$WAL
WESTERN ALLIANCE BANCORPORATION Stock $wal

$wal Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-Q Financial Statement

#000119312512449418 Filed on November 02, 2012

Income Statement

Concept	2012 Q4	2012 Q3	2011 Q3
Revenue	$84.34M	$78.67M	$74.13M
YoY Change	9.76%	6.12%
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	-$1.000M	$2.400M	$2.700M
YoY Change	-140.0%	-11.11%	-25.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$6.888M	$6.723M	$9.548M
YoY Change	-15.45%	-29.59%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$41.43M	$22.45M	$21.01M
YoY Change	331.18%	6.89%	707.92%
Income Tax	$7.509M	$6.752M	$7.514M
% Of Pretax Income	18.13%	30.07%	35.77%
Net Earnings	$32.12M	$15.46M	$13.01M
YoY Change	352.26%	18.81%	550.55%
Net Earnings / Revenue	38.08%	19.65%	17.55%
Basic Earnings Per Share	$0.38	$0.18	$0.04
Diluted Earnings Per Share	$0.37	$0.18	$0.04
COMMON SHARES
Basic Shares Outstanding	86.42M shares	81.76M shares	80.93M shares
Diluted Shares Outstanding		82.29M shares	81.13M shares

Balance Sheet

Concept	2012 Q4	2012 Q3	2011 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.441B	$1.641B
YoY Change	-12.06%
Cash & Equivalents	$204.6M	$307.9M	$306.0M
Short-Term Investments	$1.236B	$1.333B
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$107.9M	$106.9M	$106.0M
YoY Change	2.24%	0.85%	-9.4%
Goodwill	$23.22M	$23.22M
YoY Change	-10.42%
Intangibles	$6.539M	$5.764M
YoY Change	-33.32%
Long-Term Investments
YoY Change
Other Assets	$52.00M	$37.00M	$63.00M
YoY Change	-16.13%	-41.27%	-10.0%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$7.623B	$7.404B	$6.546B
YoY Change	11.37%	13.1%	5.94%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$120.0M	$435.0M	$216.0M
YoY Change	-74.84%	101.39%	35.0%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$273.0M	$435.0M	$216.0M
YoY Change	-42.77%	101.39%	35.0%
LONG-TERM LIABILITIES
Long-Term Debt	$73.72M	$36.00M	$36.00M
YoY Change	99.24%	0.0%	0.0%
Other Long-Term Liabilities	$99.00M	$72.00M	$29.00M
YoY Change	182.86%	148.28%	-17.14%
Total Long-Term Liabilities	$73.72M	$108.0M	$65.00M
YoY Change	2.38%	66.15%	-8.45%
TOTAL LIABILITIES
Total Short-Term Liabilities	$273.0M	$435.0M	$216.0M
Total Long-Term Liabilities	$73.72M	$108.0M	$65.00M
Total Liabilities	$6.863B	$6.706B	$5.914B
YoY Change	10.55%	13.39%	6.39%
SHAREHOLDERS EQUITY
Retained Earnings	-$174.5M	-$206.2M
YoY Change	-28.35%
Common Stock	$9.000K	$8.000K
YoY Change	12.5%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$759.4M	$698.0M	$632.0M
YoY Change
Total Liabilities & Shareholders Equity	$7.623B	$7.404B	$6.546B
YoY Change	11.37%	13.1%	5.94%

Cashflow Statement

Concept	2012 Q4	2012 Q3	2011 Q3
OPERATING ACTIVITIES
Net Income	$32.12M	$15.46M	$13.01M
YoY Change	352.26%	18.81%	550.55%
Depreciation, Depletion And Amortization	-$1.000M	$2.400M	$2.700M
YoY Change	-140.0%	-11.11%	-25.0%
Cash From Operating Activities	$71.50M	$5.400M	$27.40M
YoY Change	114.07%	-80.29%	-232.37%
INVESTING ACTIVITIES
Capital Expenditures	-$2.600M	-$1.500M
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$186.0M	-$81.60M	-$293.8M
YoY Change	-60.32%	-72.23%	108.81%
Cash From Investing Activities	-$188.5M	-$83.20M	-$293.8M
YoY Change	-59.79%	-71.68%	108.81%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	13.80M	206.8M	37.80M
YoY Change	-95.15%	447.09%	-82.56%
NET CHANGE
Cash From Operating Activities	71.50M	5.400M	27.40M
Cash From Investing Activities	-188.5M	-83.20M	-293.8M
Cash From Financing Activities	13.80M	206.8M	37.80M
Net Change In Cash	-103.2M	129.0M	-228.6M
YoY Change	-31.61%	-156.43%	-512.64%
FREE CASH FLOW
Cash From Operating Activities	$71.50M	$5.400M	$27.40M
Capital Expenditures	-$2.600M	-$1.500M
Free Cash Flow	$74.10M	$6.900M
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2012Q2	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts FinancingReceivableModificationsSubsequentDefaultNumberOfContracts	13	Contract
CY2012Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	97512000
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CY2012Q3	wal	Advances For Carrying Value AdvancesForCarryingValue	150000000
CY2012Q3	wal	Advances For Fair Value AdvancesForFairValue	150000000
CY2012Q3	wal	Arps At Carrying Value ArpsAtCarryingValue	3100000
CY2012Q3	wal	Credit Card Loans Held Under Loans Held For Investment CreditCardLoansHeldUnderLoansHeldForInvestment	33500000
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	134162000
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	19216000
CY2011Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	290035000
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-4593000
CY2011Q4	us-gaap	Marketable Securities MarketableSecurities	1483158000
CY2011Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1558211000
CY2012Q3	wal	Credit Rating Agency At Carrying Value CreditRatingAgencyAtCarryingValue	24300000
CY2012Q3	wal	Financing Receivable Allowance For Credit Losses Partial Write Offs FinancingReceivableAllowanceForCreditLossesPartialWriteOffs	35646000
CY2012Q3	wal	Investment Ratings Position InvestmentRatingsPosition	1304168000
CY2012Q3	wal	Junior Subordinated Debt At Fair Value JuniorSubordinatedDebtAtFairValue	36218000
CY2012Q3	wal	Loss Contingency For Letters Of Credit LossContingencyForLettersOfCredit	1600000
CY2012Q3	wal	Money Market Investments MoneyMarketInvestments	5766000
CY2012Q3	wal	Number Of Securities In Unrealized Position NumberOfSecuritiesInUnrealizedPosition	51	shares
CY2012Q3	wal	Other Securities At Carrying Value OtherSecuritiesAtCarryingValue	1500000
CY2012Q3	wal	Outstanding Stock Options Excluded From Earnings Per Share Computation OutstandingStockOptionsExcludedFromEarningsPerShareComputation	1057116	shares
CY2012Q3	wal	Percentage Of Commercial Real Estate Loans Occupied By Owners PercentageOfCommercialRealEstateLoansOccupiedByOwners	0.49	pure
CY2012Q3	wal	Percentage Of Loans Considered Unsecured PercentageOfLoansConsideredUnsecured	0.04	pure
CY2012Q3	wal	Percent Of Commercial Real Estate Related Loans PercentOfCommercialRealEstateRelatedLoans	0.58	pure
CY2012Q3	wal	Percent Of Commercial Real Estate Related Loans Secured By Undeveloped Land PercentOfCommercialRealEstateRelatedLoansSecuredByUndevelopedLand	0.02	pure
CY2012Q3	wal	Percentage Of Investment To Be Sold PercentageOfInvestmentToBeSold	0.80	pure
CY2012Q3	wal	Future Unconditional Equity Commitments FutureUnconditionalEquityCommitments	34600000
CY2012Q3	wal	Interest Margin Outstanding InterestMarginOutstanding	138300000
CY2012Q3	wal	Combined Assets After Merger CombinedAssetsAfterMerger	3090000000
CY2012Q3	wal	Combined Deposits After Merger CombinedDepositsAfterMerger	2550000000
CY2010Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	107655000
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	216746000
CY2010Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	110699000
CY2010Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	-1811000
CY2011Q1	wal	Taxable Income Adjustment TaxableIncomeAdjustment	136700000
CY2011Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1198185000
