$WAL
WESTERN ALLIANCE BANCORPORATION Stock $wal

$wal Overview Financials Valuation SEC Filings Company Website

2015 Q2 Form 10-Q Financial Statement

#000121254515000188 Filed on August 07, 2015

Income Statement

Concept	2015 Q2	2014 Q2
Revenue	$116.6M	$102.0M
YoY Change	14.36%	14.21%
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	$1.800M	$1.700M
YoY Change	5.88%	88.89%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$7.900M	$8.075M
YoY Change	-2.17%	13.21%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$53.05M	$46.75M
YoY Change	13.49%	11.57%
Income Tax	$13.58M	$10.71M
% Of Pretax Income	25.59%	22.9%
Net Earnings	$39.48M	$35.54M
YoY Change	11.08%	4.3%
Net Earnings / Revenue	33.85%	34.85%
Basic Earnings Per Share	$0.44	$0.41
Diluted Earnings Per Share	$0.44	$0.40
COMMON SHARES
Basic Shares Outstanding	88.18M shares	86.50M shares
Diluted Shares Outstanding	88.68M shares	87.33M shares

Balance Sheet

Concept	2015 Q2	2014 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$758.3M	$379.3M
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	$116.0M	$109.6M
YoY Change	5.88%	3.3%
Goodwill	$282.9M	$23.22M
YoY Change	1117.93%	0.0%
Intangibles	$17.12M	$3.251M
YoY Change	426.73%	-39.17%
Long-Term Investments
YoY Change
Other Assets	$82.00M	$68.00M
YoY Change	20.59%	-18.07%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$13.47B	$10.02B
YoY Change	34.38%	16.64%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$69.43M	$61.94M
YoY Change	12.09%	-11.51%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$158.0M	$54.00M
YoY Change	192.59%	-91.0%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$275.6M
YoY Change	-100.0%	588.98%
Other Long-Term Liabilities	$171.0M	$162.0M
YoY Change	5.56%	5.88%
Total Long-Term Liabilities	$0.00	$275.6M
YoY Change	-100.0%	42.79%
TOTAL LIABILITIES
Total Short-Term Liabilities	$158.0M	$54.00M
Total Long-Term Liabilities	$0.00	$275.6M
Total Liabilities	$11.96B	$9.066B
YoY Change	31.87%	16.32%
SHAREHOLDERS EQUITY
Retained Earnings	$159.9M	$4.807M
YoY Change	3227.21%	-104.0%
Common Stock	$10.00K	$9.000K
YoY Change	11.11%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.515B	$957.7M
YoY Change
Total Liabilities & Shareholders Equity	$13.47B	$10.02B
YoY Change	34.38%	16.64%

