTaxLiabilitiesPurchasedLoanDiscounts	162000	USD
CY2012Q4	ewbc	Deferred Tax Liabilities State Taxes DeferredTaxLiabilitiesStateTaxes	7894000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	2329000	USD
CY2012Q4	ewbc	Deferred Tax Liabilities Section597 Gain DeferredTaxLiabilitiesSection597Gain	96915000	USD
CY2012Q4	ewbc	Deferred Tax Liabilities Fdic Receivable DeferredTaxLiabilitiesFDICReceivable	328146000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	12173000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	-23000	USD
CY2012Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	539953000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	21064000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	15888000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	19473000	USD
CY2013	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	7295000	USD
CY2013Q4	ewbc	Deferred Tax Liabilities Federal Home Loan Bank Stock DeferredTaxLiabilitiesFederalHomeLoanBankStock	14561000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	2533000	USD
CY2013Q4	ewbc	Deferred Tax Liabilities Purchased Loan Discounts DeferredTaxLiabilitiesPurchasedLoanDiscounts	126000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-35128000	USD
CY2013Q4	ewbc	Deferred Tax Liabilities State Taxes DeferredTaxLiabilitiesStateTaxes	1079000	USD
CY2013	ewbc	Amount Of Dilutive Securities Convertible Preferred Stock AmountOfDilutiveSecuritiesConvertiblePreferredStock	3428000	USD
CY2013Q4	ewbc	Deferred Tax Liabilities Section597 Gain DeferredTaxLiabilitiesSection597Gain	49687000	USD
CY2013Q4	ewbc	Deferred Tax Liabilities Fdic Receivable DeferredTaxLiabilitiesFDICReceivable	252602000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	11854000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	5882000	USD
CY2013Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	394749000	USD
CY2013Q4	ewbc	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses And Reo Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLossesAndREOReserves	116064000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	17146000	USD
CY2013Q4	ewbc	Deferred Tax Assets Purchased Loan Premium DeferredTaxAssetsPurchasedLoanPremium	544000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	81712000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	993000	USD
CY2013Q4	ewbc	Deferred Tax Assets Acquired Loans And Re Os DeferredTaxAssetsAcquiredLoansAndREOs	394208000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	39581000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	650616000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	337000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	-97110000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3332000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3457000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4677000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	232000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	988000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1060000	USD
CY2012	ewbc	Unrecognized Tax Benefits Increases Or Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreasesOrDecreasesResultingFromSettlementsWithTaxingAuthorities	-935000	USD
CY2012	ewbc	Increase In Unrecognized Tax Benefits Reserve For Enterprise Zone Net Interest Deduction IncreaseInUnrecognizedTaxBenefitsReserveForEnterpriseZoneNetInterestDeduction	1100000	USD
CY2013	ewbc	Increase In Unrecognized Tax Benefits Reserve For Enterprise Zone Net Interest Deduction IncreaseInUnrecognizedTaxBenefitsReserveForEnterpriseZoneNetInterestDeduction	1200000	USD
CY2012Q4	ewbc	Accounting For Uncertainty In Income Taxes Asc74010 Liability AccountingForUncertaintyInIncomeTaxesASC74010Liability	6100000	USD
CY2013Q4	ewbc	Accounting For Uncertainty In Income Taxes Asc74010 Liability AccountingForUncertaintyInIncomeTaxesASC74010Liability	6300000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2200000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1200000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	287000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	-744000	USD
CY2012Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	2700000	USD
CY2013Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	1600000	USD
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	25800000	USD
CY2011	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	22800000	USD
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	26200000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	23356000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	19492000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	14566000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	10891000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	8096000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	21400000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	97801000	USD
CY2012	us-gaap	Investment Tax Credit InvestmentTaxCredit	18700000	USD
CY2011	us-gaap	Investment Tax Credit InvestmentTaxCredit	11100000	USD
CY2013Q4	ewbc	Investment In Affordable Housing Partnerships Remaining Tax Credits And Other Investments InvestmentInAffordableHousingPartnershipsRemainingTaxCreditsAndOtherInvestments	165700000	USD
CY2012	ewbc	Amortization Of Investments In Affordable Housing And Other Investments AmortizationOfInvestmentsInAffordableHousingAndOtherInvestments	18100000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13500000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12700000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13500000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	7300000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	7900000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	7900000	USD
CY2012Q4	ewbc	Tax Exempt Bonds TaxExemptBonds	547000	USD
CY2013Q4	ewbc	Tax Exempt Bonds TaxExemptBonds	948000	USD
CY2012	ewbc	Number Of Equity Method Investments NumberOfEquityMethodInvestments	35	item
CY2013	ewbc	Number Of Equity Method Investments NumberOfEquityMethodInvestments	35	item
CY2012	ewbc	Number Of Cost Method Investments NumberOfCostMethodInvestments	16	item
CY2013	ewbc	Number Of Cost Method Investments NumberOfCostMethodInvestments	13	item
CY2012	ewbc	Number Of Investments In Affordable Housing Partnerships NumberOfInvestmentsInAffordableHousingPartnerships	51	item
CY2013	ewbc	Number Of Investments In Affordable Housing Partnerships NumberOfInvestmentsInAffordableHousingPartnerships	48	item
CY2012Q4	ewbc	Investments In Affordable Housing Partnerships Other InvestmentsInAffordableHousingPartnershipsOther	45900000	USD
CY2013Q4	ewbc	Investments In Affordable Housing Partnerships Other InvestmentsInAffordableHousingPartnershipsOther	69200000	USD
CY2012Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	84600000	USD
CY2013Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	73100000	USD
CY2011	ewbc	Amortization Of Investments In Affordable Housing And Other Investments AmortizationOfInvestmentsInAffordableHousingAndOtherInvestments	17300000	USD
CY2013	ewbc	Amortization Of Investments In Affordable Housing And Other Investments AmortizationOfInvestmentsInAffordableHousingAndOtherInvestments	27300000	USD
CY2013	ewbc	Investment In Affordable Housing Partnerships Impairment Charge And Other Investments InvestmentInAffordableHousingPartnershipsImpairmentChargeAndOtherInvestments	0	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	171720000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	247478000	USD
CY2012	ewbc	Investment In Affordable Housing Partnerships Impairment Charge And Other Investments InvestmentInAffordableHousingPartnershipsImpairmentChargeAndOtherInvestments	0	USD
CY2013Q4	ewbc	Investment In Affordable Housing Partnerships Sold And Other Investments InvestmentInAffordableHousingPartnershipsSoldAndOtherInvestments	0	USD
CY2012Q4	ewbc	Federal Home Loan Bank Advances Maturities Summary Due After Four Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterFourYearsOfBalanceSheetDate	312975000	USD
CY2012Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	312975000	USD
CY2012Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Weighted Average Interest Rate FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresWeightedAverageInterestRate	0.0063	pure
CY2012Q4	ewbc	Federal Home Loan Bank Advances Maturities Average Interest Rate After Four Years From Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesAverageInterestRateAfterFourYearsFromBalanceSheetDate	0.0063	pure
CY2013Q4	ewbc	Federal Home Loan Bank Advances Maturities Summary Due After Four Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterFourYearsOfBalanceSheetDate	315092000	USD
CY2013Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	315092000	USD
CY2013Q4	ewbc	Federal Home Loan Bank Advances Maturities Average Interest Rate After Four Years From Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesAverageInterestRateAfterFourYearsFromBalanceSheetDate	0.0061	pure
CY2013Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Weighted Average Interest Rate FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresWeightedAverageInterestRate	0.0061	pure
CY2012Q1	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	1621000	USD
CY2012Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	3250000000	USD
CY2013Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	3700000000	USD
CY2012	us-gaap	Early Repayment Of Senior Debt EarlyRepaymentOfSeniorDebt	93000000	USD
CY2013	us-gaap	Early Repayment Of Senior Debt EarlyRepaymentOfSeniorDebt	0	USD
CY2012Q4	ewbc	Federal Home Loan Bank Advances Additional Available Borrowing Capacity FederalHomeLoanBankAdvancesAdditionalAvailableBorrowingCapacity	1310000000	USD
CY2013Q4	ewbc	Federal Home Loan Bank Advances Additional Available Borrowing Capacity FederalHomeLoanBankAdvancesAdditionalAvailableBorrowingCapacity	1420000000	USD
CY2012	ewbc	Federal Home Loan Bank Advances Additional Prepayment Penalties FederalHomeLoanBankAdvancesAdditionalPrepaymentPenalties	6800000	USD
CY2012Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	995000000	USD
CY2013Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	995000000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	64203000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	69768000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	177710000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	107517000	USD
CY2012	us-gaap	Depreciation Depreciation	13200000	USD
CY2011	us-gaap	Depreciation Depreciation	12100000	USD
CY2013	us-gaap	Depreciation Depreciation	13400000	USD
CY2012	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	462000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	255530000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	148572000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-86157000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	34760000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2316000	USD