CY2011Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	209491000
CY2011Q4	us-gaap	Other Assets OtherAssets	42093000
CY2011Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	38129000
CY2011Q4	us-gaap	Held To Maturity Securities Unrecognized Holding Loss HeldToMaturitySecuritiesUnrecognizedHoldingLoss	2061000
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	135420000
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2	19216000
CY2011Q4	us-gaap	Other Borrowings OtherBorrowings	353321000
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000000	shares
CY2011Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	85705000
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	20445000
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	114098000
CY2011Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	1190385000
CY2011Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	99170000
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	8093000
CY2011Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000000	shares
CY2011Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	89104000
CY2011Q4	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Face Amount Liability FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability	1217780000
CY2011Q4	us-gaap	Trading Securities TradingSecurities	6515000
CY2011Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	59000
CY2011Q4	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	5660518000
CY2011Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	286258000
CY2011Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	4100301000
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	855828000
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-243512000
CY2011Q4	us-gaap	Assets Assets	6844541000
CY2011Q4	us-gaap	Deposits Deposits	5658512000
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	13227000
CY2011Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	10377000
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	41432000
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	154995000
CY2011Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	946000
CY2011Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	7600000
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	61724000
CY2011Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	12775000
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	69296000
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Short Term FederalHomeLoanBankAdvancesShortTerm	280000000
CY2011Q4	us-gaap	Loans Receivable Held For Sale Net LoansReceivableHeldForSaleNet	0
CY2011Q4	us-gaap	Securities Loaned Or Sold Under Agreements To Repurchase Fair Value Disclosure SecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure	123626000
CY2011Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	11006000
CY2011Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	2589000
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	116347000
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	20635000
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2	11682000
CY2011Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	4680899000
CY2011Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	123626000
CY2011Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	16470000
CY2011Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1486935000
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6844541000
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	82361655000	shares
CY2011Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	28631000
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	20200000
CY2011Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	1000
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	8000
CY2011Q4	us-gaap	Restricted Investments RestrictedInvestments	33520000
CY2011Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	141000000	shares
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount	286258000
CY2011Q4	us-gaap	Goodwill Goodwill	25925000
CY2011Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	1198185000
CY2011Q4	us-gaap	Liabilities Liabilities	6207858000
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	88793000
CY2011Q4	us-gaap	Other Liabilities OtherLiabilities	35414000
CY2011Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	9807000
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	52815000
CY2011Q4	us-gaap	Derivative Assets DerivativeAssets	1729000
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2	7534000
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	180949000
CY2011Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	244680000
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	1500000
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue	45515000
CY2011Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	161621000
CY2011Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	85705000
CY2011Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	141000000	shares
CY2011Q4	us-gaap	Preferred Stock Value PreferredStockValue	141000000
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	134935000
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	105546000
CY2011Q4	us-gaap	Heldtomaturity Securities Unrecognized Holding Gain HeldtomaturitySecuritiesUnrecognizedHoldingGain	5838000
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	166344000
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	1500000
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	90392000
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	53399000
CY2011Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	116866000
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	82361655000	shares
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	864584000
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	8389000
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses Acquired With Deteriorated Credit Quality FinancingReceivableAllowanceForCreditLossesAcquiredWithDeterioratedCreditQuality
CY2011Q4	us-gaap	Derivative Financial Instruments Liabilities Fair Value Disclosure DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure	946000
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	1198185000
CY2011Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	4420006000
CY2011Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Aggregate Losses HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAggregateLosses	2061000
CY2011Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Other Debt Securities Available For Sale Or Held For Investment PledgedFinancialInstrumentsNotSeparatelyReportedOtherDebtSecuritiesAvailableForSaleOrHeldForInvestment	675000000
CY2011Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	4780069000
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	99170000
CY2011Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	743780000
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	114748000