Cashflow Statement

Concept	2015 Q2	2014 Q2
OPERATING ACTIVITIES
Net Income	$39.48M	$35.54M
YoY Change	11.08%	4.3%
Depreciation, Depletion And Amortization	$1.800M	$1.700M
YoY Change	5.88%	88.89%
Cash From Operating Activities	$16.50M	$20.50M
YoY Change	-19.51%	-49.26%
INVESTING ACTIVITIES
Capital Expenditures	-$1.700M	-$4.400M
YoY Change	-61.36%	1366.67%
Acquisitions
YoY Change
Other Investing Activities	$253.2M	-$308.5M
YoY Change	-182.07%	80.83%
Cash From Investing Activities	$251.5M	-$312.9M
YoY Change	-180.38%	82.88%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-2.000M	205.7M
YoY Change	-100.97%	-581.73%
NET CHANGE
Cash From Operating Activities	16.50M	20.50M
Cash From Investing Activities	251.5M	-312.9M
Cash From Financing Activities	-2.000M	205.7M
Net Change In Cash	266.0M	-86.70M
YoY Change	-406.81%	-50.0%
FREE CASH FLOW
Cash From Operating Activities	$16.50M	$20.50M
Capital Expenditures	-$1.700M	-$4.400M
Free Cash Flow	$18.20M	$24.90M
YoY Change	-26.91%	-38.82%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
	dei	Document Period End Date DocumentPeriodEndDate	2015-06-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0001212545
CY2015Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	102322933	shares
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	WESTERN ALLIANCE BANCORPORATION
	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
	wal	Accretion And Amortization Fair Market Value Adjustments Relating To Acquisitionsof Loans AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans	4118000	USD
	wal	Amortizationof Low Income Housing Tax Credits AmortizationofLowIncomeHousingTaxCredits	5600000	USD
	dei	Trading Symbol TradingSymbol	WAL
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	4041000	USD
	wal	Accretionand Amortization Fair Market Value Adjustments Relatingto Acquisitionsof Other Assetsand Liabilities AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities	193000	USD
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	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-4133000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-21546000	USD
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	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1908000	USD
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CY2015Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.00
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CY2014Q4	us-gaap	Common Stock Value CommonStockValue	9000	USD
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CY2014Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	55141000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	96641000	USD
CY2015Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	26644000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	73618000	USD
CY2015Q2	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	58400000	USD
	us-gaap	Debt Issuance Costs DebtIssuanceCosts	-1600000	USD
CY2015Q2	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	8500000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-6665000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-2345000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	62686000	USD
CY2015Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	82075000	USD
CY2015Q2	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	8500000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1800000	USD
CY2015Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1100000	USD
CY2015Q2	us-gaap	Defined Benefit Pension Plan Current And Noncurrent Liabilities DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities	7100000	USD
CY2014Q2	us-gaap	Deposits Deposits	8469500000	USD
CY2014Q4	us-gaap	Deposits Deposits	8931043000	USD
CY2015Q2	us-gaap	Deposits Deposits	11406728000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3220000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3943000	USD
CY2014Q2	us-gaap	Derivative Assets DerivativeAssets	0	USD
CY2014Q4	us-gaap	Derivative Assets DerivativeAssets	7000	USD
CY2015Q2	us-gaap	Derivative Assets DerivativeAssets	198000	USD
CY2014Q2	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	2000	USD
CY2014Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	7000	USD
CY2015Q2	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	198000	USD
CY2014Q2	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	29129000	USD
CY2014Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	57820000	USD
CY2015Q2	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	49037000	USD
CY2014Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	29127000	USD
CY2014Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	57820000	USD
CY2015Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	49037000	USD
CY2014Q2	us-gaap	Dividend Income Securities Operating Taxable DividendIncomeSecuritiesOperatingTaxable	968000	USD
	us-gaap	Dividend Income Securities Operating Taxable DividendIncomeSecuritiesOperatingTaxable	2066000	USD
CY2015Q2	us-gaap	Dividend Income Securities Operating Taxable DividendIncomeSecuritiesOperatingTaxable	1273000	USD
	us-gaap	Dividend Income Securities Operating Taxable DividendIncomeSecuritiesOperatingTaxable	2548000	USD
	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	705000	USD
	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	423000	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.76
CY2015Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.84
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.40
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.76
CY2015Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.84
CY2014Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2290
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2394
CY2015Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2339
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2481
	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	1830000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	5164000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	1830000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	5164000	USD
CY2014Q2	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-319000	USD
	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-1699000	USD
CY2015Q2	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-7293000	USD
	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-7166000	USD
CY2014Q4	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Face Amount Liability FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability	2256117000	USD
CY2015Q2	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Face Amount Liability FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability	3361502000	USD
CY2014Q2	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	123000	USD
	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-837000	USD
CY2015Q2	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-7745000	USD
	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-8059000	USD
CY2014Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	40437000	USD
CY2015Q2	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	48482000	USD
CY2014Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2015Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	284000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-641000	USD
CY2014Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	-58000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	-58000	USD
CY2015Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	0	USD
CY2014	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0124
	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0161
CY2014Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	96987000	USD
CY2015Q2	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	11051000	USD
CY2014Q2	us-gaap	Fees And Commissions FeesAndCommissions	2758000	USD
	us-gaap	Fees And Commissions FeesAndCommissions	5319000	USD
CY2015Q2	us-gaap	Fees And Commissions FeesAndCommissions	3128000	USD
	us-gaap	Fees And Commissions FeesAndCommissions	6017000	USD
CY2014Q2	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	860000	USD
	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	1645000	USD
CY2015Q2	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	899000	USD
	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	1712000	USD
CY2013Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	100050000	USD
CY2014Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	103899000	USD
CY2014Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	105937000	USD
CY2014Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	110216000	USD
CY2015Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	112098000	USD
