$WAL
WESTERN ALLIANCE BANCORPORATION Stock $wal

$wal Overview Financials Valuation SEC Filings Company Website

2016 Q4 Form 10-Q Financial Statement

#000121254516000467 Filed on October 31, 2016

Income Statement

Concept	2016 Q4	2016 Q3	2015 Q4
Revenue	$187.4M	$184.8M	$151.3M
YoY Change	23.84%	26.34%	37.39%
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	$3.200M	$3.200M	$2.500M
YoY Change	28.0%	52.38%	31.58%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$12.14M	$12.20M	$7.988M
YoY Change	52.0%	38.26%	-0.22%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$96.16M	$96.22M	$77.87M
YoY Change	23.49%	31.82%	42.84%
Income Tax	$26.36M	$29.17M	$19.35M
% Of Pretax Income	27.42%	30.32%	24.85%
Net Earnings	$69.80M	$67.05M	$58.53M
YoY Change	19.26%	20.04%	44.83%
Net Earnings / Revenue	37.24%	36.29%	38.67%
Basic Earnings Per Share	$0.67	$0.65	$0.58
Diluted Earnings Per Share	$0.67	$0.64	$0.57
COMMON SHARES
Basic Shares Outstanding	105.1M shares	103.8M shares	102.3M shares
Diluted Shares Outstanding		104.6M shares

Balance Sheet

Concept	2016 Q4	2016 Q3	2015 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$284.5M	$356.1M	$224.6M
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	$119.8M	$121.3M	$118.5M
YoY Change	1.1%	-0.38%	4.14%
Goodwill	$290.0M	$290.0M	$289.6M
YoY Change	0.11%	0.21%	1147.15%
Intangibles	$12.93M	$13.63M	$15.72M
YoY Change	-17.75%	-17.02%	484.46%
Long-Term Investments
YoY Change
Other Assets	$95.00M	$73.00M	$86.00M
YoY Change	10.47%	-7.59%	36.51%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$17.20B	$17.04B	$14.28B
YoY Change	20.5%	22.12%	34.66%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$80.00M	$0.00	$150.0M
YoY Change	-46.67%	-100.0%	-16.74%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$42.00M	$44.00M	$38.00M
YoY Change	10.53%	-16.98%	-72.46%
LONG-TERM LIABILITIES
Long-Term Debt	$368.0M	$383.0M	$0.00
YoY Change			-100.0%
Other Long-Term Liabilities	$270.0M	$315.0M	$254.0M
YoY Change	6.3%	56.72%	38.8%
Total Long-Term Liabilities	$638.0M	$698.0M	$0.00
YoY Change			-100.0%
TOTAL LIABILITIES
Total Short-Term Liabilities	$42.00M	$44.00M	$38.00M
Total Long-Term Liabilities	$638.0M	$698.0M	$0.00
Total Liabilities	$15.31B	$15.19B	$12.68B
YoY Change	20.7%	22.74%	32.13%
SHAREHOLDERS EQUITY
Retained Earnings	$522.4M	$452.6M	$262.6M
YoY Change	98.92%	106.78%	207.35%
Common Stock	$10.00K	$10.00K	$10.00K
YoY Change	0.0%	0.0%	11.11%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$26.36M	$26.21M	$16.88M
YoY Change	56.18%
Treasury Stock Shares		1.297M shares	995.2K shares
Shareholders Equity	$1.892B	$1.857B	$1.592B
YoY Change
Total Liabilities & Shareholders Equity	$17.20B	$17.04B	$14.28B
YoY Change	20.5%	22.12%	34.66%

Cashflow Statement

Concept	2016 Q4	2016 Q3	2015 Q4
OPERATING ACTIVITIES
Net Income	$69.80M	$67.05M	$58.53M
YoY Change	19.26%	20.04%	44.83%
Depreciation, Depletion And Amortization	$3.200M	$3.200M	$2.500M
YoY Change	28.0%	52.38%	31.58%
Cash From Operating Activities	$66.10M	$99.40M	$75.80M
YoY Change	-12.8%	79.1%	25.7%
INVESTING ACTIVITIES
Capital Expenditures	-$1.300M	-$2.700M	$1.000M
YoY Change	-230.0%	-66.25%	-129.41%
Acquisitions
YoY Change
Other Investing Activities	-$320.8M	-$684.2M	-$390.3M
YoY Change	-17.81%	-21.69%	-0.51%
Cash From Investing Activities	-$321.9M	-$687.0M	-$389.2M
YoY Change	-17.29%	-22.08%	-1.64%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	184.2M	247.4M	212.7M
YoY Change	-13.4%	-37.08%	-8.16%
NET CHANGE
Cash From Operating Activities	66.10M	99.40M	75.80M
Cash From Investing Activities	-321.9M	-687.0M	-389.2M
Cash From Financing Activities	184.2M	247.4M	212.7M
Net Change In Cash	-71.60M	-340.2M	-100.7M
YoY Change	-28.9%	-21.43%	-2.99%
FREE CASH FLOW
Cash From Operating Activities	$66.10M	$99.40M	$75.80M
Capital Expenditures	-$1.300M	-$2.700M	$1.000M
Free Cash Flow	$67.40M	$102.1M	$74.80M
YoY Change	-9.89%	60.79%	17.43%

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	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2016
	dei	Document Period End Date DocumentPeriodEndDate	2016-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0001212545
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	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	Yes
	dei	Trading Symbol TradingSymbol	WAL
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CY2016Q3	us-gaap	Deposits Deposits	14443200000	USD
CY2016Q3	us-gaap	Deposits Deposits	14443160000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	6039000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	9272000	USD
CY2015Q3	us-gaap	Derivative Assets DerivativeAssets	4009000	USD
CY2015Q4	us-gaap	Derivative Assets DerivativeAssets	3569000	USD
CY2015Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	4009000	USD
CY2015Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	3569000	USD
CY2016Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	4350000	USD
CY2015Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	70391000	USD
CY2015Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	64785000	USD
CY2016Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	100067000	USD
CY2015Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	70400000	USD
CY2015Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	70391000	USD
CY2015Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	64785000	USD
CY2015Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	64800000	USD
CY2016Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	100067000	USD
CY2016Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	100100000	USD
CY2015Q3	us-gaap	Dividend Income Securities Operating Taxable DividendIncomeSecuritiesOperatingTaxable	2542000	USD
	us-gaap	Dividend Income Securities Operating Taxable DividendIncomeSecuritiesOperatingTaxable	7629000	USD
CY2016Q3	us-gaap	Dividend Income Securities Operating Taxable DividendIncomeSecuritiesOperatingTaxable	2209000	USD
	us-gaap	Dividend Income Securities Operating Taxable DividendIncomeSecuritiesOperatingTaxable	6217000	USD
	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	599000	USD
CY2015Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.55
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.46
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.65
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.85
CY2015Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.55
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.45
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.64
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.84
CY2015Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2347
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2488
CY2016Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.3032
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2831
	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	5660000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	5660000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	4064000	USD
CY2015Q3	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-547000	USD