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	5704000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	156592000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-51397000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-7706000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	26099000	USD
CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	3369000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	189497000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-12650000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	143942000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	138100000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	131236000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	44389000	USD
CY2013	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	208000	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	175833000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-13677000	USD
CY2013	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1612000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-45028000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	130805000	USD
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.043	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.043	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.053	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.027	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.006	pure
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.338	pure
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.360	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.047	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.084	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.006	pure
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.307	pure
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-38749000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	4160200	shares
CY2013	ewbc	Proceeds From Sale Of Non Covered Other Real Estate Owned ProceedsFromSaleOfNonCoveredOtherRealEstateOwned	25500000	USD
CY2012Q4	ewbc	Noncovered Real Estate Acquired Through Foreclosure NoncoveredRealEstateAcquiredThroughForeclosure	40600000	USD
CY2013Q4	ewbc	Noncovered Real Estate Acquired Through Foreclosure NoncoveredRealEstateAcquiredThroughForeclosure	9400000	USD
CY2013Q4	ewbc	Other Real Estate Owned Net OtherRealEstateOwnedNet	18900000	USD
CY2012Q4	ewbc	Other Real Estate Owned Net OtherRealEstateOwnedNet	32911000	USD
CY2012	ewbc	Write Downs Recorded Related To Real Estate Acquired Through Foreclosure WriteDownsRecordedRelatedToRealEstateAcquiredThroughForeclosure	5100000	USD
CY2013	ewbc	Write Downs Recorded Related To Real Estate Acquired Through Foreclosure WriteDownsRecordedRelatedToRealEstateAcquiredThroughForeclosure	1400000	USD
CY2012	ewbc	Number Of Other Real Estate Owned Properties Sold NumberOfOtherRealEstateOwnedPropertiesSold	47	item
CY2013	ewbc	Number Of Other Real Estate Owned Properties Sold NumberOfOtherRealEstateOwnedPropertiesSold	35	item
CY2011	ewbc	Number Of Other Real Estate Owned Properties Sold NumberOfOtherRealEstateOwnedPropertiesSold	51	item
CY2012	ewbc	Proceeds From Sale Of Non Covered Other Real Estate Owned ProceedsFromSaleOfNonCoveredOtherRealEstateOwned	34100000	USD
CY2011	ewbc	Proceeds From Sale Of Non Covered Other Real Estate Owned ProceedsFromSaleOfNonCoveredOtherRealEstateOwned	26600000	USD
CY2012	ewbc	Gains Losses On Sales Of Other Real Estate Noncovered GainsLossesOnSalesOfOtherRealEstateNoncovered	232000	USD
CY2011	ewbc	Gains Losses On Sales Of Other Real Estate Noncovered GainsLossesOnSalesOfOtherRealEstateNoncovered	-151000	USD
CY2013	ewbc	Gains Losses On Sales Of Other Real Estate Noncovered GainsLossesOnSalesOfOtherRealEstateNoncovered	3500000	USD
CY2012	ewbc	Recoveries From Sale Of Non Covered Other Real Estate Owned RecoveriesFromSaleOfNonCoveredOtherRealEstateOwned	2000000	USD
CY2011	ewbc	Non Covered Other Real Estate Owned Charges Against Allowance For Loan Losses NonCoveredOtherRealEstateOwnedChargesAgainstAllowanceForLoanLosses	780000	USD
CY2013Q4	ewbc	Investment In Affordable Housing Partnerships InvestmentInAffordableHousingPartnerships	165724000	USD
CY2013	ewbc	Minimum Compliance Period To Fully Utilize Tax Credits MinimumCompliancePeriodToFullyUtilizeTaxCredits	P15Y
CY2012Q4	ewbc	Investments In Affordable Housing Partnerships Amount InvestmentsInAffordableHousingPartnershipsAmount	185600000	USD
CY2013Q4	ewbc	Investments In Affordable Housing Partnerships Amount InvestmentsInAffordableHousingPartnershipsAmount	165700000	USD
CY2012Q4	us-gaap	Equity Method Investments EquityMethodInvestments	142507000	USD
CY2013Q4	us-gaap	Equity Method Investments EquityMethodInvestments	129631000	USD
CY2012Q4	us-gaap	Cost Method Investments CostMethodInvestments	42591000	USD
CY2013Q4	us-gaap	Cost Method Investments CostMethodInvestments	35145000	USD
CY2012Q4	ewbc	Aggregate Tax Credit Partnerships AggregateTaxCreditPartnerships	185098000	USD
CY2013Q4	ewbc	Aggregate Tax Credit Partnerships AggregateTaxCreditPartnerships	164776000	USD
CY2013Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	187000	USD
CY2012	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	3500000	USD
CY2011	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	3000000	USD
CY2013	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	4300000	USD
CY2012	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	9068105	shares
CY2012	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	22.02
CY2012Q4	ewbc	Cost Of Repurchase Of Treasury Shares CostOfRepurchaseOfTreasuryShares	199900000	USD
CY2012	ewbc	Other Asset Investments Change In Net Unrealized Holding Gain Loss Tax OtherAssetInvestmentsChangeInNetUnrealizedHoldingGainLossTax	-22000	USD
CY2011	ewbc	Other Asset Investments Change In Net Unrealized Holding Gain Loss Tax OtherAssetInvestmentsChangeInNetUnrealizedHoldingGainLossTax	-140000	USD
CY2012	ewbc	Other Comprehensive Income Loss Reclassification Adjustment For Other Asset Investments Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForOtherAssetInvestmentsIncludedInNetIncomeTax	10000	USD
CY2011	ewbc	Other Comprehensive Income Loss Reclassification Adjustment For Other Asset Investments Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForOtherAssetInvestmentsIncludedInNetIncomeTax	26000	USD
CY2013	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	8026807	shares
CY2013	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	24.89
CY2013Q4	ewbc	Cost Of Repurchase Of Treasury Shares CostOfRepurchaseOfTreasuryShares	200000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-33940000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-12414000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	4669000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-30459000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	38609000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-21526000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	73910000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-21264000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	757000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	9703000	USD
CY2012	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	73153000	USD
CY2011	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-30967000	USD
CY2012	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParentAvailableforsaleSecurities	5066000	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParentAvailableforsaleSecurities	5103000	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	-1552000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	-1317000	USD
CY2012	ewbc	Other Asset Investments Change In Net Unrealized Holding Gain Loss Before Tax OtherAssetInvestmentsChangeInNetUnrealizedHoldingGainLossBeforeTax	53000	USD
CY2011	ewbc	Other Asset Investments Change In Net Unrealized Holding Gain Loss Before Tax OtherAssetInvestmentsChangeInNetUnrealizedHoldingGainLossBeforeTax	334000	USD
CY2012	ewbc	Other Comprehensive Income Loss Reclassification Adjustment For Other Asset Investments Included In Net Income Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForOtherAssetInvestmentsIncludedInNetIncomeBeforeTax	-23000	USD
CY2011	ewbc	Other Comprehensive Income Loss Reclassification Adjustment For Other Asset Investments Included In Net Income Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForOtherAssetInvestmentsIncludedInNetIncomeBeforeTax	-61000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	66565000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-37114000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-31042000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	8931000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-318000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-4075000	USD
CY2011	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	13006000	USD
CY2012	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxPortionAttributableToParentAvailableforsaleSecurities	-2128000	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxPortionAttributableToParentAvailableforsaleSecurities	-2143000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	553000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-27956000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	15588000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	42868000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-12333000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	439000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	5628000	USD
CY2012	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	42429000	USD
CY2011	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-17961000	USD
CY2012	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	2938000	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	2960000	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-900000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-764000	USD
CY2012	ewbc	Other Asset Investments Change In Net Unrealized Holding Gain Loss Net Of Tax OtherAssetInvestmentsChangeInNetUnrealizedHoldingGainLossNetOfTax	31000	USD
CY2011	ewbc	Other Asset Investments Change In Net Unrealized Holding Gain Loss Net Of Tax OtherAssetInvestmentsChangeInNetUnrealizedHoldingGainLossNetOfTax	194000	USD
CY2012	ewbc	Other Comprehensive Income Loss Reclassification Adjustment For Other Asset Investments Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForOtherAssetInvestmentsIncludedInNetIncomeNetOfTax	-13000	USD