CY2015Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	115056000	USD
CY2014Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	99188000	USD
CY2015Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	107862000	USD
CY2014Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	10765000	USD
CY2015Q2	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	7157000	USD
CY2014Q2	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3505000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	5921000	USD
CY2015Q2	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	5000000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	7029000	USD
CY2014Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1974000	USD
CY2015Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2042000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2889000	USD
CY2014Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	8135041000	USD
CY2015Q2	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	10071590000	USD
CY2014Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	166750000	USD
CY2015Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	151149000	USD
CY2014Q2	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	4
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	7
CY2015Q2	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1
CY2014Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	14972000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	15540000	USD
CY2015Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	256000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	256000	USD
CY2014Q2	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	15286000	USD
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	16552000	USD
CY2015Q2	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	256000	USD
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	256000	USD
CY2014Q2	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	3
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	6
CY2015Q2	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	1
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	2
CY2014Q2	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	398000	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	966000	USD
CY2015Q2	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	202000	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	339000	USD
CY2014Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	5132000	USD
CY2015Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	8284000	USD
CY2014Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	8366782000	USD
CY2015Q2	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	10295162000	USD
CY2014Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	67659000	USD
CY2015Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	59425000	USD
CY2014Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	31483000	USD
CY2015Q2	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	26059000	USD
	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	56300000	USD
CY2013Q4	us-gaap	Foreclosed Assets ForeclosedAssets	66719000	USD
CY2014Q1	us-gaap	Foreclosed Assets ForeclosedAssets	56450000	USD
CY2014Q2	us-gaap	Foreclosed Assets ForeclosedAssets	59292000	USD
CY2014Q4	us-gaap	Foreclosed Assets ForeclosedAssets	57150000	USD
CY2015Q1	us-gaap	Foreclosed Assets ForeclosedAssets	63759000	USD
CY2015Q2	us-gaap	Foreclosed Assets ForeclosedAssets	59335000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	1491000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	18000	USD
CY2014Q2	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-163000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	203000	USD
	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	319000	USD
CY2015Q2	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	55000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	644000	USD
	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	0	USD
CY2014Q2	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	-163000	USD
	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	203000	USD
CY2015Q2	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	55000	USD
	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	644000	USD
CY2014Q2	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	0	USD
	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	366000	USD
CY2015Q2	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	55000	USD
	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	1103000	USD
CY2014Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2015Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-81000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-81000	USD
CY2014Q2	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	11000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	1179000	USD
CY2015Q2	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	1940000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	3055000	USD
CY2014Q2	us-gaap	General Insurance Expense GeneralInsuranceExpense	2087000	USD
	us-gaap	General Insurance Expense GeneralInsuranceExpense	4480000	USD
CY2015Q2	us-gaap	General Insurance Expense GeneralInsuranceExpense	2274000	USD
	us-gaap	General Insurance Expense GeneralInsuranceExpense	4364000	USD
CY2014Q4	us-gaap	Goodwill Goodwill	23224000	USD
CY2015Q2	us-gaap	Goodwill Goodwill	282851000	USD
CY2014Q2	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	167326000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	170010000	USD
CY2015Q2	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	155943000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	159186000	USD
CY2014Q2	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1435000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	2821000	USD
CY2015Q2	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1126000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	2310000	USD
CY2014Q2	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	566000	USD
	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	1172000	USD
CY2015Q2	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	548000	USD
	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	1201000	USD
CY2014Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	166750000	USD
CY2015Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	151149000	USD
CY2014Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	10765000	USD
CY2015Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	7157000	USD
CY2014Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	41822000	USD
CY2015Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	44780000	USD
CY2014Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	44220000	USD
CY2015Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	46364000	USD
CY2014Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	124928000	USD
CY2015Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	106369000	USD
CY2014Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	134791000	USD
CY2015Q2	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	114015000	USD
CY2014Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	36042000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	67781000	USD
CY2015Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	34719000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	74909000	USD
CY2014Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	46748000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	89111000	USD
CY2015Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	45318000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	99626000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.85
CY2014Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.41
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.78
CY2015Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.39
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.84
CY2014Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.41
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.77
CY2015Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.39
CY2014Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-504000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-1158000	USD
CY2015Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2014Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.02
CY2015Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2014Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
CY2015Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2014Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10706000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21330000	USD