	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-1452000	USD
CY2016Q3	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-622000	USD
	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	-1855000	USD
CY2015Q4	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Face Amount Liability FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability	3733203000	USD
CY2016Q3	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Face Amount Liability FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability	4078009000	USD
CY2015Q3	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	5319000	USD
	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-2740000	USD
CY2016Q3	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-4616000	USD
	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-2404000	USD
CY2015Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	46928000	USD
CY2015Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-594000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-1235000	USD
CY2016Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	369000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	492000	USD
CY2015Q3	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
CY2016Q3	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
CY2015Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome	3274000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome	-1676000	USD
CY2016Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome	-2825000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome	-1491000	USD
CY2015Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	0	USD
CY2016Q3	us-gaap	Federal Funds Purchased FederalFundsPurchased	0	USD
CY2015	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0036
CY2015Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	150000000	USD
CY2016Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	0	USD
CY2015Q3	us-gaap	Fees And Commissions FeesAndCommissions	4327000	USD
	us-gaap	Fees And Commissions FeesAndCommissions	10344000	USD
CY2016Q3	us-gaap	Fees And Commissions FeesAndCommissions	4877000	USD
	us-gaap	Fees And Commissions FeesAndCommissions	13849000	USD
CY2015Q3	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	954000	USD
	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	2666000	USD
CY2016Q3	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	1177000	USD
	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	3268000	USD
CY2014Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	110216000	USD
CY2015Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	115056000	USD
CY2015Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	117072000	USD
CY2015Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	119068000	USD
CY2016Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	122104000	USD
CY2016Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	122884000	USD
CY2015Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	114374000	USD
CY2016Q3	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	117037000	USD
CY2015Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	4658000	USD
CY2016Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	4775000	USD
CY2015Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3133000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	10162000	USD
CY2016Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1489000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	8977000	USD
CY2015Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1117000	USD
CY2016Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2709000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	12161000	USD
CY2015Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	10901140000	USD
CY2016Q3	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	12745623000	USD
CY2015Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	128874000	USD
CY2016Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	104755000	USD
CY2015Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	2
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3
CY2016Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	0
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	0
CY2015Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	271000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	527000	USD
CY2016Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	0	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	0	USD
CY2015Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	274000	USD
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	530000	USD
CY2016Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	0	USD
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	0	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	2
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	2
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	339000	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	5714000	USD
CY2015Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	3028000	USD
CY2016Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	2817000	USD
CY2015Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	11046589000	USD
CY2016Q3	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	12969778000	USD
CY2015Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	48381000	USD
CY2016Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	40608000	USD
CY2015Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	66265000	USD
CY2016Q3	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	42484000	USD
	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	118700000	USD
	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	37100000	USD
CY2014Q4	us-gaap	Foreclosed Assets ForeclosedAssets	57150000	USD
CY2015Q2	us-gaap	Foreclosed Assets ForeclosedAssets	59335000	USD
CY2015Q3	us-gaap	Foreclosed Assets ForeclosedAssets	57719000	USD
CY2015Q3	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	-62000	USD
	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	582000	USD
CY2016Q3	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	0	USD
	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	1001000	USD
CY2015Q4	us-gaap	Foreclosed Assets ForeclosedAssets	43942000	USD
CY2016Q2	us-gaap	Foreclosed Assets ForeclosedAssets	49844000	USD
CY2016Q3	us-gaap	Foreclosed Assets ForeclosedAssets	49619000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	19000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	268000	USD
CY2015Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-62000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	582000	USD
CY2016Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	1001000	USD
CY2015Q3	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	0	USD
	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	1103000	USD
CY2016Q3	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	0	USD
	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	2057000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-81000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2015Q3	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-470000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	2585000	USD