CY2011	ewbc	Other Comprehensive Income Loss Reclassification Adjustment For Other Asset Investments Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForOtherAssetInvestmentsIncludedInNetIncomeNetOfTax	-35000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	38609000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-21526000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-48567000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	12089000	USD
CY2013	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-60656000	USD
CY2013	ewbc	Other Asset Investments Change In Net Unrealized Holding Gain Loss Before Tax OtherAssetInvestmentsChangeInNetUnrealizedHoldingGainLossBeforeTax	579000	USD
CY2013	ewbc	Other Comprehensive Income Loss Reclassification Adjustment For Other Asset Investments Included In Net Income Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForOtherAssetInvestmentsIncludedInNetIncomeBeforeTax	-488000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-60565000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	20398000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-5077000	USD
CY2013	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	25475000	USD
CY2013	ewbc	Other Asset Investments Change In Net Unrealized Holding Gain Loss Tax OtherAssetInvestmentsChangeInNetUnrealizedHoldingGainLossTax	-243000	USD
CY2013	ewbc	Other Comprehensive Income Loss Reclassification Adjustment For Other Asset Investments Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForOtherAssetInvestmentsIncludedInNetIncomeTax	205000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	25437000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-28169000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	7012000	USD
CY2013	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-35181000	USD
CY2013	ewbc	Other Asset Investments Change In Net Unrealized Holding Gain Loss Net Of Tax OtherAssetInvestmentsChangeInNetUnrealizedHoldingGainLossNetOfTax	336000	USD
CY2013	ewbc	Other Comprehensive Income Loss Reclassification Adjustment For Other Asset Investments Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForOtherAssetInvestmentsIncludedInNetIncomeNetOfTax	-283000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-35128000	USD
CY2012	us-gaap	Income Loss Before Extraordinary Items And Cumulative Effect Of Change In Accounting Principle IncomeLossBeforeExtraordinaryItemsAndCumulativeEffectOfChangeInAccountingPrinciple	281650000	USD
CY2013	ewbc	Other Investments Change In Net Unrealized Holding Gain Loss Net Of Tax OtherInvestmentsChangeInNetUnrealizedHoldingGainLossNetOfTax	336000	USD
CY2011	us-gaap	Income Loss Before Extraordinary Items And Cumulative Effect Of Change In Accounting Principle IncomeLossBeforeExtraordinaryItemsAndCumulativeEffectOfChangeInAccountingPrinciple	245234000	USD
CY2012	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	6857000	USD
CY2011	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	6857000	USD
CY2012	us-gaap	Participating Securities Distributed And Undistributed Earnings ParticipatingSecuritiesDistributedAndUndistributedEarnings	3279000	USD
CY2012	ewbc	Net Income Loss Available To Common Stockholders Basic After Participating Securities NetIncomeLossAvailableToCommonStockholdersBasicAfterParticipatingSecurities	271514000	USD
CY2011	ewbc	Net Income Loss Available To Common Stockholders Basic After Participating Securities NetIncomeLossAvailableToCommonStockholdersBasicAfterParticipatingSecurities	238377000	USD
CY2012	ewbc	Amount Of Dilutive Securities Restrictive Stock Awards AmountOfDilutiveSecuritiesRestrictiveStockAwards	47000	USD
CY2011	ewbc	Amount Of Dilutive Securities Restrictive Stock Awards AmountOfDilutiveSecuritiesRestrictiveStockAwards	115000	USD
CY2012	ewbc	Amount Of Dilutive Securities Convertible Preferred Stock AmountOfDilutiveSecuritiesConvertiblePreferredStock	6857000	USD
CY2011	ewbc	Amount Of Dilutive Securities Convertible Preferred Stock AmountOfDilutiveSecuritiesConvertiblePreferredStock	6857000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	278418000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	245349000	USD
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	141457000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147093000	shares
CY2012	ewbc	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	29000	shares
CY2011	ewbc	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	62000	shares
CY2012	ewbc	Incremental Common Shares Attributable To Share Based Payment Arrangements Restricted Stock IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsRestrictedStock	118000	shares
CY2011	ewbc	Incremental Common Shares Attributable To Share Based Payment Arrangements Restricted Stock IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsRestrictedStock	718000	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	5571000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	5571000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	23000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	147175000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	153467000	shares
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.92
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.62
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.89
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.60
CY2013	us-gaap	Income Loss Before Extraordinary Items And Cumulative Effect Of Change In Accounting Principle IncomeLossBeforeExtraordinaryItemsAndCumulativeEffectOfChangeInAccountingPrinciple	295045000	USD
CY2013	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	3428000	USD
CY2013	us-gaap	Participating Securities Distributed And Undistributed Earnings ParticipatingSecuritiesDistributedAndUndistributedEarnings	1692000	USD
CY2013	ewbc	Net Income Loss Available To Common Stockholders Basic After Participating Securities NetIncomeLossAvailableToCommonStockholdersBasicAfterParticipatingSecurities	289925000	USD
CY2013	ewbc	Amount Of Dilutive Securities Restrictive Stock Awards AmountOfDilutiveSecuritiesRestrictiveStockAwards	196000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	293549000	USD
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	137342000	shares
CY2013Q4	us-gaap	Goodwill Goodwill	337438000	USD
CY2013	ewbc	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	71000	shares
CY2013	ewbc	Incremental Common Shares Attributable To Share Based Payment Arrangements Restricted Stock IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsRestrictedStock	327000	shares
CY2013	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	1834000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	139574000	shares
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.11
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.10
CY2012Q4	us-gaap	Capital Capital	2296253000	USD
CY2012Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	2116757000	USD
CY2012Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.161	pure
CY2012Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	2116757000	USD
CY2012Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.148	pure
CY2012Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.096	pure
CY2012Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	1142743000	USD
CY2012Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	571371000	USD
CY2012Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	880526000	USD
CY2012Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.080	pure
CY2012Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.040	pure
CY2012Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.040	pure
CY2013Q4	us-gaap	Capital Capital	2395109000	USD
CY2013Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	2102476000	USD
CY2013Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	2102476000	USD
CY2013Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.135	pure
CY2013Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.119	pure
CY2013Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.086	pure
CY2013Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	1416203000	USD
CY2013Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	708102000	USD
CY2013Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	976596000	USD
CY2013Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.080	pure
CY2013Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.040	pure
CY2013Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.040	pure
CY2012	ewbc	Trust Preferred Securities As Percentage Of Tier I Capital TrustPreferredSecuritiesAsPercentageOfTierICapital	0.063	pure
CY2013	ewbc	Trust Preferred Securities As Percentage Of Tier I Capital TrustPreferredSecuritiesAsPercentageOfTierICapital	0.044	pure
CY2012	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1051095000	USD
CY2011	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1080448000	USD
CY2011	ewbc	Charge For Funds Used ChargeForFundsUsed	232464000	USD
CY2012	ewbc	Charge For Funds Used ChargeForFundsUsed	160092000	USD
CY2013	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	4173000	USD
CY2011	ewbc	Interest Spread On Funds Used InterestSpreadOnFundsUsed	847984000	USD
CY2012	ewbc	Interest Spread On Funds Used InterestSpreadOnFundsUsed	891003000	USD
CY2011	us-gaap	Interest Expense InterestExpense	177422000	USD
CY2012	us-gaap	Interest Expense InterestExpense	132168000	USD
CY2012	ewbc	Credit On Funds Provided CreditOnFundsProvided	160092000	USD
CY2011	ewbc	Interest Spread On Funds Provided InterestSpreadOnFundsProvided	55042000	USD
CY2012	ewbc	Interest Spread On Funds Provided InterestSpreadOnFundsProvided	27924000	USD
CY2011	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	903026000	USD
CY2012	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	918927000	USD
CY2011	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	95006000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	-128254000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	-43751000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	383334000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	425592000	USD
CY2011Q4	us-gaap	Assets Assets	21968667000	USD
CY2012Q4	us-gaap	Assets Assets	22536110000	USD
CY2013	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1068685000	USD
CY2013	ewbc	Charge For Funds Used ChargeForFundsUsed	220957000	USD
CY2013	ewbc	Interest Spread On Funds Used InterestSpreadOnFundsUsed	847728000	USD
CY2013	us-gaap	Interest Expense InterestExpense	112492000	USD
CY2013	ewbc	Credit On Funds Provided CreditOnFundsProvided	220957000	USD
CY2013	ewbc	Interest Spread On Funds Provided InterestSpreadOnFundsProvided	108465000	USD
CY2013	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	956193000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	425850000	USD
CY2013Q4	us-gaap	Assets Assets	24730068000	USD
CY2012Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	254050000	USD