CY2015Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10599000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24717000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	17180000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	25801000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-19400000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	631609000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	733788000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-7419000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-8742000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-9738000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-15996000	USD
CY2014Q2	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	2580000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	5309000	USD
CY2015Q2	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	2683000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	5809000	USD
CY2014Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2689000	USD
CY2015Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	17124000	USD
CY2014Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	26500000	USD
CY2014Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	25900000	USD
CY2015Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	300000000	USD
CY2014Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	101973000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	200674000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	227580000	USD
CY2014Q2	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	1000	USD
CY2015Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	116618000	USD
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	2000	USD
CY2015Q2	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	1000	USD
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	1000	USD
CY2014Q2	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	90583000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	177387000	USD
CY2015Q2	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	105468000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	205859000	USD
CY2014Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	6642995000	USD
CY2015Q2	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	7482272000	USD
CY2014Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	39067000	USD
CY2015Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	550257000	USD
CY2014Q2	us-gaap	Interest Expense InterestExpense	8075000	USD
	us-gaap	Interest Expense InterestExpense	15999000	USD
CY2015Q2	us-gaap	Interest Expense InterestExpense	7900000	USD
	us-gaap	Interest Expense InterestExpense	15754000	USD
CY2014Q2	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	2686000	USD
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	5505000	USD
CY2015Q2	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	2068000	USD
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	4312000	USD
CY2014Q2	us-gaap	Interest Expense Debt InterestExpenseDebt	443000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	864000	USD
CY2015Q2	us-gaap	Interest Expense Debt InterestExpenseDebt	-451000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	-892000	USD
CY2014Q2	us-gaap	Interest Expense Deposits InterestExpenseDeposits	4930000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	9595000	USD
CY2015Q2	us-gaap	Interest Expense Deposits InterestExpenseDeposits	5362000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	10508000	USD
CY2014Q2	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	443000	USD
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	864000	USD
CY2015Q2	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	451000	USD
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	892000	USD
CY2014Q2	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	16000	USD
	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	35000	USD
CY2015Q2	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	19000	USD
	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	42000	USD
CY2014Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	93391000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	180668000	USD
CY2015Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	108718000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	211126000	USD
CY2014Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	93898000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	184675000	USD
CY2015Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	108718000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	211826000	USD
CY2014Q2	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	9926000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	20153000	USD
CY2015Q2	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	8003000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	16516000	USD
	us-gaap	Interest Paid InterestPaid	10423000	USD
	us-gaap	Interest Paid InterestPaid	13881000	USD
CY2014Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	40437000	USD
CY2015Q2	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	59769000	USD
CY2014Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	31751000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	61306000	USD
CY2015Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	32406000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	64947000	USD
CY2014Q2	us-gaap	Liabilities Liabilities	9065900000	USD
CY2014Q4	us-gaap	Liabilities Liabilities	9599570000	USD
CY2015Q2	us-gaap	Liabilities Liabilities	11955360000	USD
CY2014Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	10023600000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	10600498000	USD
CY2015Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	13470104000	USD
CY2015Q2	us-gaap	Line Of Credit Facility Expiration Period LineOfCreditFacilityExpirationPeriod	P1Y
CY2014Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0175
CY2014Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	25000000	USD
CY2015Q2	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	0	USD
CY2014Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	105900000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	110216000	USD
CY2015Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	115056000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	12500000	USD
CY2015Q2	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	14000000	USD
	us-gaap	Loans And Leases Receivable Gain Loss On Sales Net LoansAndLeasesReceivableGainLossOnSalesNet	300000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	8398265000	USD
CY2015Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	10321221000	USD
CY2014Q2	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	800000	USD
	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	1800000	USD
CY2015Q2	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	700000	USD
	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	1400000	USD
CY2014Q2	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	7544500000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	8398265000	USD
CY2015Q2	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	10321221000	USD
CY2014Q2	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	7438600000	USD
CY2014Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	8288049000	USD
CY2015Q2	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	10206165000	USD
CY2014Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	210094000	USD
CY2015Q2	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	0	USD
CY2014Q4	us-gaap	Longterm Debt Weighted Average Interest Rate LongtermDebtWeightedAverageInterestRate	0.0106
CY2014Q2	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	163000	USD
	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	163000	USD
	wal	Financing Receivable Waived Fees And Other Expenses FinancingReceivableWaivedFeesAndOtherExpenses	52000	USD
CY2015Q2	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	0	USD
	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	459000	USD
CY2014Q2	us-gaap	Marketing Expense MarketingExpense	506000	USD
	us-gaap	Marketing Expense MarketingExpense	1065000	USD
CY2015Q2	us-gaap	Marketing Expense MarketingExpense	463000	USD
	us-gaap	Marketing Expense MarketingExpense	840000	USD
CY2014Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	451000	USD
CY2015Q2	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	875000	USD
CY2014Q2	us-gaap	Mortgage Loans On Real Estate Foreclosures MortgageLoansOnRealEstateForeclosures	4309000	USD
	us-gaap	Mortgage Loans On Real Estate Foreclosures MortgageLoansOnRealEstateForeclosures	6419000	USD