CY2016Q3	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	25000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-304000	USD
CY2015Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	3375000	USD
	us-gaap	General Insurance Expense GeneralInsuranceExpense	7739000	USD
CY2016Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	3144000	USD
	us-gaap	General Insurance Expense GeneralInsuranceExpense	9430000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	289638000	USD
CY2016Q3	us-gaap	Goodwill Goodwill	289967000	USD
CY2015Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	0	USD
CY2016Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	52421000	USD
CY2016Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	3296000	USD
CY2016Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0	USD
CY2016Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	15508000	USD
CY2016Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	15363000	USD
CY2016Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	40209000	USD
CY2016Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	37058000	USD
CY2015Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	0	USD
CY2016Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	55717000	USD
CY2015Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	145161000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	154510000	USD
CY2016Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	106357000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	112901000	USD
CY2015Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1303000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	3613000	USD
CY2016Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	959000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	3122000	USD
CY2015Q3	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	208000	USD
	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	1409000	USD
CY2016Q3	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	245000	USD
	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	642000	USD
CY2015Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	128874000	USD
CY2016Q3	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	104755000	USD
CY2015Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	4658000	USD
CY2016Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	4775000	USD
CY2015Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	104587000	USD
CY2016Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	91346000	USD
CY2015Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	333268000	USD
CY2016Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	326566000	USD
CY2015Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	24287000	USD
CY2016Q3	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	13409000	USD
CY2015Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	25345000	USD
CY2016Q3	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	13717000	USD
CY2015Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	72993000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	180664000	USD
CY2016Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	96223000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	265015000	USD
CY2015Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17133000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	44946000	USD
CY2016Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29171000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	75017000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	21047000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	46863000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-13600000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	937514000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	2412537000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2898000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-20498000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	11198000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-10948000	USD
CY2015Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	4338000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	10147000	USD
CY2016Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	6077000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	16506000	USD
CY2015Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	15716000	USD
CY2016Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	13625000	USD
CY2015Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	305400000	USD
CY2016Q3	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	303600000	USD
CY2015Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	146233000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	373813000	USD
CY2016Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	184750000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	513095000	USD
CY2015Q3	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	13000	USD
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	41000	USD
CY2016Q3	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	9000	USD
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	30000	USD
CY2015Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	133087000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	338946000	USD
CY2016Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	167914000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	467715000	USD
CY2015Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	7936648000	USD
CY2016Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	8818344000	USD
CY2015Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	90931000	USD
CY2016Q3	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	175331000	USD
CY2015Q3	us-gaap	Interest Expense InterestExpense	8826000	USD
	us-gaap	Interest Expense InterestExpense	24580000	USD
CY2016Q3	us-gaap	Interest Expense InterestExpense	12203000	USD
	us-gaap	Interest Expense InterestExpense	31151000	USD
CY2015Q3	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	1246000	USD
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	5558000	USD
CY2016Q3	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	68000	USD
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	366000	USD
CY2015Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	540000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	1431000	USD
CY2016Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	625000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	1843000	USD
CY2015Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	5550000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	16058000	USD
CY2016Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	8072000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	21993000	USD
CY2015Q3	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	2008000	USD
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	2900000	USD