CY2012Q1	us-gaap	Interest Expense InterestExpense	35132000	USD
CY2012Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	218918000	USD
CY2012Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	16479000	USD
CY2012Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	200818000	USD
CY2012Q1	us-gaap	Noninterest Income NoninterestIncome	21740000	USD
CY2012Q1	us-gaap	Noninterest Expense NoninterestExpense	114763000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	107795000	USD
CY2012Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	39712000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	68083000	USD
CY2012Q1	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	1714000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	66369000	USD
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.46
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.45
CY2012Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	266362000	USD
CY2012Q2	us-gaap	Interest Expense InterestExpense	33205000	USD
CY2012Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	233157000	USD
CY2012Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	16595000	USD
CY2012Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	217657000	USD
CY2012Q2	us-gaap	Noninterest Income NoninterestIncome	-11655000	USD
CY2012Q2	us-gaap	Noninterest Expense NoninterestExpense	101608000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	104394000	USD
CY2012Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	33837000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	70557000	USD
CY2012Q2	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	1714000	USD
CY2012Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	68843000	USD
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.47
CY2013Q2	us-gaap	Noninterest Income NoninterestIncome	-12354000	USD
CY2013Q2	us-gaap	Noninterest Expense NoninterestExpense	94420000	USD
CY2012Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	254162000	USD
CY2012Q3	us-gaap	Interest Expense InterestExpense	32254000	USD
CY2012Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	221908000	USD
CY2012Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	13321000	USD
CY2012Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	203408000	USD
CY2012Q3	us-gaap	Noninterest Income NoninterestIncome	2751000	USD
CY2012Q3	us-gaap	Noninterest Expense NoninterestExpense	100956000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	105203000	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	34093000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	71110000	USD
CY2012Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	1714000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	69396000	USD
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2012Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	276521000	USD
CY2012Q4	us-gaap	Interest Expense InterestExpense	31577000	USD
CY2012Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	244944000	USD
CY2012Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	13773000	USD
CY2012Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	231860000	USD
CY2012Q4	us-gaap	Noninterest Income NoninterestIncome	-18454000	USD
CY2012Q4	us-gaap	Noninterest Expense NoninterestExpense	105206000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	108200000	USD
CY2012Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36300000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	71900000	USD
CY2012Q4	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	1715000	USD
CY2012Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	70185000	USD
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.50
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2013Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	238423000	USD
CY2013Q1	us-gaap	Interest Expense InterestExpense	29132000	USD
CY2013Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	209291000	USD
CY2013Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-762000	USD
CY2013Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	204964000	USD
CY2013Q1	us-gaap	Noninterest Income NoninterestIncome	-2099000	USD
CY2013Q1	us-gaap	Noninterest Expense NoninterestExpense	96355000	USD
CY2013Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	106510000	USD
CY2013Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	34419000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	72091000	USD
CY2013Q1	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	1714000	USD
CY2013Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	70377000	USD
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.50
CY2013Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	255353000	USD
CY2013Q2	us-gaap	Interest Expense InterestExpense	27709000	USD
CY2013Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	227644000	USD
CY2013Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	8277000	USD
CY2013Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	218644000	USD
CY2013Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	111870000	USD
CY2013Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37855000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	74015000	USD
CY2013Q2	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	1714000	USD
CY2013Q3	us-gaap	Interest Expense InterestExpense	27456000	USD
CY2013Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	72301000	USD
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2013Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	281706000	USD
CY2013Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	254250000	USD
CY2013Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4535000	USD
CY2013Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	250679000	USD
CY2013Q3	us-gaap	Noninterest Income NoninterestIncome	-41421000	USD
CY2013Q3	us-gaap	Noninterest Expense NoninterestExpense	100352000	USD
CY2013Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	108906000	USD
CY2013Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35749000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	73157000	USD
CY2013Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	73157000	USD
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.53
CY2013Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	293203000	USD
CY2013Q4	us-gaap	Interest Expense InterestExpense	28195000	USD
CY2013Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	265008000	USD
CY2013Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6286000	USD
CY2013Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	259542000	USD
CY2013Q4	us-gaap	Noninterest Income NoninterestIncome	-36594000	USD
CY2013Q4	us-gaap	Noninterest Expense NoninterestExpense	124384000	USD
CY2013Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	98564000	USD
CY2013Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22782000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	75782000	USD
CY2013Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	75782000	USD
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.55
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.55
CY2012Q4	ewbc	Securities Purchased Under Agreements To Resell Noncurrent SecuritiesPurchasedUnderAgreementsToResellNoncurrent	1450000000	USD
CY2012Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered	14645785000	USD
CY2012Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	59719000	USD
CY2012Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	107275000	USD
CY2012Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	48003000	USD
CY2012Q4	ewbc	Investment In Affordable Housing Partnerships InvestmentInAffordableHousingPartnerships	185645000	USD
CY2012Q4	us-gaap	Interest Receivable InterestReceivable	94837000	USD
CY2012Q4	us-gaap	Due From Customer Acceptances DueFromCustomerAcceptances	28612000	USD
CY2012Q4	ewbc	Finite Lived Core Deposits Net FiniteLivedCoreDepositsNet	56285000	USD
CY2012Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	110133000	USD
CY2012Q4	us-gaap	Other Assets OtherAssets	517718000	USD
CY2012Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	13773477000	USD
CY2012Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	995000000	USD
CY2012Q4	us-gaap	Other Borrowings OtherBorrowings	20000000	USD
CY2012Q4	us-gaap	Bank Acceptances Executed And Outstanding BankAcceptancesExecutedAndOutstanding	28612000	USD
CY2012Q4	ewbc	Accrued Interest Payable Accrued Expenses And Other Liabilities AccruedInterestPayableAccruedExpensesAndOtherLiabilities	350869000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	20153988000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue	83027000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	157000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1464739000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1151828000	USD
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	322298000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	2382122000	USD
CY2013Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	62330000	USD
CY2013Q4	us-gaap	Bank Acceptances Executed And Outstanding BankAcceptancesExecutedAndOutstanding	21236000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	22536110000	USD
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	157160193	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	140294092	shares
CY2012Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	16866101	shares
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	163098008	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	137630896	shares
CY2013Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	25467112	shares
CY2013	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	933829000	USD
CY2013	us-gaap	Noninterest Income NoninterestIncome	-92468000	USD
CY2013	us-gaap	Noninterest Expense NoninterestExpense	415511000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	291617000	USD
CY2012	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	945530000	USD
CY2012	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	58184000	USD
CY2012	ewbc	Investment In Federal Home Loan Bank Stock InvestmentInFederalHomeLoanBankStock	1808000	USD
CY2012	ewbc	Investment In Federal Reserve Bank Stock InvestmentInFederalReserveBankStock	2865000	USD
CY2012	ewbc	Short Term Investments As Presented In Statements Of Income ShortTermInvestmentsAsPresentedInStatementsOfIncome	22316000	USD
CY2012	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	6248000	USD
CY2012	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	46166000	USD
CY2012	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	3855000	USD
CY2012	ewbc	Other Borrowings Interest Expense OtherBorrowingsInterestExpense	4000	USD
CY2012	ewbc	Provision For Loan Lease And Other Losses Noncovered ProvisionForLoanLeaseAndOtherLossesNoncovered	60168000	USD