CY2015Q2	us-gaap	Mortgage Loans On Real Estate Foreclosures MortgageLoansOnRealEstateForeclosures	5739000	USD
	us-gaap	Mortgage Loans On Real Estate Foreclosures MortgageLoansOnRealEstateForeclosures	13459000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	615007000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	612493000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-601760000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-95506000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	60521000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	76953000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	35538000	USD
	us-gaap	Net Income Loss NetIncomeLoss	66623000	USD
CY2015Q2	us-gaap	Net Income Loss NetIncomeLoss	34719000	USD
	us-gaap	Net Income Loss NetIncomeLoss	74909000	USD
CY2014Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	35186000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	65918000	USD
CY2015Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	34472000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	74486000	USD
CY2014Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2288048000	USD
CY2015Q2	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	3924456000	USD
CY2014Q2	us-gaap	Noninterest Expense NoninterestExpense	52242000	USD
	us-gaap	Noninterest Expense NoninterestExpense	101711000	USD
CY2015Q2	us-gaap	Noninterest Expense NoninterestExpense	61209000	USD
	us-gaap	Noninterest Expense NoninterestExpense	115242000	USD
CY2014Q2	us-gaap	Noninterest Income NoninterestIncome	5599000	USD
	us-gaap	Noninterest Income NoninterestIncome	10154000	USD
CY2015Q2	us-gaap	Noninterest Income NoninterestIncome	-2191000	USD
	us-gaap	Noninterest Income NoninterestIncome	3742000	USD
CY2014Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	950000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2120000	USD
CY2015Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	921000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1895000	USD
CY2014Q4	us-gaap	Notes Receivable Net NotesReceivableNet	8398265000	USD
CY2015Q2	us-gaap	Notes Receivable Net NotesReceivableNet	10321221000	USD
CY2014Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	67	Property
CY2015Q2	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	56	Property
CY2014Q2	us-gaap	Occupancy Net OccupancyNet	4293000	USD
	us-gaap	Occupancy Net OccupancyNet	8979000	USD
CY2015Q2	us-gaap	Occupancy Net OccupancyNet	4949000	USD
	us-gaap	Occupancy Net OccupancyNet	9762000	USD
CY2014Q2	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1700000	USD
	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	3300000	USD
CY2015Q2	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1600000	USD
	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	3200000	USD
CY2014Q4	us-gaap	Other Assets OtherAssets	198696000	USD
CY2015Q2	us-gaap	Other Assets OtherAssets	215823000	USD
CY2014Q2	us-gaap	Other Borrowings OtherBorrowings	337500000	USD
CY2014Q4	us-gaap	Other Borrowings OtherBorrowings	390263000	USD
CY2015Q2	us-gaap	Other Borrowings OtherBorrowings	69429000	USD
CY2014Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-6294000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-12658000	USD
CY2015Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	5135000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	858000	USD
CY2014Q2	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	10525000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	21169000	USD
CY2015Q2	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-8378000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-1225000	USD
CY2014Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19603000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	30018000	USD
CY2015Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-8075000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1291000	USD
CY2014Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2015Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-337000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-337000	USD
CY2014Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
CY2015Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-207000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-207000	USD
CY2014Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-102000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	127000	USD
CY2015Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	34000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	403000	USD
CY2014Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-61000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	76000	USD
CY2015Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	21000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	241000	USD
CY2014Q2	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	8976000	USD
	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	8976000	USD
CY2015Q2	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	0	USD
CY2014Q2	us-gaap	Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred To Available For Sale Securities Tax OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax	-5367000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred To Available For Sale Securities Tax OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax	-5367000	USD
CY2015Q2	us-gaap	Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred To Available For Sale Securities Tax OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax	0	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred To Available For Sale Securities Tax OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax	0	USD
CY2014Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	10525000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	21169000	USD
CY2015Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-8378000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1225000	USD
CY2014Q2	us-gaap	Other Foreclosed Assets OtherForeclosedAssets	59300000	USD
CY2014Q4	us-gaap	Other Foreclosed Assets OtherForeclosedAssets	57100000	USD
CY2015Q2	us-gaap	Other Foreclosed Assets OtherForeclosedAssets	59300000	USD
CY2014Q2	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	496000	USD
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1068000	USD
CY2015Q2	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1874000	USD
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	2657000	USD
CY2014Q4	us-gaap	Other Liabilities OtherLiabilities	182928000	USD
CY2015Q2	us-gaap	Other Liabilities OtherLiabilities	171034000	USD
CY2014Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	58182000	USD
CY2015Q2	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	58378000	USD
CY2014Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4902000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10870000	USD
CY2015Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	5021000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10459000	USD
CY2014Q2	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	0	USD
CY2015Q2	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	0	USD
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	5491000	USD
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	3886000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	705000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	423000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	38785000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	94532000	USD
CY2014Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Other Debt Securities Available For Sale Or Held For Investment PledgedFinancialInstrumentsNotSeparatelyReportedOtherDebtSecuritiesAvailableForSaleOrHeldForInvestment	755500000	USD
CY2015Q2	us-gaap	Pledged Financial Instruments Not Separately Reported Other Debt Securities Available For Sale Or Held For Investment PledgedFinancialInstrumentsNotSeparatelyReportedOtherDebtSecuritiesAvailableForSaleOrHeldForInvestment	658800000	USD
CY2014Q2	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	352000	USD
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	705000	USD
CY2015Q2	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	247000	USD
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	423000	USD
CY2014Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	1000
CY2015Q2	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	1000
CY2014Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2015Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2014Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2015Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2014Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	141000	shares