CY2016Q3	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	4048000	USD
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	8746000	USD
CY2015Q3	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	22000	USD
	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	64000	USD
CY2016Q3	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	15000	USD
	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	46000	USD
CY2015Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	137407000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	348533000	USD
CY2016Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	170547000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	474944000	USD
CY2015Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	137407000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	349233000	USD
CY2016Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	172547000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	481944000	USD
CY2015Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	10559000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	27075000	USD
CY2016Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	13797000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	37278000	USD
	us-gaap	Interest Paid InterestPaid	25572000	USD
	us-gaap	Interest Paid InterestPaid	35056000	USD
CY2015Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	58400000	USD
CY2016Q3	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	61000000	USD
CY2015Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	43660000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	108607000	USD
CY2016Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	49542000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	139108000	USD
CY2015Q4	us-gaap	Liabilities Liabilities	12683587000	USD
CY2015Q4	us-gaap	Liabilities Liabilities	12683600000	USD
CY2016Q3	us-gaap	Liabilities Liabilities	15185248000	USD
CY2016Q3	us-gaap	Liabilities Liabilities	15185200000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	14275100000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	14275089000	USD
CY2016Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	17042600000	USD
CY2016Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	17042602000	USD
	us-gaap	Line Of Credit Facility Expiration Period LineOfCreditFacilityExpirationPeriod	P1Y
CY2015Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	119100000	USD
CY2015Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	119068000	USD
CY2016Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	122900000	USD
CY2016Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	122884000	USD
CY2015Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	19200000	USD
CY2016Q3	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	21000000	USD
	us-gaap	Loans And Leases Receivable Gain Loss On Sales Net LoansAndLeasesReceivableGainLossOnSalesNet	400000	USD
	us-gaap	Loans And Leases Receivable Gain Loss On Sales Net LoansAndLeasesReceivableGainLossOnSalesNet	2100000	USD
CY2015Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	11112854000	USD
CY2016Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	13012262000	USD
CY2015Q3	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	3000	USD
	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	3000	USD
CY2016Q3	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	0	USD
	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	0	USD
CY2015Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	11112854000	USD
CY2016Q3	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	13012262000	USD
CY2015Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	10993786000	USD
CY2016Q3	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	12889378000	USD
CY2015Q3	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	62000	USD
	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	521000	USD
CY2016Q3	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	0	USD
	us-gaap	Loss On Sale Of Investments LossOnSaleOfInvestments	1056000	USD
CY2015Q3	us-gaap	Marketing Expense MarketingExpense	747000	USD
	us-gaap	Marketing Expense MarketingExpense	1587000	USD
CY2016Q3	us-gaap	Marketing Expense MarketingExpense	678000	USD
	us-gaap	Marketing Expense MarketingExpense	2432000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	6034000	USD
CY2015Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	122000	USD
CY2016Q3	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	247000	USD
CY2015Q3	us-gaap	Mortgage Loans On Real Estate Foreclosures MortgageLoansOnRealEstateForeclosures	14111000	USD
	us-gaap	Mortgage Loans On Real Estate Foreclosures MortgageLoansOnRealEstateForeclosures	27570000	USD
CY2016Q3	us-gaap	Mortgage Loans On Real Estate Foreclosures MortgageLoansOnRealEstateForeclosures	1162000	USD
	us-gaap	Mortgage Loans On Real Estate Foreclosures MortgageLoansOnRealEstateForeclosures	11888000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	993611000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2485230000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-977185000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2568269000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	144588000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	214482000	USD
CY2015Q3	us-gaap	Net Income Loss NetIncomeLoss	55860000	USD
	us-gaap	Net Income Loss NetIncomeLoss	135718000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	67052000	USD
	us-gaap	Net Income Loss NetIncomeLoss	189998000	USD
CY2015Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	55684000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	135119000	USD
CY2016Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	67052000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	189998000	USD
CY2015Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	4093976000	USD
CY2016Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	5624816000	USD
CY2015Q3	us-gaap	Noninterest Expense NoninterestExpense	72916000	USD
	us-gaap	Noninterest Expense NoninterestExpense	188158000	USD
CY2016Q3	us-gaap	Noninterest Expense NoninterestExpense	85007000	USD
	us-gaap	Noninterest Expense NoninterestExpense	242304000	USD
CY2015Q3	us-gaap	Noninterest Income NoninterestIncome	8502000	USD
	us-gaap	Noninterest Income NoninterestIncome	20289000	USD
CY2016Q3	us-gaap	Noninterest Income NoninterestIncome	10683000	USD
	us-gaap	Noninterest Income NoninterestIncome	32375000	USD
CY2015Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1767000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3113000	USD
CY2016Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1814000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	5289000	USD
CY2015Q4	us-gaap	Notes Receivable Net NotesReceivableNet	11112854000	USD
CY2016Q3	us-gaap	Notes Receivable Net NotesReceivableNet	13012262000	USD
CY2015Q3	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	45	Property
CY2015Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	39	Property