CY2012	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	5016000	USD
CY2012	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	853743000	USD
CY2012	ewbc	Decrease In Fdic Indemnification Asset Receivable DecreaseInFdicIndemnificationAssetReceivable	-122251000	USD
CY2012	ewbc	Branch Fees BranchFees	30906000	USD
CY2012	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	757000	USD
CY2012	us-gaap	Fees And Commissions Other FeesAndCommissionsOther	19104000	USD
CY2012	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	7166000	USD
CY2012	us-gaap	Servicing Fees Net ServicingFeesNet	8831000	USD
CY2012	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	4015000	USD
CY2012	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	17045000	USD
CY2013	ewbc	Branch Fees BranchFees	32036000	USD
CY2012	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	4275000	USD
CY2012	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	24633000	USD
CY2012	us-gaap	Noninterest Income NoninterestIncome	-5618000	USD
CY2012	us-gaap	Labor And Related Expense LaborAndRelatedExpense	171374000	USD
CY2012	us-gaap	Occupancy Net OccupancyNet	55475000	USD
CY2012	ewbc	Amortization Of Investments In Affordable Housing Partnerships AmortizationOfInvestmentsInAffordableHousingPartnerships	18058000	USD
CY2012	ewbc	Amortization And Impairment Write Downs Of Premiums On Deposits Acquired AmortizationAndImpairmentWriteDownsOfPremiumsOnDepositsAcquired	10906000	USD
CY2012	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	14130000	USD
CY2012	us-gaap	Loan Processing Fee LoanProcessingFee	14987000	USD
CY2012	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	22349000	USD
CY2012	us-gaap	Legal Fees LegalFees	25441000	USD
CY2012	ewbc	Prepayment Penalty For Fhlb Advances And Other Borrowings PrepaymentPenaltyForFhlbAdvancesAndOtherBorrowings	6860000	USD
CY2012	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	9231000	USD
CY2012	ewbc	Deposit Related Expenses DepositRelatedExpenses	6007000	USD
CY2012	us-gaap	Professional Fees ProfessionalFees	7984000	USD
CY2012	us-gaap	Other Noninterest Expense OtherNoninterestExpense	59731000	USD
CY2012	us-gaap	Noninterest Expense NoninterestExpense	422533000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	281650000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	274793000	USD
CY2011	ewbc	Prepayment Penalty For Fhlb Advances And Other Borrowings PrepaymentPenaltyForFhlbAdvancesAndOtherBorrowings	12281000	USD
CY2011	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	40435000	USD
CY2011	us-gaap	Legal Fees LegalFees	21327000	USD
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.16
CY2011	us-gaap	Labor And Related Expense LaborAndRelatedExpense	160093000	USD
CY2011	us-gaap	Occupancy Net OccupancyNet	50082000	USD
CY2011	ewbc	Amortization Of Investments In Affordable Housing Partnerships AmortizationOfInvestmentsInAffordableHousingPartnerships	17324000	USD
CY2011	ewbc	Amortization And Impairment Write Downs Of Premiums On Deposits Acquired AmortizationAndImpairmentWriteDownsOfPremiumsOnDepositsAcquired	12327000	USD
CY2011	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	20531000	USD
CY2011	us-gaap	Loan Processing Fee LoanProcessingFee	19379000	USD
CY2011	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	8598000	USD
CY2011	ewbc	Deposit Related Expenses DepositRelatedExpenses	5699000	USD
CY2011	us-gaap	Professional Fees ProfessionalFees	7151000	USD
CY2011	us-gaap	Other Noninterest Expense OtherNoninterestExpense	60383000	USD
CY2011	us-gaap	Noninterest Expense NoninterestExpense	435610000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	245234000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	238377000	USD
CY2013	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1316764000	USD
CY2011	ewbc	Decrease In Fdic Indemnification Asset Receivable DecreaseInFdicIndemnificationAssetReceivable	-100141000	USD
CY2011	ewbc	Branch Fees BranchFees	31510000	USD
CY2011	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	9703000	USD
CY2011	us-gaap	Fees And Commissions Other FeesAndCommissionsOther	13997000	USD
CY2013	us-gaap	Occupancy Net OccupancyNet	56641000	USD
CY2013	us-gaap	Legal Fees LegalFees	31718000	USD
CY2011	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	9143000	USD
CY2011	us-gaap	Servicing Fees Net ServicingFeesNet	8350000	USD
CY2011	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	4031000	USD
CY2011	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	20185000	USD
CY2011	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	2274000	USD
CY2011	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	12505000	USD
CY2011	us-gaap	Noninterest Income NoninterestIncome	10924000	USD
CY2011	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	15461000	USD
CY2011	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	48561000	USD
CY2011	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	5832000	USD
CY2011	ewbc	Other Borrowings Interest Expense OtherBorrowingsInterestExpense	458000	USD
CY2011	ewbc	Provision For Loan Lease And Other Losses Noncovered ProvisionForLoanLeaseAndOtherLossesNoncovered	92584000	USD
CY2011	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	2422000	USD
CY2011	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	808020000	USD
CY2011	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	945798000	USD
CY2011	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	89469000	USD
CY2011	ewbc	Investment In Federal Home Loan Bank Stock InvestmentInFederalHomeLoanBankStock	550000	USD
CY2011	ewbc	Investment In Federal Reserve Bank Stock InvestmentInFederalReserveBankStock	2840000	USD
CY2011	ewbc	Short Term Investments As Presented In Statements Of Income ShortTermInvestmentsAsPresentedInStatementsOfIncome	22575000	USD
CY2011	ewbc	Other Investments Change In Net Unrealized Holding Gain Loss Net Of Tax OtherInvestmentsChangeInNetUnrealizedHoldingGainLossNetOfTax	194000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	223708000	USD
CY2012	ewbc	Other Investments Change In Net Unrealized Holding Gain Loss Net Of Tax OtherInvestmentsChangeInNetUnrealizedHoldingGainLossNetOfTax	31000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	320259000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	259917000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	2113931000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	2311743000	USD
CY2012	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	99000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	13543000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	12668000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	13548000	USD
CY2011	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	717000	USD
CY2013	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	5522000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	5206000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	3821000	USD
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	3054000	USD
CY2012	ewbc	Stock Issued During Period Value Director Retainer Fee StockIssuedDuringPeriodValueDirectorRetainerFee	570000	USD
CY2011	ewbc	Stock Issued During Period Value Director Retainer Fee StockIssuedDuringPeriodValueDirectorRetainerFee	520000	USD
CY2013	ewbc	Stock Issued During Period Value Director Retainer Fee StockIssuedDuringPeriodValueDirectorRetainerFee	630000	USD
CY2013	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	13833000	USD
CY2012	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	3012000	USD
CY2011	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	649000	USD
CY2011	us-gaap	Dividends Preferred Stock DividendsPreferredStock	6857000	USD
CY2012	us-gaap	Dividends Preferred Stock DividendsPreferredStock	6857000	USD
CY2013	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3428000	USD
CY2011	us-gaap	Dividends Common Stock DividendsCommonStock	23876000	USD
CY2012	us-gaap	Dividends Common Stock DividendsCommonStock	57582000	USD
CY2013	us-gaap	Dividends Common Stock DividendsCommonStock	83315000	USD
CY2012	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	199950000	USD
CY2013	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	199992000	USD
CY2011	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	14500000	USD
CY2012	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	336031	shares
CY2011	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	1024925	shares
CY2013	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	323737	shares
CY2013	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	43846000	USD
CY2012	ewbc	Stock Issued During Period Shares Director Retainer Fee StockIssuedDuringPeriodSharesDirectorRetainerFee	26151	shares
CY2011	ewbc	Stock Issued During Period Shares Director Retainer Fee StockIssuedDuringPeriodSharesDirectorRetainerFee	27831	shares
CY2012	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	137258	shares
CY2011	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	29610	shares
CY2013	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	508518	shares
CY2013	ewbc	Stock Issued During Period Shares Director Retainer Fee StockIssuedDuringPeriodSharesDirectorRetainerFee	19998	shares
CY2013	ewbc	Short Term Investments As Presented In Statements Of Income ShortTermInvestmentsAsPresentedInStatementsOfIncome	17340000	USD
CY2012	us-gaap	Stock Issued During Period Shares Restricted Stock Award Forfeited StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited	190634	shares
CY2011	us-gaap	Stock Issued During Period Shares Restricted Stock Award Forfeited StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited	240193	shares
CY2013	us-gaap	Stock Issued During Period Shares Restricted Stock Award Forfeited StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited	65686	shares
CY2011	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1517555	shares
CY2011	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	67460000	USD
CY2012	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	82536000	USD
CY2011	ewbc	Accretion Amortization Of Discount And Premiums Loans And Other Assets AccretionAmortizationOfDiscountAndPremiumsLoansAndOtherAssets	210868000	USD
CY2012	ewbc	Accretion Amortization Of Discount And Premiums Loans And Other Assets AccretionAmortizationOfDiscountAndPremiumsLoansAndOtherAssets	233607000	USD
CY2011	ewbc	Decrease In Fdic Indemnification Asset And Receivable DecreaseInFdicIndemnificationAssetAndReceivable	-100141000	USD
CY2012	ewbc	Decrease In Fdic Indemnification Asset And Receivable DecreaseInFdicIndemnificationAssetAndReceivable	-122251000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	13543000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	13238000	USD
CY2011	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	29266000	USD
CY2012	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	16035000	USD