CY2011Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	133898000
CY2011Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	75000000
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities Fair Value HeldToMaturitySecuritiesDebtMaturitiesFairValue	290035000
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2011Q4	us-gaap	Foreclosed Assets ForeclosedAssets	89104000
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	139517000
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	636683000
CY2011Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	180860000
CY2011Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	10377000
CY2011Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	154995000
CY2011Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	36985000
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	4717840000
CY2011Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	-1811000
CY2011Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	2061000
CY2011Q4	us-gaap	Notes Receivable Net NotesReceivableNet	4787136000
CY2011Q4	wal	Other Borrowings Fair Value Disclosure OtherBorrowingsFairValueDisclosure	78375000
CY2011Q4	wal	Other Long Term Borrowings OtherLongTermBorrowings	73321000
CY2011Q4	wal	Unrealized Loss Pooled Trust Preferred Securities UnrealizedLossPooledTrustPreferredSecurities	10900000
CY2011Q4	wal	Troubled Debt Restructured Loans TroubledDebtRestructuredLoans	112483000
CY2011Q4	wal	Non Performing Assets NonPerformingAssets	294568000
CY2011Q4	wal	Non Performing Loans NonPerformingLoans	205464000
CY2011Q4	wal	Loan Commitments Outstanding LoanCommitmentsOutstanding	200000
CY2011Q4	wal	Advances For Carrying Value AdvancesForCarryingValue	280000000
CY2011Q4	wal	Advances For Fair Value AdvancesForFairValue	280000000
CY2011Q4	wal	Arps At Carrying Value ArpsAtCarryingValue	1000000
CY2011Q4	wal	Credit Card Loans Held Under Loans Held For Investment CreditCardLoansHeldUnderLoansHeldForInvestment	38900000
CY2011Q4	wal	Credit Rating Agency At Carrying Value CreditRatingAgencyAtCarryingValue	23500000
CY2011Q4	wal	Financing Receivable Allowance For Credit Losses Partial Write Offs FinancingReceivableAllowanceForCreditLossesPartialWriteOffs	35189000
CY2011Q4	wal	Held To Maturity At Carrying Value HeldToMaturityAtCarryingValue	10000000
CY2011Q4	wal	Investment Ratings Position InvestmentRatingsPosition	1447123000
CY2011Q4	wal	Junior Subordinated Debt At Fair Value JuniorSubordinatedDebtAtFairValue	36985000
CY2011Q4	wal	Loss Contingency For Letters Of Credit LossContingencyForLettersOfCredit	1100000
CY2011Q4	wal	Money Market Investments MoneyMarketInvestments	7343000
CY2011Q4	wal	Number Of Securities In Unrealized Position NumberOfSecuritiesInUnrealizedPosition	106	shares
CY2011Q4	wal	Other Securities At Carrying Value OtherSecuritiesAtCarryingValue	1500000
CY2011Q4	wal	Outstanding Stock Options Excluded From Earnings Per Share Computation OutstandingStockOptionsExcludedFromEarningsPerShareComputation	2092932	shares
CY2011Q4	wal	Percentage Of Commercial Real Estate Loans Occupied By Owners PercentageOfCommercialRealEstateLoansOccupiedByOwners	0.49	pure
CY2011Q4	wal	Percentage Of Loans Considered Unsecured PercentageOfLoansConsideredUnsecured	0.04	pure
CY2011Q4	wal	Percent Of Commercial Real Estate Related Loans PercentOfCommercialRealEstateRelatedLoans	0.61	pure
CY2011Q4	wal	Percent Of Commercial Real Estate Related Loans Secured By Undeveloped Land PercentOfCommercialRealEstateRelatedLoansSecuredByUndevelopedLand	0.02	pure
	wal	Financing Receivable Modification Recorded Investment FinancingReceivableModificationRecordedInvestment	7687000
	wal	Financing Receivable Modification Number Of Contracts In Payment Default FinancingReceivableModificationNumberOfContractsInPaymentDefault	15	Contract
	wal	Financing Receivable Modification Recorded Investment FinancingReceivableModificationRecordedInvestment	30477000
	wal	Financing Receivable Modification Number Of Contracts In Payment Default FinancingReceivableModificationNumberOfContractsInPaymentDefault	32	Contract
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	33112000
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	14425000
	us-gaap	Loans And Leases Receivable Commitments To Purchase Or Sell LoansAndLeasesReceivableCommitmentsToPurchaseOrSell	64300000
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	990000
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	22428000
	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	2178000
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-13456000
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	211033000
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-343625000
	us-gaap	Additions To Other Assets Amount AdditionsToOtherAssetsAmount	28194000
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80870000	shares
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.02
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-1500000
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	125995000
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	194341000
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	5399000
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10196000
	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	263000
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	219745000
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	40731000
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	6229000
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment
	us-gaap	Interest Paid InterestPaid	33560000
	us-gaap	Reductions In Other Assets Amount ReductionsInOtherAssetsAmount	35601000
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	25893000
	us-gaap	Share Based Compensation ShareBasedCompensation	3102000
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-173000
	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	346000
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	251000	shares
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	8083000
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	89222000
	us-gaap	Marketing Expense MarketingExpense	3382000
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	235946000
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	-2020000
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	6991000
	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	5946000
	us-gaap	Income Tax Expense Benefit Continuing Operations Discontinued Operations Extraordinary Items IncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsExtraordinaryItems	-1086000
	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	189000
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	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	453984000
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold
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	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	4195000
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	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	267000