CY2016Q3	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	33	Property
CY2015Q3	us-gaap	Occupancy Net OccupancyNet	5915000	USD
	us-gaap	Occupancy Net OccupancyNet	15677000	USD
CY2016Q3	us-gaap	Occupancy Net OccupancyNet	6856000	USD
	us-gaap	Occupancy Net OccupancyNet	20359000	USD
CY2015Q3	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2300000	USD
	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	5500000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1738000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	755000	USD
CY2016Q3	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2800000	USD
	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	8100000	USD
CY2015Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	0	USD
CY2016Q3	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	0	USD
CY2015Q4	us-gaap	Other Assets OtherAssets	273976000	USD
CY2016Q3	us-gaap	Other Assets OtherAssets	286852000	USD
CY2015Q4	us-gaap	Other Borrowings OtherBorrowings	150000000	USD
CY2016Q3	us-gaap	Other Borrowings OtherBorrowings	0	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-3437000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-2579000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	4671000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-7837000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	8531000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	2585000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-10234000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	14843000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8569000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2328000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-10234000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	14132000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	229000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-108000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-18000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-143000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	63000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	4000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	10000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-38000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	365000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	711000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	24000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-217000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-290000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	5486000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	4261000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-7415000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	16316000	USD
CY2015Q4	us-gaap	Other Foreclosed Assets OtherForeclosedAssets	43900000	USD
CY2016Q3	us-gaap	Other Foreclosed Assets OtherForeclosedAssets	49600000	USD
CY2015Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	45000	USD
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	163000	USD
CY2016Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	830000	USD
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1885000	USD
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	11860000	USD
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	9324000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	599000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	661417000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1017250000	USD
CY2015Q4	us-gaap	Other Liabilities OtherLiabilities	254480000	USD
CY2016Q3	us-gaap	Other Liabilities OtherLiabilities	314784000	USD
CY2015Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	7538000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	17997000	USD
CY2016Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	8415000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	24299000	USD
CY2015Q3	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	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	0	USD
CY2016Q3	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	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 Loans And Leases PaymentsForProceedsFromLoansAndLeases	943775000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	551931000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-342427000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1272187000	USD
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	USD
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	52607000	USD
	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	25695000	USD
	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	6902000	USD
CY2015Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Other Debt Securities Available For Sale Or Held For Investment PledgedFinancialInstrumentsNotSeparatelyReportedOtherDebtSecuritiesAvailableForSaleOrHeldForInvestment	830700000	USD
CY2016Q3	us-gaap	Pledged Financial Instruments Not Separately Reported Other Debt Securities Available For Sale Or Held For Investment PledgedFinancialInstrumentsNotSeparatelyReportedOtherDebtSecuritiesAvailableForSaleOrHeldForInvestment	854100000	USD
CY2015Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	176000	USD
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	599000	USD
CY2016Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	55785000	USD
	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	148211000	USD
	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	169268000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	382000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1710000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	181286000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	323426000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	301000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	256000	USD
	us-gaap	Proceeds From Repayments Of Debt ProceedsFromRepaymentsOfDebt	-91966000	USD
	us-gaap	Proceeds From Repayments Of Debt ProceedsFromRepaymentsOfDebt	-143784000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	129323000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	34304000	USD
CY2015Q3	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	15687000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	30062000	USD
CY2016Q3	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	1228000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	118535000	USD
CY2016Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	121274000	USD
CY2015Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	0	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	700000	USD
CY2016Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	2000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	7000000	USD
CY2014Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	14271000	USD
CY2015Q2	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	12447000	USD
CY2015Q3	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	10915000	USD