CY2011	ewbc	Net Gain On Sales Of Investment Securities Loans And Other Assets NetGainOnSalesOfInvestmentSecuritiesLoansAndOtherAssets	30998000	USD
CY2012	ewbc	Net Gain On Sales Of Investment Securities Loans And Other Assets NetGainOnSalesOfInvestmentSecuritiesLoansAndOtherAssets	28165000	USD
CY2011	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	72761000	USD
CY2012	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	103059000	USD
CY2011	ewbc	Proceeds From Sales Of Loans Originated As Loans Held For Sale ProceedsFromSalesOfLoansOriginatedAsLoansHeldForSale	41388000	USD
CY2012	ewbc	Proceeds From Sales Of Loans Originated As Loans Held For Sale ProceedsFromSalesOfLoansOriginatedAsLoansHeldForSale	13844000	USD
CY2011	ewbc	Net Proceeds From Fdic Shared Loss Agreements NetProceedsFromFdicSharedLossAgreements	159983000	USD
CY2012	ewbc	Net Proceeds From Fdic Shared Loss Agreements NetProceedsFromFdicSharedLossAgreements	76094000	USD
CY2011	ewbc	Net Change In Accrued Interest Receivable And Other Assets NetChangeInAccruedInterestReceivableAndOtherAssets	146911000	USD
CY2012	ewbc	Net Change In Accrued Interest Receivable And Other Assets NetChangeInAccruedInterestReceivableAndOtherAssets	23393000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-233868000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	15086000	USD
CY2011	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-2359000	USD
CY2012	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-3916000	USD
CY2011	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	10083000	USD
CY2012	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	5876000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	255317000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	287526000	USD
CY2013	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	2103564000	USD
CY2011	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	934773000	USD
CY2012	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	337685000	USD
CY2011	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	-81726000	USD
CY2012	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	304544000	USD
CY2011	us-gaap	Payments For Securities Purchased Under Agreements To Resell PaymentsForSecuritiesPurchasedUnderAgreementsToResell	1292066000	USD
CY2012	us-gaap	Payments For Securities Purchased Under Agreements To Resell PaymentsForSecuritiesPurchasedUnderAgreementsToResell	1400000000	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	2713546000	USD
CY2012	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1835823000	USD
CY2011	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	675298000	USD
CY2012	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	461878000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10507000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10280000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	14178000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	69581000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	88108000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	702616000	USD
CY2012	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	1230134000	USD
CY2011	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	188407000	USD
CY2012	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	76832000	USD
CY2011	ewbc	Loans Held For Sale Originated For Investment LoansHeldForSaleOriginatedForInvestment	611291000	USD
CY2012	ewbc	Loans Held For Sale Originated For Investment LoansHeldForSaleOriginatedForInvestment	338046000	USD
CY2011	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	177015000	USD
CY2012	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	100547000	USD
CY2011	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	9227000	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	18914000	USD
CY2011	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	2454000	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1780457000	USD
CY2012	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1119098000	USD
CY2011	ewbc	Proceeds From Paydown Maturities And Termination Of Securities Purchased Under Resale Agreements ProceedsFromPaydownMaturitiesAndTerminationOfSecuritiesPurchasedUnderResaleAgreements	1005632000	USD
CY2012	ewbc	Proceeds From Paydown Maturities And Termination Of Securities Purchased Under Resale Agreements ProceedsFromPaydownMaturitiesAndTerminationOfSecuritiesPurchasedUnderResaleAgreements	736434000	USD
CY2011	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-25908000	USD
CY2012	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-29622000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	227000	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	491000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-1071226000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-758905000	USD
CY2011	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1812375000	USD
CY2012	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	856352000	USD
CY2011	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-63337000	USD
CY2012	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-5208000	USD
CY2011	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	5726000	USD
CY2012	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3821000	USD
CY2011	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	760274000	USD
CY2012	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	100857000	USD
CY2012	ewbc	Modification Of Federal Home Loan Bank Advances ModificationOfFederalHomeLoanBankAdvances	48190000	USD
CY2011	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	23918000	USD
CY2012	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	75000000	USD
CY2011	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	11250000	USD
CY2011	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	14500000	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	199950000	USD
CY2011	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	30679000	USD
CY2012	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	64218000	USD
CY2013	us-gaap	Stock Issued1 StockIssued1	630000	USD
CY2013	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	259117000	USD
CY2013	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-44945000	USD
CY2013	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	10310000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	914211000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	364200000	USD
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations	-1066000	USD
CY2012	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations	-900000	USD
CY2011	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	97236000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	326725000	USD
CY2012	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-108079000	USD
CY2011	us-gaap	Interest Paid InterestPaid	175772000	USD
CY2012	us-gaap	Interest Paid InterestPaid	136760000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	183398000	USD
CY2011	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	175551000	USD
CY2012	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	81605000	USD
CY2011	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	31000	USD
CY2011	us-gaap	Mortgage Loan Related To Property Sales1 MortgageLoanRelatedToPropertySales1	8882000	USD
CY2012	us-gaap	Mortgage Loan Related To Property Sales1 MortgageLoanRelatedToPropertySales1	6380000	USD
CY2011	us-gaap	Loans Assumed1 LoansAssumed1	27149000	USD
CY2012	us-gaap	Loans Assumed1 LoansAssumed1	1018000	USD
CY2011	ewbc	Loans To Facilitate Sales Of Premises And Equipment LoansToFacilitateSalesOfPremisesAndEquipment	11100000	USD
CY2011	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	644915000	USD
CY2012	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	144131000	USD
CY2011	us-gaap	Stock Issued1 StockIssued1	520000	USD
CY2012	us-gaap	Stock Issued1 StockIssued1	570000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	425845000	USD
CY2013	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	130800000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-2734846000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	1881715000	USD
CY2013	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-427286000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1431185000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1333949000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	8454000	USD
CY2013	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2012Q4	ewbc	Federal Home Loan Bank Advances Outstanding Overnight Borrowings FederalHomeLoanBankAdvancesOutstandingOvernightBorrowings	0	USD
CY2013Q4	ewbc	Federal Home Loan Bank Advances Outstanding Overnight Borrowings FederalHomeLoanBankAdvancesOutstandingOvernightBorrowings	0	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	199992000	USD
CY2013Q4	ewbc	Percentage Of Allowance For Loan Losses Allocated To Covered Loans PercentageOfAllowanceForLoanLossesAllocatedToCoveredLoans	0.0310	pure
CY2013	ewbc	Certain Loans Acquired In Transfer Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferAccretableYieldReclassificationsFromNonaccretableDifference	190300000	USD
CY2012	ewbc	Certain Loans Acquired In Transfer Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferAccretableYieldReclassificationsFromNonaccretableDifference	38600000	USD
CY2013	ewbc	Percentage Of Purchased Loans Classified As Premium Financing Loans PercentageOfPurchasedLoansClassifiedAsPremiumFinancingLoans	0.36	pure
CY2013	ewbc	Percentage Of Purchased Loans Classified As Other Loans PercentageOfPurchasedLoansClassifiedAsOtherLoans	0.01	pure
CY2013Q4	ewbc	Securities Purchased Under Agreements To Resell Noncurrent SecuritiesPurchasedUnderAgreementsToResellNoncurrent	1300000000	USD
CY2013Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	48333000	USD
CY2013Q4	us-gaap	Interest Receivable InterestReceivable	116314000	USD
CY2013Q4	us-gaap	Due From Customer Acceptances DueFromCustomerAcceptances	21236000	USD
CY2013Q4	ewbc	Finite Lived Core Deposits Net FiniteLivedCoreDepositsNet	46920000	USD
CY2013Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	112650000	USD
CY2013Q4	us-gaap	Other Assets OtherAssets	533759000	USD
CY2013Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	14591019000	USD
CY2013Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	995000000	USD
CY2013Q4	ewbc	Accrued Interest Payable Accrued Expenses And Other Liabilities AccruedInterestPayableAccruedExpensesAndOtherLiabilities	394729000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	163000	USD
CY2013Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1571670000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1360130000	USD
CY2013Q4	us-gaap	Treasury Stock Value TreasuryStockValue	537279000	USD