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	7603000
	us-gaap	General Insurance Expense GeneralInsuranceExpense	8878000
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	5252000
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-5693000
	us-gaap	Net Income Loss NetIncomeLoss	24393000
	us-gaap	Noninterest Income NoninterestIncome	29509000
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	2671000
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Writedown Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForWritedownOfSecuritiesIncludedInNetIncomeNetOfTax	144000
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	81121000	shares
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	323734000
	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	4826000
	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	5172000
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	30870000
	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	-189000
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	155857000
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	188969000
	us-gaap	Interest Expense Debt InterestExpenseDebt	766000
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14838000
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	22000
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	9376000
	us-gaap	Proceeds From Repayments Of Debt ProceedsFromRepaymentsOfDebt	33177000
	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Trading Revenue FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInTradingRevenue	6690000
	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	141000000
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	294447000
	us-gaap	Noninterest Expense NoninterestExpense	144635000
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows
	us-gaap	Proceeds From Loan And Lease Originations And Principal Collections1 ProceedsFromLoanAndLeaseOriginationsAndPrincipalCollections1	-356565000
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	13879000
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	9968000
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.14
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2669000
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	200000
	us-gaap	Occupancy Net OccupancyNet	15024000
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	618430000
	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4100000
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	69119000
	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	640000
	us-gaap	Interest Expense InterestExpense	30776000
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	109113000
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	50586000
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-3043000
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.14
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	4826000
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	21737000
	wal	Redemption Of Preferred Stock RedemptionOfPreferredStock	140000000
	wal	Reduction In Interest Income ReductionInInterestIncome	4600000
	wal	Financing Receivable Modification Number Of Contracts FinancingReceivableModificationNumberOfContracts	103	Contract
	wal	Financing Receivable Modification Post Modification Recorded Investment FinancingReceivableModificationPostModificationRecordedInvestment	75037000
	wal	Financing Receivable Modification Pre Modification Recorded Investment FinancingReceivableModificationPreModificationRecordedInvestment	80812000
	wal	Affinity Credit Card Revenue AffinityCreditCardRevenue	1133000
	wal	Amount Of Impairment Losses Reclassified Out Of Accumulated Other Comprehensive Income Into Earnings AmountOfImpairmentLossesReclassifiedOutOfAccumulatedOtherComprehensiveIncomeIntoEarnings	-226000
	wal	Change In Fair Value Of Assets And Liabilities Measured At Fair Value ChangeInFairValueOfAssetsAndLiabilitiesMeasuredAtFairValue	6247000
	wal	Customer Service CustomerService	2620000
	wal	Dividend Income Operating Non Taxable DividendIncomeOperatingNonTaxable	1965000
	wal	Dividend Income Operating Taxable DividendIncomeOperatingTaxable	859000
	wal	Financing Receivable Forgiven Principal Balance FinancingReceivableForgivenPrincipalBalance	2010000
	wal	Financing Receivable Waived Fees And Other Expenses FinancingReceivableWaivedFeesAndOtherExpenses	640000
	wal	Income Tax Benefit Related To Impairment Losses IncomeTaxBenefitRelatedToImpairmentLosses	82000
	wal	Investment In Money Market InvestmentInMoneyMarket	23431000
	wal	Legal Professional And Director Fees LegalProfessionalAndDirectorFees	5639000
	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	6465000
	wal	Mark To Market Losses Gains Net MarkToMarketLossesGainsNet	6247000
	wal	Net Gains And Losses Recognized On Trading Securities NetGainsAndLossesRecognizedOnTradingSecurities	1000
	wal	Net Gains And Losses Recognized On Trading Securities Sold NetGainsAndLossesRecognizedOnTradingSecuritiesSold	190000
	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	16890000
	wal	Other Real Estate And Foreclosed Assets Valuation Adjustment OtherRealEstateAndForeclosedAssetsValuationAdjustment	-13556000
	wal	Other Than Temporary Impairment Losses Investments OtherThanTemporaryImpairmentLossesInvestments	226000
	wal	Principal Pay Downs And Maturities Of Securities Measured At Fair Value PrincipalPayDownsAndMaturitiesOfSecuritiesMeasuredAtFairValue	4465000
	wal	Proceeds From Issuance Of Common Stock Options And Stock Warrants ProceedsFromIssuanceOfCommonStockOptionsAndStockWarrants	362000
	wal	Proceeds From Sale Of Other Real Estate Owned Net ProceedsFromSaleOfOtherRealEstateOwnedNet	31794000
	wal	Proceeds From Sale Of Securities Measured At Fair Value ProceedsFromSaleOfSecuritiesMeasuredAtFairValue	2907000
	wal	Sale Of Premises And Equipment Net SaleOfPremisesAndEquipmentNet	711000
	wal	Sale Of Repossessed Assets Net SaleOfRepossessedAssetsNet	16179000
	wal	Service Charges And Fees Net ServiceChargesAndFeesNet	6864000
	wal	Transfers To Other Assets Acquired Through Foreclosure Net TransfersToOtherAssetsAcquiredThroughForeclosureNet	27011000
	wal	Weighted Average Interest Rates WeightedAverageInterestRates	0.1139	pure
	wal	Merger Restructure Expense MergerRestructureExpense	1082000
	wal	Non Interest Expense Related To Discontinued Affinity Credit Card NonInterestExpenseRelatedToDiscontinuedAffinityCreditCard	3719000
	wal	Financing Receivables Impaired Troubled Debt Restructuring Write Down Due To Interest Concessions FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownDueToInterestConcessions	3765000
	wal	Income Loss From Discontinuing Operations Per Basic Share IncomeLossFromDiscontinuingOperationsPerBasicShare	-0.02
	wal	Interest Expense Junior Subordinated Debt InterestExpenseJuniorSubordinatedDebt	1856000
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
	dei	Document Type DocumentType	10-Q
	dei	Document Period End Date DocumentPeriodEndDate	2012-09-30
	dei	Entity Central Index Key EntityCentralIndexKey	0001212545