CY2015Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	9042000	USD
CY2016Q2	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	6623000	USD
CY2016Q3	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	6775000	USD
CY2015Q4	us-gaap	Receivable With Imputed Interest Discount ReceivableWithImputedInterestDiscount	8200000	USD
CY2016Q3	us-gaap	Receivable With Imputed Interest Discount ReceivableWithImputedInterestDiscount	6600000	USD
CY2015Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-38000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	365000	USD
CY2016Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	0	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	711000	USD
CY2015Q4	us-gaap	Restricted Investments RestrictedInvestments	58111000	USD
CY2016Q3	us-gaap	Restricted Investments RestrictedInvestments	65013000	USD
	us-gaap	Restricted Stock Award Forfeitures RestrictedStockAwardForfeitures	7440000	USD
	us-gaap	Restricted Stock Award Forfeitures RestrictedStockAwardForfeitures	9331000	USD
CY2015Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	262638000	USD
CY2016Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	452636000	USD
CY2015Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	38155000	USD
CY2016Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	44372000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	13288000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	15039000	USD
CY2015Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	150000000	USD
CY2016Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	431031000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	55785000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	19993000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	14513000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1738000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	755000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	1000928000	USD
CY2015Q3	us-gaap	Stockholders Equity StockholdersEquity	1583697000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	1591500000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	1591502000	USD
CY2016Q3	us-gaap	Stockholders Equity StockholdersEquity	1857400000	USD
CY2016Q3	us-gaap	Stockholders Equity StockholdersEquity	1857354000	USD
CY2016Q3	us-gaap	Subordinated Debt SubordinatedDebt	321900000	USD
CY2015Q4	us-gaap	Trade And Loans Receivables Held For Sale Net Not Part Of Disposal Group TradeAndLoansReceivablesHeldForSaleNetNotPartOfDisposalGroup	23809000	USD
CY2016Q3	us-gaap	Trade And Loans Receivables Held For Sale Net Not Part Of Disposal Group TradeAndLoansReceivablesHeldForSaleNetNotPartOfDisposalGroup	21337000	USD
CY2015Q4	us-gaap	Trading Securities TradingSecurities	1481000	USD
CY2016Q3	us-gaap	Trading Securities TradingSecurities	1279000	USD
CY2015Q4	us-gaap	Trading Securities Short Term Investments Amortized Cost TradingSecuritiesShortTermInvestmentsAmortizedCost	1389000	USD
CY2016Q3	us-gaap	Trading Securities Short Term Investments Amortized Cost TradingSecuritiesShortTermInvestmentsAmortizedCost	1208000	USD
CY2015Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	32.14
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	27.54
CY2016Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	34.30
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	30.95
CY2015Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	995186	shares
CY2016Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	1296681	shares
CY2015Q3	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	15345	shares
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	270126	shares
CY2016Q3	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	8328	shares
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	301495	shares
CY2015Q4	us-gaap	Treasury Stock Value TreasuryStockValue	16879000	USD
CY2016Q3	us-gaap	Treasury Stock Value TreasuryStockValue	26210000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	100000	USD
CY2016Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	100000	USD
CY2015Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	0	USD
	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	0	USD
CY2016Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	0	USD
	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	0	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	100000	USD
CY2016Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	100000	USD
CY2015Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2016Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	700000	USD
CY2016Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	700000	USD
CY2015Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	101520000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92932000	shares
CY2016Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	104564000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	103532000	shares
CY2015Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	100776000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	92345000	shares
CY2016Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	103768000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	102791000	shares
	wal	Accretion And Amortization Fair Market Value Adjustments Relating To Acquisitionsof Loans AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans	12151000	USD
	wal	Accretion And Amortization Fair Market Value Adjustments Relating To Acquisitionsof Loans AccretionAndAmortizationFairMarketValueAdjustmentsRelatingToAcquisitionsofLoans	22278000	USD
	wal	Accretionand Amortization Fair Market Value Adjustments Relatingto Acquisitionsof Other Assetsand Liabilities AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities	-955000	USD
	wal	Accretionand Amortization Fair Market Value Adjustments Relatingto Acquisitionsof Other Assetsand Liabilities AccretionandAmortizationFairMarketValueAdjustmentsRelatingtoAcquisitionsofOtherAssetsandLiabilities	-2323000	USD
CY2016Q3	wal	Additional Collateral Amount AdditionalCollateralAmount	123100000	USD
CY2015Q3	wal	Amortizationof Low Income Housing Tax Credits AmortizationofLowIncomeHousingTaxCredits	4800000	USD
	wal	Amortizationof Low Income Housing Tax Credits AmortizationofLowIncomeHousingTaxCredits	10400000	USD
CY2016Q3	wal	Amortizationof Low Income Housing Tax Credits AmortizationofLowIncomeHousingTaxCredits	5500000	USD
	wal	Amortizationof Low Income Housing Tax Credits AmortizationofLowIncomeHousingTaxCredits	13700000	USD
CY2015Q4	wal	Borrowingsand Qualifying Debt BorrowingsandQualifyingDebt	360300000	USD
CY2016Q3	wal	Borrowingsand Qualifying Debt BorrowingsandQualifyingDebt	382900000	USD
	wal	Business Combination Noncash Assets Acquired At Fair Value BusinessCombinationNoncashAssetsAcquiredAtFairValue	1587626000	USD
	wal	Business Combination Noncash Assets Acquired At Fair Value BusinessCombinationNoncashAssetsAcquiredAtFairValue	1284557000	USD
CY2015Q3	wal	Cardexpense Cardexpense	757000	USD
	wal	Cardexpense Cardexpense	1844000	USD