CY2013	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	101169000	USD
CY2013	ewbc	Accretion Amortization Of Discount And Premiums Loans And Other Assets AccretionAmortizationOfDiscountAndPremiumsLoansAndOtherAssets	245665000	USD
CY2013	ewbc	Decrease In Fdic Indemnification Asset And Receivable DecreaseInFdicIndemnificationAssetAndReceivable	-228585000	USD
CY2013	ewbc	Proceeds From Sales Of Loans Originated As Loans Held For Sale ProceedsFromSalesOfLoansOriginatedAsLoansHeldForSale	6272000	USD
CY2013	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	3849000	USD
CY2013	ewbc	Net Gain On Sales Of Investment Securities Loans And Other Assets NetGainOnSalesOfInvestmentSecuritiesLoansAndOtherAssets	30224000	USD
CY2013	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	99688000	USD
CY2013	ewbc	Net Proceeds From Fdic Shared Loss Agreements NetProceedsFromFdicSharedLossAgreements	55826000	USD
CY2013	ewbc	Net Change In Accrued Interest Receivable And Other Assets NetChangeInAccruedInterestReceivableAndOtherAssets	-58881000	USD
CY2013	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-3778000	USD
CY2013	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	680821000	USD
CY2013	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	663569000	USD
CY2013	ewbc	Loans Held For Sale Originated For Investment LoansHeldForSaleOriginatedForInvestment	111054000	USD
CY2013	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	64312000	USD
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	6061000	USD
CY2013	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	444057000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	330000	USD
CY2013	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-20000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	100000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3054000	USD
CY2013	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	86290000	USD
CY2013	us-gaap	Interest Paid InterestPaid	112169000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	142980000	USD
CY2013	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	43989000	USD
CY2013	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	83027000	USD
CY2013	us-gaap	Mortgage Loan Related To Property Sales1 MortgageLoanRelatedToPropertySales1	139000	USD
CY2013	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	979394000	USD
CY2013	ewbc	Investment In Federal Home Loan Bank Stock InvestmentInFederalHomeLoanBankStock	3982000	USD
CY2013	ewbc	Investment In Federal Reserve Bank Stock InvestmentInFederalReserveBankStock	2887000	USD
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	633000	USD
CY2013	ewbc	Decrease In Fdic Indemnification Asset Receivable DecreaseInFdicIndemnificationAssetReceivable	-228585000	USD
CY2013	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	12089000	USD
CY2013	us-gaap	Fees And Commissions Other FeesAndCommissionsOther	22116000	USD
CY2013	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	12658000	USD
CY2013	us-gaap	Servicing Fees Net ServicingFeesNet	9368000	USD
CY2013	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3778000	USD
CY2013	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	7750000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	1521000	USD
CY2013	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	34801000	USD
CY2013	ewbc	Amortization Of Investments In Affordable Housing Partnerships AmortizationOfInvestmentsInAffordableHousingPartnerships	27268000	USD
CY2013	ewbc	Amortization And Impairment Write Downs Of Premiums On Deposits Acquired AmortizationAndImpairmentWriteDownsOfPremiumsOnDepositsAcquired	9365000	USD
CY2013	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	16550000	USD
CY2013	us-gaap	Loan Processing Fee LoanProcessingFee	12520000	USD
CY2013	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	-1128000	USD
CY2013	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	9095000	USD
CY2013	ewbc	Deposit Related Expenses DepositRelatedExpenses	6536000	USD
CY2013	us-gaap	Professional Fees ProfessionalFees	6446000	USD
CY2013	us-gaap	Other Noninterest Expense OtherNoninterestExpense	64594000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2013Q4	ewbc	Number Of Statutory Business Trusts NumberOfStatutoryBusinessTrusts	6	item
CY2013	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	5522000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	462000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	717000	USD
CY2013	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	13833000	USD
CY2012	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3012000	USD
CY2011	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	649000	USD
CY2013	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	5522000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	462000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	717000	USD
CY2013Q1	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	5089000	USD
CY2013Q2	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	723000	USD
CY2013	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	41381000	USD
CY2013	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	3442000	USD
CY2013	ewbc	Provision For Loan Lease And Other Losses Noncovered ProvisionForLoanLeaseAndOtherLossesNoncovered	18336000	USD
CY2013	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	4028000	USD
CY2013	us-gaap	Labor And Related Expense LaborAndRelatedExpense	175906000	USD
CY2012Q4	ewbc	Investment In Affordable Housing Partnerships Sold And Other Investments InvestmentInAffordableHousingPartnershipsSoldAndOtherInvestments	0	USD
CY2013Q4	ewbc	Percentage Of Any Reimbursable Expense Recorded As Interest Income PercentageOfAnyReimbursableExpenseRecordedAsInterestIncome	0.80	pure
CY2012	ewbc	Number Of Loss Grade Loans NumberOfLossGradeLoans	0	item
CY2012	ewbc	Decrease In Unrecognized Tax Benefits Reserve For Enterprise Zone Net Interest Deduction DecreaseInUnrecognizedTaxBenefitsReserveForEnterpriseZoneNetInterestDeduction	0	USD
CY2013	us-gaap	Schedule Of Repurchase Agreements ScheduleOfRepurchaseAgreements	<div style="font-size:10.0pt;font-family:Times New Roman;"> <p style="TEXT-ALIGN: justify; TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"> </p> <table style="text-align:left;WIDTH: 86.66%; BORDER-COLLAPSE: collapse; MARGIN-LEFT: 0.5in;" border="0" cellspacing="0" cellpadding="0" width="86%"> <tr style="padding:0;"> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 39.54%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="39%"> <p style="MARGIN: 0in 0in 0pt;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td> <td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 26.72%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="26%" colspan="5"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2">December 31, 2013</font></b></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td> <td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 26.82%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="26%" colspan="4"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2">December 31, 2012</font></b></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td></tr> <tr style="padding:0;"> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 39.54%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="39%"> <p style="MARGIN: 0in 0in 0pt;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td> <td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.82%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="3"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2">Amount</font></b></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td> <td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10%; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="10%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2">Rate</font></b></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td> <td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.86%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2">Amount</font></b></p></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td> <td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.08%; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="10%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2">Rate</font></b></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td></tr> <tr style="padding:0;"> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 39.54%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="39%"> <p style="MARGIN: 0in 0in 0pt;"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2">Year of Maturity</font></b></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 56.42%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="56%" colspan="10"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"><i><font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 9pt;" size="1">(Dollars in thousands)</font></i></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%"> <p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"> </p></td></tr> <tr style="padding:0;"> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 39.54%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="39%"> <p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">2015</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0in 0pt;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.6%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">  $</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 11.22%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="11%" colspan="2"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">245,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">4.49%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.7%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">  $</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 11.