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Trading Symbol TradingSymbol	WAL
	dei	Entity Registrant Name EntityRegistrantName	WESTERN ALLIANCE BANCORPORATION
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	35343000
	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	3435000
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	3440000
	us-gaap	Loans And Leases Receivable Commitments To Purchase Or Sell LoansAndLeasesReceivableCommitmentsToPurchaseOrSell	132300000
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2715000
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	12904000
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div> <p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b><i>Reclassifications</i></b></font></p> <p style="MARGIN-TOP: 6px; MARGIN-BOTTOM: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">Certain amounts in the consolidated financial statements as of December 31, 2011 and for the three and nine months ended September 30, 2011 have been reclassified to conform to the current presentation. The reclassifications have no effect on net income or stockholders’ equity as previously reported.</font></p> </div>
	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	676000
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	29127000
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	215811000
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-396590000
	us-gaap	Additions To Other Assets Amount AdditionsToOtherAssetsAmount	20288000
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	81570000	shares
	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 Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-686000
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	205682000
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	5374000
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10839000
	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	158000
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	233952000
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	57857000
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	6624000
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment
	us-gaap	Interest Paid InterestPaid	22263000
	us-gaap	Reductions In Other Assets Amount ReductionsInOtherAssetsAmount	27346000
	us-gaap	Fair Value Measurements Valuation Techniques FairValueMeasurementsValuationTechniques	Discounted cash flow
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	41405000
	us-gaap	Share Based Compensation ShareBasedCompensation	4725000
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-148000
	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	284000
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	589000	shares
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	7319000
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	152922000
	us-gaap	Marketing Expense MarketingExpense	4061000
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	304428000
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	5951000
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	7521000
	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-270000
	us-gaap	Income Tax Expense Benefit Continuing Operations Discontinued Operations Extraordinary Items IncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsExtraordinaryItems	-497000
	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	10000
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	262000
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	143553000
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-1183000
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3359000
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	16703000
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.46
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	7491000
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	7397000
	us-gaap	General Insurance Expense GeneralInsuranceExpense	6323000
	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	776000
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	3440000
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-8027000
	us-gaap	Net Income Loss NetIncomeLoss	40719000
	us-gaap	Cash Flow Hedge Gain Loss Reclassified To Revenue Net CashFlowHedgeGainLossReclassifiedToRevenueNet	519000
	us-gaap	Noninterest Income NoninterestIncome	20263000
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.45
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3678000
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	82159000	shares
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	460368000
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	3445000
	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	2502000
	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	2786000
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	57422000
	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	-66000
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	177465000
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	212808000
	us-gaap	Interest Expense Debt InterestExpenseDebt	981000
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16452000
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	10000
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	18803000
	us-gaap	Proceeds From Repayments Of Debt ProceedsFromRepaymentsOfDebt	-42276000
	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Trading Revenue FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInTradingRevenue	701000
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	706922	shares
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	503464000
	us-gaap	Noninterest Expense NoninterestExpense	139871000
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows
	us-gaap	Proceeds From Loan And Lease Originations And Principal Collections1 ProceedsFromLoanAndLeaseOriginationsAndPrincipalCollections1	-612929000
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	16125000
	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	-6000
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	37279000
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.46
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2660000
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	0
	us-gaap	Occupancy Net OccupancyNet	14046000
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	277619000
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1290000
	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4400000
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	78159000
	us-gaap	Use Of Estimates UseOfEstimates	<div> <p style="MARGIN-TOP: 18px; MARGIN-BOTTOM: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b><i>Use of estimates</i></b></font></p> <p style="MARGIN-TOP: 6px; MARGIN-BOTTOM: 0px"><font style="FONT-FAMILY: Times New Roman" size="2">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; fair value of other real estate owned; determination of the valuation allowance related to deferred tax assets; impairment of goodwill and other intangible assets and other than temporary impairment on securities. 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 financial statements during their preparation.</font></p> </div>