CY2016Q3	wal	Cardexpense Cardexpense	536000	USD
	wal	Cardexpense Cardexpense	2247000	USD
CY2015Q4	wal	Cash Cash Equivalentsand Investment Securities CashCashEquivalentsandInvestmentSecurities	2266800000	USD
CY2016Q3	wal	Cash Cash Equivalentsand Investment Securities CashCashEquivalentsandInvestmentSecurities	3134200000	USD
	wal	Changein Unfunded Obligations Non Cash ChangeinUnfundedObligationsNonCash	-2507000	USD
	wal	Changein Unfunded Obligations Non Cash ChangeinUnfundedObligationsNonCash	-19236000	USD
CY2015Q3	wal	Collateral Netted Against Derivative Liabilities CollateralNettedAgainstDerivativeLiabilities	67300000	USD
CY2015Q4	wal	Collateral Netted Against Derivative Liabilities CollateralNettedAgainstDerivativeLiabilities	61700000	USD
CY2016Q3	wal	Collateral Netted Against Derivative Liabilities CollateralNettedAgainstDerivativeLiabilities	100100000	USD
CY2015Q3	wal	Derivative Instruments Notional Amount Netting Adjustments DerivativeInstrumentsNotionalAmountNettingAdjustments	0	USD
CY2015Q4	wal	Derivative Instruments Notional Amount Netting Adjustments DerivativeInstrumentsNotionalAmountNettingAdjustments	0	USD
CY2016Q3	wal	Derivative Instruments Notional Amount Netting Adjustments DerivativeInstrumentsNotionalAmountNettingAdjustments	0	USD
CY2015Q3	wal	Derivative Netting Adjustments DerivativeNettingAdjustments	0	USD
CY2015Q4	wal	Derivative Netting Adjustments DerivativeNettingAdjustments	0	USD
CY2016Q3	wal	Derivative Netting Adjustments DerivativeNettingAdjustments	0	USD
CY2015Q3	wal	Dilutive Effect Of Stock Options Restricted Stock And Equity Settled Awards DilutiveEffectOfStockOptionsRestrictedStockAndEquitySettledAwards	744000	shares
	wal	Dilutive Effect Of Stock Options Restricted Stock And Equity Settled Awards DilutiveEffectOfStockOptionsRestrictedStockAndEquitySettledAwards	587000	shares
CY2016Q3	wal	Dilutive Effect Of Stock Options Restricted Stock And Equity Settled Awards DilutiveEffectOfStockOptionsRestrictedStockAndEquitySettledAwards	796000	shares
	wal	Dilutive Effect Of Stock Options Restricted Stock And Equity Settled Awards DilutiveEffectOfStockOptionsRestrictedStockAndEquitySettledAwards	741000	shares
CY2015Q4	wal	Excess Funds Providedby Usedin Segment Basis ExcessFundsProvidedbyUsedinSegmentBasis	0	USD
CY2016Q3	wal	Excess Funds Providedby Usedin Segment Basis ExcessFundsProvidedbyUsedinSegmentBasis	0	USD
CY2015Q3	wal	Financing Receivable Modifications Forgiven Principal Balance FinancingReceivableModificationsForgivenPrincipalBalance	0	USD
	wal	Financing Receivable Modifications Forgiven Principal Balance FinancingReceivableModificationsForgivenPrincipalBalance	0	USD
CY2016Q3	wal	Financing Receivable Modifications Forgiven Principal Balance FinancingReceivableModificationsForgivenPrincipalBalance	0	USD
	wal	Financing Receivable Modifications Forgiven Principal Balance FinancingReceivableModificationsForgivenPrincipalBalance	0	USD
CY2015Q3	wal	Financing Receivable Modifications Waived Feedand Other Expenses FinancingReceivableModificationsWaivedFeedandOtherExpenses	4000	USD
	wal	Financing Receivable Modifications Waived Feedand Other Expenses FinancingReceivableModificationsWaivedFeedandOtherExpenses	4000	USD
CY2016Q3	wal	Financing Receivable Modifications Waived Feedand Other Expenses FinancingReceivableModificationsWaivedFeedandOtherExpenses	0	USD
	wal	Financing Receivable Modifications Waived Feedand Other Expenses FinancingReceivableModificationsWaivedFeedandOtherExpenses	0	USD
CY2015Q4	wal	Financing Receivable Unpaid Principal Balance FinancingReceivableUnpaidPrincipalBalance	11379517000	USD
CY2016Q3	wal	Financing Receivable Unpaid Principal Balance FinancingReceivableUnpaidPrincipalBalance	13290254000	USD
CY2015Q4	wal	Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment	10901140000	USD
CY2016Q3	wal	Financing Receivable Unpaid Principal Balance Collectively Evaluated For Impairment FinancingReceivableUnpaidPrincipalBalanceCollectivelyEvaluatedForImpairment	12745623000	USD
CY2014Q4	wal	Foreclosed Assets Gross ForeclosedAssetsGross	71421000	USD
CY2015Q2	wal	Foreclosed Assets Gross ForeclosedAssetsGross	71782000	USD
CY2015Q3	wal	Foreclosed Assets Gross ForeclosedAssetsGross	68634000	USD
CY2015Q4	wal	Foreclosed Assets Gross ForeclosedAssetsGross	52984000	USD
CY2016Q2	wal	Foreclosed Assets Gross ForeclosedAssetsGross	56467000	USD
CY2016Q3	wal	Foreclosed Assets Gross ForeclosedAssetsGross	56394000	USD
	wal	Gain Loss On Foreclosed Assets GainLossOnForeclosedAssets	2585000	USD
	wal	Gain Loss On Foreclosed Assets GainLossOnForeclosedAssets	-304000	USD
CY2015Q3	wal	Gains Losses On Transfers To Other Real Estate And Foreclosed Assets GainsLossesOnTransfersToOtherRealEstateAndForeclosedAssets	0	USD
	wal	Gains Losses On Transfers To Other Real Estate And Foreclosed Assets GainsLossesOnTransfersToOtherRealEstateAndForeclosedAssets	900000	USD
CY2016Q3	wal	Gains Losses On Transfers To Other Real Estate And Foreclosed Assets GainsLossesOnTransfersToOtherRealEstateAndForeclosedAssets	0	USD
	wal	Gains Losses On Transfers To Other Real Estate And Foreclosed Assets GainsLossesOnTransfersToOtherRealEstateAndForeclosedAssets	0	USD
CY2015Q4	wal	Irc Section382 Limitation Valuation Allowance IRCSection382LimitationValuationAllowance	9300000	USD
CY2015Q4	wal	Interest Rateand Credit Markson Acquired Loans InterestRateandCreditMarksonAcquiredLoans	40500000	USD
CY2016Q3	wal	Interest Rateand Credit Markson Acquired Loans InterestRateandCreditMarksonAcquiredLoans	77400000	USD
CY2015Q4	wal	Investmentin Low Income Housing Tax Credit InvestmentinLowIncomeHousingTaxCredit	152700000	USD
CY2016Q3	wal	Investmentin Low Income Housing Tax Credit InvestmentinLowIncomeHousingTaxCredit	166100000	USD
CY2015Q3	wal	Legal Professional And Director Fees LegalProfessionalAndDirectorFees	4052000	USD
	wal	Legal Professional And Director Fees LegalProfessionalAndDirectorFees	12658000	USD
CY2016Q3	wal	Legal Professional And Director Fees LegalProfessionalAndDirectorFees	5691000	USD
	wal	Legal Professional And Director Fees LegalProfessionalAndDirectorFees	17010000	USD
CY2015Q3	wal	Lending Related Feesand Gains Losseson Saleof Loans Net LendingRelatedFeesandGainsLossesonSaleofLoansNet	-314000	USD
CY2016Q3	wal	Irc Section382 Limitation Valuation Allowance IRCSection382LimitationValuationAllowance	9100000	USD
CY2015Q4	wal	Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment	358613000	USD
CY2016Q3	wal	Impaired Financing Receivable Unpaid Principal Balance Individually Evaluated For Impairment ImpairedFinancingReceivableUnpaidPrincipalBalanceIndividuallyEvaluatedForImpairment	340283000	USD
CY2015Q4	wal	Impaired Financing Receivable With No Related Allowance ImpairedFinancingReceivableWithNoRelatedAllowance	0	USD
CY2016Q3	wal	Impaired Financing Receivable With No Related Allowance ImpairedFinancingReceivableWithNoRelatedAllowance	0	USD
CY2015Q4	wal	Impaired Financing Receivables With Norelated Allowance Balanceswith Chargeoffs ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs	37800000	USD