CY2015Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	70500	shares
CY2014Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	141000	shares
CY2015Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	70500	shares
CY2014Q4	us-gaap	Preferred Stock Value PreferredStockValue	70500000	USD
CY2015Q2	us-gaap	Preferred Stock Value PreferredStockValue	70500000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2611000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2015Q2	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	150000000	USD
	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	USD
	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	148450000	USD
	us-gaap	Proceeds From Loan And Lease Originations And Principal Collections1 ProceedsFromLoanAndLeaseOriginationsAndPrincipalCollections1	-719720000	USD
	us-gaap	Proceeds From Loan And Lease Originations And Principal Collections1 ProceedsFromLoanAndLeaseOriginationsAndPrincipalCollections1	-515143000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	124615000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	114127000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	261000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	143000	USD
	us-gaap	Proceeds From Repayments Of Debt ProceedsFromRepaymentsOfDebt	-22334000	USD
	us-gaap	Proceeds From Repayments Of Debt ProceedsFromRepaymentsOfDebt	-276023000	USD
	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	6600000	USD
	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	0	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	26840000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	78040000	USD
CY2014Q2	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	1220000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	14732000	USD
CY2015Q2	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	12935000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	14375000	USD
	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	4911000	USD
	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	-18749000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1996000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1537000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	113818000	USD
CY2015Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	116044000	USD
CY2014Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	507000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	4007000	USD
CY2015Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	0	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	700000	USD
CY2013Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	21702000	USD
CY2014Q1	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	15776000	USD
CY2014Q2	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	15351000	USD
CY2014Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	14271000	USD
CY2015Q1	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	14209000	USD
CY2015Q2	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	12447000	USD
CY2014Q4	us-gaap	Receivable With Imputed Interest Discount ReceivableWithImputedInterestDiscount	7500000	USD
CY2015Q2	us-gaap	Receivable With Imputed Interest Discount ReceivableWithImputedInterestDiscount	8100000	USD
CY2014Q2	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-102000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	127000	USD
CY2015Q2	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	34000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	403000	USD
CY2015Q2	us-gaap	Repayments Of Debt RepaymentsOfDebt	200000000	USD
CY2014Q4	us-gaap	Restricted Investments RestrictedInvestments	25275000	USD
CY2015Q2	us-gaap	Restricted Investments RestrictedInvestments	51040000	USD
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	85453000	USD
CY2015Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	159939000	USD
CY2014Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	0	USD
CY2015Q2	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	58150000	USD
CY2014Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	54899000	USD
CY2015Q2	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	42172000	USD
CY2014Q4	us-gaap	Securities Sold Under Agreements To Repurchase Not Subject To Master Netting Arrangement SecuritiesSoldUnderAgreementsToRepurchaseNotSubjectToMasterNettingArrangement	0	USD
CY2015Q2	us-gaap	Securities Sold Under Agreements To Repurchase Not Subject To Master Netting Arrangement SecuritiesSoldUnderAgreementsToRepurchaseNotSubjectToMasterNettingArrangement	57580000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	6039000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	7908000	USD
CY2014Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	180169000	USD
CY2015Q2	us-gaap	Short Term Borrowings ShortTermBorrowings	69429000	USD
CY2014Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0415
CY2015Q2	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0867
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2611000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	431031000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	1623000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	8053000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1996000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1537000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	855498000	USD
CY2014Q2	us-gaap	Stockholders Equity StockholdersEquity	957664000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	1000928000	USD
CY2015Q2	us-gaap	Stockholders Equity StockholdersEquity	1514744000	USD
CY2015Q2	us-gaap	Tax Credit Carryforward Valuation Allowance TaxCreditCarryforwardValuationAllowance	500000	USD
CY2014Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.040
CY2015Q2	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.040
CY2014Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.050
CY2015Q2	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.050
CY2014Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.040
CY2015Q2	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.060
CY2014Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.060
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CY2014Q4	us-gaap	Trade And Loans Receivables Held For Sale Net Not Part Of Disposal Group TradeAndLoansReceivablesHeldForSaleNetNotPartOfDisposalGroup	0	USD
CY2015Q2	us-gaap	Trade And Loans Receivables Held For Sale Net Not Part Of Disposal Group TradeAndLoansReceivablesHeldForSaleNetNotPartOfDisposalGroup	39401000	USD
CY2014Q4	us-gaap	Trading Securities TradingSecurities	1858000	USD
CY2015Q2	us-gaap	Trading Securities TradingSecurities	1701000	USD
CY2015Q2	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	500000	USD
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	88567000	shares
CY2014Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	87333000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	87229000	shares
CY2015Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	88682000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	88567000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	88059000	shares
CY2014Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	86501000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	86379000	shares
CY2015Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	88177000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	88059000	shares
	wal	Accretion And Amortization Fair Market Value Adjustments Relating To Acquisitionsof Loans AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans	8962000	USD
CY2015Q2	wal	Additional Collateral Amount AdditionalCollateralAmount	64600000	USD
CY2014Q2	wal	Amortizationof Low Income Housing Tax Credits AmortizationofLowIncomeHousingTaxCredits	3300000	USD
	wal	Amortizationof Low Income Housing Tax Credits AmortizationofLowIncomeHousingTaxCredits	6300000	USD
CY2015Q2	wal	Amortizationof Low Income Housing Tax Credits AmortizationofLowIncomeHousingTaxCredits	2200000	USD
CY2015Q2	wal	Borrowingsand Qualifying Debt BorrowingsandQualifyingDebt	277800000	USD
CY2014Q4	wal	Business Combination Fair Market Value Adjustmenton Junior Subordinated Debenture Owedto Unconsolidated Subsidiary Trust BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust	0	USD
CY2015Q2	wal	Business Combination Fair Market Value Adjustmenton Junior Subordinated Debenture Owedto Unconsolidated Subsidiary Trust BusinessCombinationFairMarketValueAdjustmentonJuniorSubordinatedDebentureOwedtoUnconsolidatedSubsidiaryTrust	-6240000	USD
	wal	Business Combination Noncash Assets Acquired At Fair Value BusinessCombinationNoncashAssetsAcquiredAtFairValue	0	USD