	us-gaap	Business Acquisition Effective Date Of Acquisition1 BusinessAcquisitionEffectiveDateOfAcquisition1	2012-10-17
	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	735000
	us-gaap	Interest Expense InterestExpense	21144000
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses
	us-gaap	Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued	2966236	shares
	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2600000
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	89144000
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	44624000
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-1598000
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.47
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	2502000
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	17522000
	wal	Reduction In Interest Income ReductionInInterestIncome	4100000
	wal	Amortization Of Equity Method Investment Assets AmortizationOfEquityMethodInvestmentAssets	710000
	wal	Financing Receivable Modification Number Of Contracts FinancingReceivableModificationNumberOfContracts	71	Contract
	wal	Financing Receivable Modification Post Modification Recorded Investment FinancingReceivableModificationPostModificationRecordedInvestment	76476000
	wal	Financing Receivable Modification Pre Modification Recorded Investment FinancingReceivableModificationPreModificationRecordedInvestment	79956000
	wal	Number Of Wholly Owned Subsidiaries NumberOfWhollyOwnedSubsidiaries	10	Subsidiary
	wal	Affinity Credit Card Revenue AffinityCreditCardRevenue	947000
	wal	Change In Fair Value Of Assets And Liabilities Measured At Fair Value ChangeInFairValueOfAssetsAndLiabilitiesMeasuredAtFairValue	701000
	wal	Customer Service CustomerService	1926000
	wal	Decreased Deferred Tax Assets Liabilities Net DecreasedDeferredTaxAssetsLiabilitiesNet	25100000
	wal	Dividend Income Operating Non Taxable DividendIncomeOperatingNonTaxable	2096000
	wal	Dividend Income Operating Taxable DividendIncomeOperatingTaxable	899000
	wal	Fair Value Input Value FairValueInputValue	0.06530	pure
	wal	Financing Receivable Forgiven Principal Balance FinancingReceivableForgivenPrincipalBalance	1230000
	wal	Financing Receivable Waived Fees And Other Expenses FinancingReceivableWaivedFeesAndOtherExpenses	146000
	wal	Investment In Money Market InvestmentInMoneyMarket	1577000
	wal	Legal Professional And Director Fees LegalProfessionalAndDirectorFees	6380000
	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	4573000
	wal	Mark To Market Losses Gains Net MarkToMarketLossesGainsNet	701000
	wal	Maximum Loan To Value Ratio MaximumLoanToValueRatio	0.75	pure
	wal	Maximum Period Of Internal Loss Allowance Calculation Modal MaximumPeriodOfInternalLossAllowanceCalculationModal	P3Y
	wal	Minimum Period Of Internal Loss Allowance Calculation Modal MinimumPeriodOfInternalLossAllowanceCalculationModal	P1Y
	wal	Net Gains And Losses Recognized On Trading Securities NetGainsAndLossesRecognizedOnTradingSecurities	-66000
	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	3678000
	wal	Number Of Unconsolidated Subsidiaries NumberOfUnconsolidatedSubsidiaries	6	Subsidiary
	wal	Other Real Estate And Foreclosed Assets Valuation Adjustment OtherRealEstateAndForeclosedAssetsValuationAdjustment	-3812000
	wal	Percentage Of Interest Held By Company In Registered Investment Advisor PercentageOfInterestHeldByCompanyInRegisteredInvestmentAdvisor	0.80	pure
	wal	Principal Pay Downs And Maturities Of Securities Measured At Fair Value PrincipalPayDownsAndMaturitiesOfSecuritiesMeasuredAtFairValue	954000
	wal	Proceeds From Issuance Of Common Stock Options And Stock Warrants ProceedsFromIssuanceOfCommonStockOptionsAndStockWarrants	2620000
	wal	Proceeds From Sale Of Other Real Estate Owned Net ProceedsFromSaleOfOtherRealEstateOwnedNet	26640000
	wal	Purchase Of Investment Tax Credits PurchaseOfInvestmentTaxCredits	-17901000
	wal	Sale Of Loans SaleOfLoans	0
	wal	Sale Of Premises And Equipment Net SaleOfPremisesAndEquipmentNet	-64000
	wal	Sale Of Repossessed Assets Net SaleOfRepossessedAssetsNet	3742000
	wal	Weighted Average Interest Rates WeightedAverageInterestRates	0.1081	pure
	wal	Merger Restructure Expense MergerRestructureExpense	113000
	wal	Non Interest Expense Related To Discontinued Affinity Credit Card NonInterestExpenseRelatedToDiscontinuedAffinityCreditCard	2130000
	wal	Service Charges And Fees Net ServiceChargesAndFeesNet	7014000
	wal	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Option Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionGrantsInPeriodWeightedAverageGrantDateFairValue	5700000
	wal	Transfers To Other Assets Acquired Through Foreclosure Net TransfersToOtherAssetsAcquiredThroughForeclosureNet	19512000
	wal	Unfunded Commitments To Purchase Investment Tax Credits UnfundedCommitmentsToPurchaseInvestmentTaxCredits	34599000
	wal	Unrealized Gain On Cash Flow Hedge Net UnrealizedGainOnCashFlowHedgeNet	17000
	wal	Financing Receivables Impaired Troubled Debt Restructuring Write Down Due To Interest Concessions FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownDueToInterestConcessions	2250000
	wal	Income Loss From Discontinuing Operations Per Basic Share IncomeLossFromDiscontinuingOperationsPerBasicShare	-0.01
	wal	Interest Expense Junior Subordinated Debt InterestExpenseJuniorSubordinatedDebt	1458000
	wal	Decrease In Interest Margin Basis Points DecreaseInInterestMarginBasisPoints	Five basis points
CY2010Q3	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	72800000
CY2011	us-gaap	Fair Value Measurements Valuation Techniques FairValueMeasurementsValuationTechniques	Discounted cash flow
CY2011	wal	Increase Decrease In Net Provision For Allowance For Doubtful Accounts IncreaseDecreaseInNetProvisionForAllowanceForDoubtfulAccounts	2600000
CY2011	wal	Fair Value Input Value FairValueInputValue	0.06989	pure
CY2011	wal	Maximum Loan To Value Ratio MaximumLoanToValueRatio	0.75	pure
CY2011Q2	wal	Financing Receivable Modification Recorded Investment FinancingReceivableModificationRecordedInvestment	2779000
CY2011Q2	wal	Financing Receivable Modification Number Of Contracts In Payment Default FinancingReceivableModificationNumberOfContractsInPaymentDefault	6	Contract
CY2012Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	2000000	shares
CY2012Q2	wal	Financing Receivable Modification Recorded Investment FinancingReceivableModificationRecordedInvestment	11276000
CY2012Q2	wal	Maximum Number Of Shares Of Stock That Can Be Awarded To Any Person Eligible MaximumNumberOfSharesOfStockThatCanBeAwardedToAnyPersonEligible	300000	shares
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CY2011Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	198273000
CY2011Q3	us-gaap	Additions To Other Assets Amount AdditionsToOtherAssetsAmount	7139000