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="11%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">245,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.08%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">4.49%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="1%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td></tr> <tr style="padding:0;"> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 39.54%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="39%"> <p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">2016</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0in 0pt;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.82%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="3"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">250,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">5.01%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.86%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">350,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.08%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">4.96%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td></tr> <tr style="padding:0;"> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 39.54%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="39%"> <p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">2017</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0in 0pt;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.82%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="13%" colspan="3"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">50,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">4.15%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.86%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="13%" colspan="2"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">50,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.08%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">4.15%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="1%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td></tr> <tr style="padding:0;"> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 39.54%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="39%"> <p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">2022</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0in 0pt;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.82%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="3"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">350,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">3.51%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.86%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="13%" colspan="2"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">350,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.08%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">3.53%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td></tr> <tr style="padding:0;"> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 39.54%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="39%"> <p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">2023</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0in 0pt;"> </p></td> <td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.82%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="13%" colspan="3"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">100,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">2.49%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 13.86%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="13%" colspan="2"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">—</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.08%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">—</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; BACKGROUND: #cceeff; PADDING-TOP: 0in;" bgcolor="#CCEEFF" valign="bottom" width="1%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td></tr> <tr style="padding:0;"> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 39.54%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="39%"> <p style="TEXT-INDENT: -10pt; MARGIN: 0in 0in 0pt 10pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">Total</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0in 0pt;"> </p></td> <td style="BORDER-BOTTOM: windowtext 2.25pt double; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.68%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="2%" colspan="2"> <p style="MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">  $</font></p></td> <td style="BORDER-BOTTOM: windowtext 2.25pt double; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 11.16%; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="11%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">995,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="BORDER-BOTTOM: windowtext 2.25pt double; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">4.06%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="BORDER-BOTTOM: windowtext 2.25pt double; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.7%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0in 0pt;"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">  $</font></p></td> <td style="BORDER-BOTTOM: windowtext 2.25pt double; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 11.16%; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="11%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">995,000</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 2.88%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="2%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td> <td style="BORDER-BOTTOM: windowtext 2.25pt double; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 10.08%; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in;" valign="bottom" width="10%"> <p style="TEXT-ALIGN: right; MARGIN: 0in 0.1in 0pt 0in;" align="right"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2">4.30%</font></p></td> <td style="PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; WIDTH: 1.16%; PADDING-RIGHT: 0in; PADDING-TOP: 0in;" valign="bottom" width="1%"> <p style="MARGIN: 0in 0.1in 0pt 0in;"> </p></td></tr> <tr style="padding:0;"> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="256"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="19"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="17"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="1"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="72"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="19"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="65"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="19"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="18"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="72"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="19"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="65"></td> <td style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-TOP: medium none; BORDER-RIGHT: medium none;" width="8"></td></tr></table> <p style="TEXT-ALIGN: justify; TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"> </p> </div>
CY2013Q4	ewbc	Number Of Wholly Owned Statutory Business Trusts NumberOfWhollyOwnedStatutoryBusinessTrusts	6	trust
CY2013Q4	ewbc	Number Of Individual Securities With Continuous Unrealized Loss Position NumberOfIndividualSecuritiesWithContinuousUnrealizedLossPosition	239	item
CY2013	us-gaap	Property Plant And Equipment Gross Period Increase Decrease PropertyPlantAndEquipmentGrossPeriodIncreaseDecrease	70200000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered	17600613000	USD
CY2013Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	40273000	USD
CY2013	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-size:10.0pt;font-family:Times New Roman;"> <p style="TEXT-ALIGN: justify; TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt;"><b><i><font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2">Reclassifications</font></i></b> <font style="FONT-SIZE: 10pt;" size="2">— Certain items in the consolidated balance sheet and the consolidated statements of income for the years ended December 31, 2012 and 2011 were reclassified to conform to the 2013 and 2012 presentation, respectively. These reclassifications did not affect previously reported net income.</font></p> </div>
CY2013Q4	ewbc	Derivative Notional Amount Entered Into During The Period DerivativeNotionalAmountEnteredIntoDuringThePeriod	85000000	USD
CY2013	ewbc	Number Of Junior Subordinated Debts Called NumberOfJuniorSubordinatedDebtsCalled	1	item
CY2013Q4	ewbc	Investmentand Other Tax Credit InvestmentandOtherTaxCredit	35000000	USD
CY2013Q4	ewbc	Number Of Segment Whom Broad Administrative Support Provided NumberOfSegmentWhomBroadAdministrativeSupportProvided	2	item
CY2013	ewbc	Number Of Business Divisions NumberOfBusinessDivisions	3	item
CY2013Q4	us-gaap	Long Term Debt LongTermDebt	226868000	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	137178000	USD
CY2013	us-gaap	Investment Tax Credit InvestmentTaxCredit	34200000	USD
CY2012Q2	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	-1095000	USD
CY2013Q4	ewbc	Deferred Tax Assets Mortgage Servicing Rights DeferredTaxAssetsMortgageServicingRights	368000	USD
CY2012Q3	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	5179000	USD
CY2013Q4	ewbc	Covered Loans Collectively Evaluated For Impairment CoveredLoansCollectivelyEvaluatedForImpairment	2824000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	22365843000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24730068000	USD
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
CY2012	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	5165000	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	5736000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	295045000	USD
CY2011	ewbc	Proceeds From Sale Of Investments In Affordable Housing Partnerships And Other Investments ProceedsFromSaleOfInvestmentsInAffordableHousingPartnershipsAndOtherInvestments	7100000	USD
CY2013	ewbc	Investments In Affordable Housing Partnerships And Other Investments InvestmentsInAffordableHousingPartnershipsAndOtherInvestments	42149000	USD
CY2012	ewbc	Investments In Affordable Housing Partnerships And Other Investments InvestmentsInAffordableHousingPartnershipsAndOtherInvestments	57831000	USD
CY2011	ewbc	Investments In Affordable Housing Partnerships And Other Investments InvestmentsInAffordableHousingPartnershipsAndOtherInvestments	36642000	USD
CY2012Q4	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	-689000	USD
CY2013Q3	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	-964000	USD
CY2013Q4	ewbc	Provision For Loan Lease And Other Losses Covered ProvisionForLoanLeaseAndOtherLossesCovered	-820000	USD

Files In Submission

Name	View Source	Status
0001104659-14-015311-index-headers.html	Edgar Link	pending
0001104659-14-015311-index.html	Edgar Link	pending
0001104659-14-015311.txt	Edgar Link	pending
0001104659-14-015311-xbrl.zip	Edgar Link	pending
a13-27261_110k.htm	Edgar Link	pending
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ewbc-20131231.xml	Edgar Link	completed
ewbc-20131231.xsd	Edgar Link	pending
ewbc-20131231_cal.xml	Edgar Link	unprocessable
ewbc-20131231_def.xml	Edgar Link	unprocessable
ewbc-20131231_lab.xml	Edgar Link	unprocessable
ewbc-20131231_pre.xml	Edgar Link	unprocessable
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$EWBC
EAST WEST BANCORP INC Stock $ewbc

2013 Q4 Form 10-K Financial Statement

#000110465914015311 Filed on March 03, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EWBC EAST WEST BANCORP INC Stock $ewbc

2013 Q4 Form 10-K Financial Statement

#000110465914015311 Filed on March 03, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EWBC
EAST WEST BANCORP INC Stock $ewbc