	wal	Business Combination Noncash Assets Acquired At Fair Value BusinessCombinationNoncashAssetsAcquiredAtFairValue	1590927000	USD
CY2014Q2	wal	Cardexpense Cardexpense	530000	USD
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CY2015Q2	wal	Cardexpense Cardexpense	613000	USD
	wal	Cardexpense Cardexpense	1087000	USD
CY2014Q2	wal	Cash Cash Equivalentsand Investment Securities CashCashEquivalentsandInvestmentSecurities	1986000000	USD
CY2014Q4	wal	Cash Cash Equivalentsand Investment Securities CashCashEquivalentsandInvestmentSecurities	1712200000	USD
CY2015Q2	wal	Cash Cash Equivalentsand Investment Securities CashCashEquivalentsandInvestmentSecurities	2290200000	USD
CY2015Q2	wal	Cash Paymentfor Vested Stock Options CashPaymentforVestedStockOptions	6200000	USD
	wal	Change In Fair Value Of Assets And Liabilities Measured At Fair Value ChangeInFairValueOfAssetsAndLiabilitiesMeasuredAtFairValue	-1041000	USD
	wal	Change In Fair Value Of Assets And Liabilities Measured At Fair Value ChangeInFairValueOfAssetsAndLiabilitiesMeasuredAtFairValue	-8194000	USD
	wal	Changein Unfunded Obligations Non Cash ChangeinUnfundedObligationsNonCash	-9506000	USD
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CY2014Q2	wal	Collateral Netted Against Derivative Liabilities CollateralNettedAgainstDerivativeLiabilities	29200000	USD
CY2014Q4	wal	Collateral Netted Against Derivative Liabilities CollateralNettedAgainstDerivativeLiabilities	57800000	USD
CY2015Q2	wal	Collateral Netted Against Derivative Liabilities CollateralNettedAgainstDerivativeLiabilities	46700000	USD
CY2015Q2	wal	Common Equity Tier One Required For Capital Adequacy CommonEquityTierOneRequiredForCapitalAdequacy	0.045
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CY2014Q2	wal	Derivative Instruments Notional Amount Netting Adjustments DerivativeInstrumentsNotionalAmountNettingAdjustments	0	USD
CY2014Q4	wal	Derivative Instruments Notional Amount Netting Adjustments DerivativeInstrumentsNotionalAmountNettingAdjustments	0	USD
CY2015Q2	wal	Derivative Instruments Notional Amount Netting Adjustments DerivativeInstrumentsNotionalAmountNettingAdjustments	0	USD
CY2014Q2	wal	Derivative Netting Adjustments DerivativeNettingAdjustments	-2000	USD
CY2014Q4	wal	Derivative Netting Adjustments DerivativeNettingAdjustments	0	USD
CY2015Q2	wal	Derivative Netting Adjustments DerivativeNettingAdjustments	0	USD
CY2014Q2	wal	Dilutive Effect Of Stock Options Restricted Stock And Equity Settled Awards DilutiveEffectOfStockOptionsRestrictedStockAndEquitySettledAwards	832000	shares
	wal	Dilutive Effect Of Stock Options Restricted Stock And Equity Settled Awards DilutiveEffectOfStockOptionsRestrictedStockAndEquitySettledAwards	850000	shares
CY2015Q2	wal	Dilutive Effect Of Stock Options Restricted Stock And Equity Settled Awards DilutiveEffectOfStockOptionsRestrictedStockAndEquitySettledAwards	505000	shares
	wal	Dilutive Effect Of Stock Options Restricted Stock And Equity Settled Awards DilutiveEffectOfStockOptionsRestrictedStockAndEquitySettledAwards	508000	shares
CY2014Q2	wal	Excess Funds Provided Used Segment Basis ExcessFundsProvidedUsedSegmentBasis	0	USD
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CY2015Q2	wal	Excess Funds Provided Used Segment Basis ExcessFundsProvidedUsedSegmentBasis	0	USD
CY2014Q4	wal	Financing Receivable Unpaid Principal Balance FinancingReceivableUnpaidPrincipalBalance	8451849000	USD
CY2015Q2	wal	Financing Receivable Unpaid Principal Balance FinancingReceivableUnpaidPrincipalBalance	10367283000	USD
CY2014Q4	wal	Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment	8135041000	USD
CY2015Q2	wal	Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment	10071590000	USD
CY2014Q2	wal	Financing Receivable Waived Fees And Other Expenses FinancingReceivableWaivedFeesAndOtherExpenses	16000	USD
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CY2014Q2	wal	Financing Receivables Impaired Troubled Debt Restructuring Write Down Due To Interest Concessions FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownDueToInterestConcessions	33000	USD
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CY2015Q2	wal	Financing Receivables Impaired Troubled Debt Restructuring Write Down Due To Interest Concessions FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownDueToInterestConcessions	0	USD
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CY2014Q2	wal	Financing Receivables Impaired Troubled Debt Restructuring Write Down Due To Principal Forgiveness FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownDueToPrincipalForgiveness	281000	USD
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CY2015Q2	wal	Financing Receivables Impaired Troubled Debt Restructuring Write Down Due To Principal Forgiveness FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownDueToPrincipalForgiveness	0	USD
	wal	Financing Receivables Impaired Troubled Debt Restructuring Write Down Due To Principal Forgiveness FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownDueToPrincipalForgiveness	0	USD
CY2013Q4	wal	Foreclosed Assets Gross ForeclosedAssetsGross	88421000	USD
CY2014Q1	wal	Foreclosed Assets Gross ForeclosedAssetsGross	72226000	USD
CY2014Q2	wal	Foreclosed Assets Gross ForeclosedAssetsGross	74643000	USD
CY2014Q4	wal	Foreclosed Assets Gross ForeclosedAssetsGross	71421000	USD
CY2015Q1	wal	Foreclosed Assets Gross ForeclosedAssetsGross	77968000	USD
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	wal	Gains Losses On Transfers To Other Real Estate And Foreclosed Assets GainsLossesOnTransfersToOtherRealEstateAndForeclosedAssets	0	USD
CY2015Q2	wal	Gains Losses On Transfers To Other Real Estate And Foreclosed Assets GainsLossesOnTransfersToOtherRealEstateAndForeclosedAssets	0	USD
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CY2014Q4	wal	Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment	179011000	USD
CY2015Q2	wal	Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment	160379000	USD
CY2014Q4	wal	Impaired Financing Receivable With No Related Allowance ImpairedFinancingReceivableWithNoRelatedAllowance	0	USD
CY2015Q2	wal	Impaired Financing Receivable With No Related Allowance ImpairedFinancingReceivableWithNoRelatedAllowance	0	USD
CY2015Q2	wal	Investmentin Low Income Housing Tax Credit InvestmentinLowIncomeHousingTaxCredit	126900000	USD
CY2014Q2	wal	Legal Professional And Director Fees LegalProfessionalAndDirectorFees	4192000	USD
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CY2015Q2	wal	Legal Professional And Director Fees LegalProfessionalAndDirectorFees	4611000	USD
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CY2014Q2	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	889000	USD
	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	2036000	USD
CY2015Q2	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	1284000	USD
	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	2374000	USD
CY2014Q2	wal	Loans And Loans Receivable Purchases LoansAndLoansReceivablePurchases	16700000	USD
	wal	Loans And Loans Receivable Purchases LoansAndLoansReceivablePurchases	32300000	USD
CY2015Q2	wal	Loans And Loans Receivable Purchases LoansAndLoansReceivablePurchases	7700000	USD
	wal	Loans And Loans Receivable Purchases LoansAndLoansReceivablePurchases	26100000	USD
CY2015Q2	wal	Loansand Leases Receivable Including Heldfor Sale Net LoansandLeasesReceivableIncludingHeldforSaleNet	10245500000	USD
CY2015Q2	wal	Loansand Leases Receivable Including Heldfor Sale Netof Deferred Income LoansandLeasesReceivableIncludingHeldforSaleNetofDeferredIncome	10360623000	USD
CY2014Q2	wal	Mark To Market Losses Gains Net MarkToMarketLossesGainsNet	235000	USD
	wal	Mark To Market Losses Gains Net MarkToMarketLossesGainsNet	-1041000	USD
CY2015Q2	wal	Mark To Market Losses Gains Net MarkToMarketLossesGainsNet	-7885000	USD
	wal	Mark To Market Losses Gains Net MarkToMarketLossesGainsNet	-8194000	USD
	wal	Maximum Loan To Value Ratio MaximumLoanToValueRatio	0.75
	wal	Maximum Period Of Internal Loss Allowance Calculation Modal MaximumPeriodOfInternalLossAllowanceCalculationModal	P10Y
CY2014Q2	wal	Merger Restructure Expense MergerRestructureExpense	26000	USD
	wal	Merger Restructure Expense MergerRestructureExpense	183000	USD
CY2015Q2	wal	Merger Restructure Expense MergerRestructureExpense	7842000	USD
	wal	Merger Restructure Expense MergerRestructureExpense	8001000	USD
CY2014Q2	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	184000	USD
	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	-2377000	USD
CY2015Q2	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	-1218000	USD
	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	-1569000	USD
CY2014Q4	wal	Non Performing Assets NonPerformingAssets	214661000	USD