CY2011Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80931000	shares
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-481000
CY2011Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	65540000
CY2011Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	2098000
CY2011Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	3524000
CY2011Q3	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	77000
CY2011Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	74133000
CY2011Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	21006000
CY2011Q3	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	2024000
CY2011Q3	us-gaap	Reductions In Other Assets Amount ReductionsInOtherAssetsAmount	4291000
CY2011Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	13492000
CY2011Q3	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	325000
CY2011Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	194000	shares
CY2011Q3	us-gaap	Marketing Expense MarketingExpense	1090000
CY2011Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2558000
CY2011Q3	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	6157000
CY2011Q3	us-gaap	Income Tax Expense Benefit Continuing Operations Discontinued Operations Extraordinary Items IncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsExtraordinaryItems	-348000
CY2011Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	237000
CY2011Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-829000
CY2011Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1189000
CY2011Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2850000
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.04
CY2011Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	234000
CY2011Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2355000
CY2011Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	2664000
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	13011000
CY2011Q3	us-gaap	Noninterest Income NoninterestIncome	13082000
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.04
CY2011Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	895000
CY2011Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared
CY2011Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	81125000	shares
CY2011Q3	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	781000
CY2011Q3	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	1106000
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15861000
CY2011Q3	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	32000
CY2011Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	53405000
CY2011Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	64585000
CY2011Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	267000
CY2011Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7514000
CY2011Q3	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	4000
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	3357000
CY2011Q3	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Trading Revenue FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInTradingRevenue	6420000
CY2011Q3	us-gaap	Noninterest Expense NoninterestExpense	45481000
CY2011Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3592000
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.05
CY2011Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	890000
CY2011Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	0
CY2011Q3	us-gaap	Occupancy Net OccupancyNet	5126000
CY2011Q3	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	1400000
CY2011Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	23319000
CY2011Q3	us-gaap	Interest Expense InterestExpense	9548000
CY2011Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	17897000
CY2011Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-507000
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.05
CY2011Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	781000
CY2011Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	7207000
CY2011Q3	wal	Reduction In Interest Income ReductionInInterestIncome	2200000
CY2011Q3	wal	Financing Receivable Modification Number Of Contracts FinancingReceivableModificationNumberOfContracts	62	Contract
CY2011Q3	wal	Financing Receivable Modification Post Modification Recorded Investment FinancingReceivableModificationPostModificationRecordedInvestment	43046000
CY2011Q3	wal	Financing Receivable Modification Pre Modification Recorded Investment FinancingReceivableModificationPreModificationRecordedInvestment	45838000
CY2011Q3	wal	Affinity Credit Card Revenue AffinityCreditCardRevenue	363000
CY2011Q3	wal	Customer Service CustomerService	900000
CY2011Q3	wal	Dividend Income Operating Non Taxable DividendIncomeOperatingNonTaxable	637000
CY2011Q3	wal	Dividend Income Operating Taxable DividendIncomeOperatingTaxable	278000
CY2011Q3	wal	Financing Receivable Forgiven Principal Balance FinancingReceivableForgivenPrincipalBalance	303000
CY2011Q3	wal	Financing Receivable Waived Fees And Other Expenses FinancingReceivableWaivedFeesAndOtherExpenses	174000
CY2011Q3	wal	Legal Professional And Director Fees LegalProfessionalAndDirectorFees	1912000
CY2011Q3	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	2059000
CY2011Q3	wal	Mark To Market Losses Gains Net MarkToMarketLossesGainsNet	6420000
CY2011Q3	wal	Net Gains And Losses Recognized On Trading Securities NetGainsAndLossesRecognizedOnTradingSecurities	32000
CY2011Q3	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	2128000
CY2011Q3	wal	Other Real Estate And Foreclosed Assets Valuation Adjustment OtherRealEstateAndForeclosedAssetsValuationAdjustment	-1888000
CY2011Q3	wal	Service Charges And Fees Net ServiceChargesAndFeesNet	2337000
CY2011Q3	wal	Weighted Average Interest Rates WeightedAverageInterestRates	0.1097	pure
CY2011Q3	wal	Merger Restructure Expense MergerRestructureExpense	974000
CY2011Q3	wal	Non Interest Expense Related To Discontinued Affinity Credit Card NonInterestExpenseRelatedToDiscontinuedAffinityCreditCard	1192000
CY2011Q3	wal	Financing Receivables Impaired Troubled Debt Restructuring Write Down Due To Interest Concessions FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownDueToInterestConcessions	2489000
CY2011Q3	wal	Income Loss From Discontinuing Operations Per Basic Share IncomeLossFromDiscontinuingOperationsPerBasicShare	-0.01
CY2011Q3	wal	Interest Expense Junior Subordinated Debt InterestExpenseJuniorSubordinatedDebt	465000
CY2012Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	8932000
CY2012Q3	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	3435000
CY2012Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	352000
CY2012Q3	us-gaap	Loans And Leases Receivable Commitments To Purchase Or Sell LoansAndLeasesReceivableCommitmentsToPurchaseOrSell	13800000
CY2012Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	3974000
CY2012Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	222781000
CY2012Q3	us-gaap	Additions To Other Assets Amount AdditionsToOtherAssetsAmount	10993000
CY2012Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	81758000	shares
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-243000
CY2012Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	69580000
CY2012Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	2158000
CY2012Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	3912000
CY2012Q3	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	37000
CY2012Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	78669000
CY2012Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	22453000
CY2012Q3	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	2225000
CY2012Q3	us-gaap	Reductions In Other Assets Amount ReductionsInOtherAssetsAmount	9205000
CY2012Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	15701000
CY2012Q3	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	42000
CY2012Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	536000	shares
CY2012Q3	us-gaap	Marketing Expense MarketingExpense	1231000
CY2012Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1892000
CY2012Q3	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	143000
CY2012Q3	us-gaap	Income Tax Expense Benefit Continuing Operations Discontinued Operations Extraordinary Items IncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsExtraordinaryItems	-176000
CY2012Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	55000
CY2012Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-419000
CY2012Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1116000
CY2012Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7819000
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.18
CY2012Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2723000
CY2012Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2604000
CY2012Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	2121000
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	15458000
CY2012Q3	us-gaap	Noninterest Income NoninterestIncome	6982000
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.18
CY2012Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1390000
CY2012Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared
CY2012Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	82294000	shares
CY2012Q3	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	1031000
CY2012Q3	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	1073000
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	23277000
CY2012Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	63014000
CY2012Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	71946000
CY2012Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	329000
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6752000
CY2012Q3	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	3000
CY2012Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	8478000
CY2012Q3	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Trading Revenue FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInTradingRevenue	469000
CY2012Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	17600	shares
CY2012Q3	us-gaap	Noninterest Expense NoninterestExpense	47543000
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	15106000
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.19
CY2012Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	880000
CY2012Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	0
CY2012Q3	us-gaap	Occupancy Net OccupancyNet	4655000
CY2012Q3	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	1500000
CY2012Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	25500000
CY2012Q3	us-gaap	Interest Expense InterestExpense	6723000
CY2012Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	10926000
CY2012Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-668000
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.19
CY2012Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	1031000
CY2012Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	5295000
CY2012Q3	wal	Reduction In Interest Income ReductionInInterestIncome	1300000
CY2012Q3	wal	Amortization Of Equity Method Investment Assets AmortizationOfEquityMethodInvestmentAssets	651000
CY2012Q3	wal	Financing Receivable Modification Number Of Contracts FinancingReceivableModificationNumberOfContracts	18	Contract
CY2012Q3	wal	Financing Receivable Modification Post Modification Recorded Investment FinancingReceivableModificationPostModificationRecordedInvestment	29200000
CY2012Q3	wal	Financing Receivable Modification Pre Modification Recorded Investment FinancingReceivableModificationPreModificationRecordedInvestment	29624000
CY2012Q3	wal	Affinity Credit Card Revenue AffinityCreditCardRevenue	315000
CY2012Q3	wal	Customer Service CustomerService	653000
CY2012Q3	wal	Dividend Income Operating Non Taxable DividendIncomeOperatingNonTaxable	711000
CY2012Q3	wal	Dividend Income Operating Taxable DividendIncomeOperatingTaxable	305000
CY2012Q3	wal	Financing Receivable Forgiven Principal Balance FinancingReceivableForgivenPrincipalBalance	10000
CY2012Q3	wal	Financing Receivable Waived Fees And Other Expenses FinancingReceivableWaivedFeesAndOtherExpenses	19000
CY2012Q3	wal	Legal Professional And Director Fees LegalProfessionalAndDirectorFees	2291000
CY2012Q3	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	1236000
CY2012Q3	wal	Mark To Market Losses Gains Net MarkToMarketLossesGainsNet	470000
CY2012Q3	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	126000
CY2012Q3	wal	Other Real Estate And Foreclosed Assets Valuation Adjustment OtherRealEstateAndForeclosedAssetsValuationAdjustment	-548000
CY2012Q3	wal	Service Charges And Fees Net ServiceChargesAndFeesNet	2412000
CY2012Q3	wal	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Option Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionGrantsInPeriodWeightedAverageGrantDateFairValue	200000
CY2012Q3	wal	Unrealized Gain On Cash Flow Hedge Net UnrealizedGainOnCashFlowHedgeNet	9000
CY2012Q3	wal	Weighted Average Interest Rates WeightedAverageInterestRates	0.1080	pure
CY2012Q3	wal	Merger Restructure Expense MergerRestructureExpense	113000
CY2012Q3	wal	Non Interest Expense Related To Discontinued Affinity Credit Card NonInterestExpenseRelatedToDiscontinuedAffinityCreditCard	734000
CY2012Q3	wal	Financing Receivables Impaired Troubled Debt Restructuring Write Down Due To Interest Concessions FinancingReceivablesImpairedTroubledDebtRestructuringWriteDownDueToInterestConcessions	414000
CY2012Q3	wal	Income Loss From Discontinuing Operations Per Basic Share IncomeLossFromDiscontinuingOperationsPerBasicShare	0.00
CY2012Q3	wal	Interest Expense Junior Subordinated Debt InterestExpenseJuniorSubordinatedDebt	487000

Files In Submission

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$WAL
WESTERN ALLIANCE BANCORPORATION Stock $wal

2012 Q4 Form 10-Q Financial Statement

#000119312512449418 Filed on November 02, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WAL WESTERN ALLIANCE BANCORPORATION Stock $wal

2012 Q4 Form 10-Q Financial Statement

#000119312512449418 Filed on November 02, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WAL
WESTERN ALLIANCE BANCORPORATION Stock $wal