CY2015Q2	wal	Non Performing Assets NonPerformingAssets	207236000	USD
CY2014Q4	wal	Non Performing Loans NonPerformingLoans	157511000	USD
CY2015Q2	wal	Non Performing Loans NonPerformingLoans	147901000	USD
CY2014Q4	wal	Number Of Securities In Unrealized Position NumberOfSecuritiesInUnrealizedPosition	109	positions
CY2015Q2	wal	Number Of Securities In Unrealized Position NumberOfSecuritiesInUnrealizedPosition	105	positions
CY2015Q2	wal	Number Of Unconsolidated Subsidiaries NumberOfUnconsolidatedSubsidiaries	8	Subsidiary
CY2015Q2	wal	Number Of Wholly Owned Subsidiaries NumberOfWhollyOwnedSubsidiaries	10	Subsidiary
	wal	Number Of Wholly Owned Subsidiaries Non Bank Subsidiaries NumberOfWhollyOwnedSubsidiariesNonBankSubsidiaries	1	Subsidiary
CY2015Q2	wal	Other Assets Acquiredthrough Foreclosure Additions Dueto Business Acquisition OtherAssetsAcquiredthroughForeclosureAdditionsDuetoBusinessAcquisition	1550000	USD
	wal	Other Assets Acquiredthrough Foreclosure Additions Dueto Business Acquisition OtherAssetsAcquiredthroughForeclosureAdditionsDuetoBusinessAcquisition	1550000	USD
CY2014Q2	wal	Other Assets Segment OtherAssetsSegment	513200000	USD
CY2014Q4	wal	Other Assets Segment OtherAssetsSegment	517200000	USD
CY2015Q2	wal	Other Assets Segment OtherAssetsSegment	575100000	USD
CY2014Q2	wal	Other Liabilities Segment OtherLiabilitiesSegment	258900000	USD
CY2014Q4	wal	Other Liabilities Segment OtherLiabilitiesSegment	278300000	USD
CY2015Q2	wal	Other Liabilities Segment OtherLiabilitiesSegment	270900000	USD
CY2014Q2	wal	Over Collateralization On Derivatives To Banks After Application Of Master Netting Agreements And Collateral OverCollateralizationOnDerivativesToBanksAfterApplicationOfMasterNettingAgreementsAndCollateral	17500000	USD
CY2014Q4	wal	Over Collateralization On Derivatives To Banks After Application Of Master Netting Agreements And Collateral OverCollateralizationOnDerivativesToBanksAfterApplicationOfMasterNettingAgreementsAndCollateral	14200000	USD
CY2015Q2	wal	Over Collateralization On Derivatives To Banks After Application Of Master Netting Agreements And Collateral OverCollateralizationOnDerivativesToBanksAfterApplicationOfMasterNettingAgreementsAndCollateral	18000000	USD
CY2014Q4	wal	Percentage Of Commercial Real Estate Loans Occupied By Owners PercentageOfCommercialRealEstateLoansOccupiedByOwners	0.46
CY2015Q2	wal	Percentage Of Commercial Real Estate Loans Occupied By Owners PercentageOfCommercialRealEstateLoansOccupiedByOwners	0.48
CY2014Q4	wal	Percentage Of Mutual Fund In Investment In Fixed Income Investment Grade PercentageOfMutualFundInInvestmentInFixedIncomeInvestmentGrade	0.80
CY2014Q2	wal	Proceeds From Sale Of Other Real Estate Owned Gross ProceedsFromSaleOfOtherRealEstateOwnedGross	1903000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Gross ProceedsFromSaleOfOtherRealEstateOwnedGross	21376000	USD
CY2015Q2	wal	Proceeds From Sale Of Other Real Estate Owned Gross ProceedsFromSaleOfOtherRealEstateOwnedGross	15415000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Gross ProceedsFromSaleOfOtherRealEstateOwnedGross	17703000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Net ProceedsFromSaleOfOtherRealEstateOwnedNet	14732000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Net ProceedsFromSaleOfOtherRealEstateOwnedNet	14375000	USD
CY2014Q2	wal	Proceeds From Sale Of Other Real Estate Owned Valuation Allowance ProceedsFromSaleOfOtherRealEstateOwnedValuationAllowance	683000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Valuation Allowance ProceedsFromSaleOfOtherRealEstateOwnedValuationAllowance	6644000	USD
CY2015Q2	wal	Proceeds From Sale Of Other Real Estate Owned Valuation Allowance ProceedsFromSaleOfOtherRealEstateOwnedValuationAllowance	2480000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Valuation Allowance ProceedsFromSaleOfOtherRealEstateOwnedValuationAllowance	3328000	USD
	wal	Proceedsfrom Sale Paymentsto Purchase Investment In Money Market ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket	1225000	USD
	wal	Proceedsfrom Sale Paymentsto Purchase Investment In Money Market ProceedsfromSalePaymentstoPurchaseInvestmentInMoneyMarket	-424000	USD
	wal	Purchase Of Investment Tax Credits PurchaseOfInvestmentTaxCredits	16948000	USD
	wal	Purchase Of Investment Tax Credits PurchaseOfInvestmentTaxCredits	11884000	USD
CY2014Q4	wal	Qualifying Debt QualifyingDebt	40437000	USD
CY2015Q2	wal	Qualifying Debt QualifyingDebt	208417000	USD
CY2014Q4	wal	Troubled Debt Restructured Loans TroubledDebtRestructuredLoans	84720000	USD
CY2015Q2	wal	Troubled Debt Restructured Loans TroubledDebtRestructuredLoans	80192000	USD
	wal	Unfunded Commitments To Purchase Investment Tax Credits UnfundedCommitmentsToPurchaseInvestmentTaxCredits	12298000	USD
	wal	Unfunded Commitments To Purchase Investment Tax Credits UnfundedCommitmentsToPurchaseInvestmentTaxCredits	2168000	USD
CY2015Q2	wal	Unfunded Low Income Housing Tax Credit Obligations UnfundedLowIncomeHousingTaxCreditObligations	43800000	USD
CY2014Q2	wal	Valuation Adjustments Of Other Repossessed Assets Net ValuationAdjustmentsOfOtherRepossessedAssetsNet	-258000	USD
	wal	Valuation Adjustments Of Other Repossessed Assets Net ValuationAdjustmentsOfOtherRepossessedAssetsNet	-293000	USD
CY2015Q2	wal	Valuation Adjustments Of Other Repossessed Assets Net ValuationAdjustmentsOfOtherRepossessedAssetsNet	-718000	USD
	wal	Valuation Adjustments Of Other Repossessed Assets Net ValuationAdjustmentsOfOtherRepossessedAssetsNet	-1504000	USD
CY2014Q2	wal	Valuation Adjustments Of Other Repossessed Assets Valuation Allowance ValuationAdjustmentsOfOtherRepossessedAssetsValuationAllowance	258000	USD
	wal	Valuation Adjustments Of Other Repossessed Assets Valuation Allowance ValuationAdjustmentsOfOtherRepossessedAssetsValuationAllowance	293000	USD
CY2015Q2	wal	Valuation Adjustments Of Other Repossessed Assets Valuation Allowance ValuationAdjustmentsOfOtherRepossessedAssetsValuationAllowance	-718000	USD
	wal	Valuation Adjustments Of Other Repossessed Assets Valuation Allowance ValuationAdjustmentsOfOtherRepossessedAssetsValuationAllowance	1504000	USD
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Reclassifications</font></div><div style="line-height:120%;padding-top:12px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain amounts in the Consolidated Financial Statements as of </font><font style="font-family:inherit;font-size:10pt;">December 31, 2014</font><font style="font-family:inherit;font-size:10pt;"> and for the </font><font style="font-family:inherit;font-size:10pt;">three and six</font><font style="font-family:inherit;font-size:10pt;"> months ended </font><font style="font-family:inherit;font-size:10pt;">June 30, 2014</font><font style="font-family:inherit;font-size:10pt;"> may have been reclassified to conform to the current presentation. The reclassifications have no effect on net income or stockholders’ equity as previously reported.</font></div></div>
	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Use of estimates</font></div><div style="line-height:120%;padding-top:12px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes in the near term relate to the determination of the allowance for credit losses; estimated cash flows related to PCI loans; fair value determinations related to acquisitions and other assets and liabilities carried at fair value; and accounting for income taxes. Although management believes these estimates to be reasonably accurate, actual amounts may differ. In the opinion of management, all adjustments considered necessary have been reflected in the Unaudited Consolidated Financial Statements.</font></div></div>

Files In Submission

Name	View Source	Status
0001212545-15-000188-index-headers.html	Edgar Link	pending
0001212545-15-000188-index.html	Edgar Link	pending
0001212545-15-000188.txt	Edgar Link	pending
0001212545-15-000188-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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wal-20150630.xml	Edgar Link	completed
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wal630201510q.htm	Edgar Link	pending
walex31110q6302015.htm	Edgar Link	pending
walex31210q6302015.htm	Edgar Link	pending
walex3210q6302015.htm	Edgar Link	pending

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$WAL
WESTERN ALLIANCE BANCORPORATION Stock $wal

2015 Q2 Form 10-Q Financial Statement

#000121254515000188 Filed on August 07, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WAL WESTERN ALLIANCE BANCORPORATION Stock $wal

2015 Q2 Form 10-Q Financial Statement

#000121254515000188 Filed on August 07, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WAL
WESTERN ALLIANCE BANCORPORATION Stock $wal