CY2016Q3	wal	Impaired Financing Receivables With Norelated Allowance Balanceswith Chargeoffs ImpairedFinancingReceivablesWithNorelatedAllowanceBalanceswithChargeoffs	32500000	USD
	wal	Lending Related Feesand Gains Losseson Saleof Loans Net LendingRelatedFeesandGainsLossesonSaleofLoansNet	5000	USD
CY2016Q3	wal	Lending Related Feesand Gains Losseson Saleof Loans Net LendingRelatedFeesandGainsLossesonSaleofLoansNet	459000	USD
	wal	Lending Related Feesand Gains Losseson Saleof Loans Net LendingRelatedFeesandGainsLossesonSaleofLoansNet	3282000	USD
CY2015Q3	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	1099000	USD
	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	3473000	USD
CY2016Q3	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	788000	USD
	wal	Loan And Repossessed Asset Expense LoanAndRepossessedAssetExpense	2522000	USD
CY2015Q3	wal	Loans And Loans Receivable Purchases LoansAndLoansReceivablePurchases	70800000	USD
	wal	Loans And Loans Receivable Purchases LoansAndLoansReceivablePurchases	96900000	USD
CY2016Q3	wal	Loans And Loans Receivable Purchases LoansAndLoansReceivablePurchases	163700000	USD
	wal	Loans And Loans Receivable Purchases LoansAndLoansReceivablePurchases	262000000	USD
CY2015Q4	wal	Loansand Leases Receivable Including Heldfor Sale Net LoansandLeasesReceivableIncludingHeldforSaleNet	11017600000	USD
CY2016Q3	wal	Loansand Leases Receivable Including Heldfor Sale Net LoansandLeasesReceivableIncludingHeldforSaleNet	12910700000	USD
CY2015Q4	wal	Loansand Leases Receivable Including Heldfor Sale Netof Deferred Income LoansandLeasesReceivableIncludingHeldforSaleNetofDeferredIncome	11136700000	USD
CY2016Q3	wal	Loansand Leases Receivable Including Heldfor Sale Netof Deferred Income LoansandLeasesReceivableIncludingHeldforSaleNetofDeferredIncome	13033600000	USD
	wal	Maximum Loan To Value Ratio MaximumLoanToValueRatio	0.75
	wal	Maximum Period Of Internal Loss Allowance Calculation Modal MaximumPeriodOfInternalLossAllowanceCalculationModal	P10Y
CY2015Q3	wal	Merger Restructure Expense MergerRestructureExpense	835000	USD
	wal	Merger Restructure Expense MergerRestructureExpense	8800000	USD
	wal	Merger Restructure Expense MergerRestructureExpense	8836000	USD
CY2016Q3	wal	Merger Restructure Expense MergerRestructureExpense	2729000	USD
	wal	Merger Restructure Expense MergerRestructureExpense	6391000	USD
CY2015Q3	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	-104000	USD
	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	-1673000	USD
CY2016Q3	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	-146000	USD
	wal	Net Loss Gain On Sales Valuations Of Repossessed Assets And Bank Premises Net NetLossGainOnSalesValuationsOfRepossessedAssetsAndBankPremisesNet	-91000	USD
CY2015Q4	wal	Non Performing Assets NonPerformingAssets	166058000	USD
CY2016Q3	wal	Non Performing Assets NonPerformingAssets	147748000	USD
CY2015Q4	wal	Non Performing Loans NonPerformingLoans	122116000	USD
CY2016Q3	wal	Non Performing Loans NonPerformingLoans	98129000	USD
CY2015Q4	wal	Number Of Securities In Unrealized Position NumberOfSecuritiesInUnrealizedPosition	146	positions
CY2016Q3	wal	Number Of Securities In Unrealized Position NumberOfSecuritiesInUnrealizedPosition	78	positions
	wal	Number Of Unconsolidated Subsidiaries NumberOfUnconsolidatedSubsidiaries	8	Subsidiary
	wal	Number Of Wholly Owned Subsidiaries NumberOfWhollyOwnedSubsidiaries	10	Subsidiary
	wal	Number Of Wholly Owned Subsidiaries Non Bank Subsidiaries NumberOfWhollyOwnedSubsidiariesNonBankSubsidiaries	1	Subsidiary
	wal	Numberof Statutory Business Trusts Formedor Acquired NumberofStatutoryBusinessTrustsFormedorAcquired	8	Trust
CY2015Q3	wal	Other Assets Acquiredthrough Foreclosure Additions Dueto Business Acquisition OtherAssetsAcquiredthroughForeclosureAdditionsDuetoBusinessAcquisition	143000	USD
	wal	Other Assets Acquiredthrough Foreclosure Additions Dueto Business Acquisition OtherAssetsAcquiredthroughForeclosureAdditionsDuetoBusinessAcquisition	1407000	USD
CY2015Q4	wal	Other Assets Segment OtherAssetsSegment	641400000	USD
CY2016Q3	wal	Other Assets Segment OtherAssetsSegment	644500000	USD
	wal	Other Comprehensive Income Loss Pensionand Other Postretirement Benefit Plans From Business Acquisition OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansFromBusinessAcquisition	108000	USD
	wal	Other Comprehensive Income Loss Unrealized Gain Losson Debt Carriedat Fair Value Tax OtherComprehensiveIncomeLossUnrealizedGainLossonDebtCarriedatFairValueTax	1044000	USD
	wal	Other Comprehensive Income Loss Unrealized Gain Losson Debt Carriedat Fair Value Tax OtherComprehensiveIncomeLossUnrealizedGainLossonDebtCarriedatFairValueTax	896000	USD
CY2015Q3	wal	Other Comprehensive Income Loss Unrealized Gain Losson Junior Subordinated Debt Carriedat Fair Value OtherComprehensiveIncomeLossUnrealizedGainLossonJuniorSubordinatedDebtCarriedatFairValue	3274000	USD
	wal	Other Comprehensive Income Loss Unrealized Gain Losson Junior Subordinated Debt Carriedat Fair Value OtherComprehensiveIncomeLossUnrealizedGainLossonJuniorSubordinatedDebtCarriedatFairValue	-1676000	USD
CY2016Q3	wal	Other Comprehensive Income Loss Unrealized Gain Losson Junior Subordinated Debt Carriedat Fair Value OtherComprehensiveIncomeLossUnrealizedGainLossonJuniorSubordinatedDebtCarriedatFairValue	-2825000	USD
	wal	Other Comprehensive Income Loss Unrealized Gain Losson Junior Subordinated Debt Carriedat Fair Value OtherComprehensiveIncomeLossUnrealizedGainLossonJuniorSubordinatedDebtCarriedatFairValue	-1491000	USD
CY2015Q4	wal	Other Liabilities Segment OtherLiabilitiesSegment	292700000	USD
CY2016Q3	wal	Other Liabilities Segment OtherLiabilitiesSegment	359100000	USD
CY2015Q3	wal	Over Collateralization On Derivatives To Banks After Application Of Master Netting Agreements And Collateral OverCollateralizationOnDerivativesToBanksAfterApplicationOfMasterNettingAgreementsAndCollateral	8400000	USD
CY2015Q4	wal	Over Collateralization On Derivatives To Banks After Application Of Master Netting Agreements And Collateral OverCollateralizationOnDerivativesToBanksAfterApplicationOfMasterNettingAgreementsAndCollateral	15500000	USD
CY2016Q3	wal	Over Collateralization On Derivatives To Banks After Application Of Master Netting Agreements And Collateral OverCollateralizationOnDerivativesToBanksAfterApplicationOfMasterNettingAgreementsAndCollateral	23100000	USD
CY2015Q4	wal	Percentage Of Commercial Real Estate Loans Occupied By Owners PercentageOfCommercialRealEstateLoansOccupiedByOwners	0.48
CY2016Q3	wal	Percentage Of Commercial Real Estate Loans Occupied By Owners PercentageOfCommercialRealEstateLoansOccupiedByOwners	0.35
CY2015Q3	wal	Proceeds From Sale Of Other Real Estate Owned Gross ProceedsFromSaleOfOtherRealEstateOwnedGross	16646000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Gross ProceedsFromSaleOfOtherRealEstateOwnedGross	34349000	USD
CY2016Q3	wal	Proceeds From Sale Of Other Real Estate Owned Gross ProceedsFromSaleOfOtherRealEstateOwnedGross	1260000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Gross ProceedsFromSaleOfOtherRealEstateOwnedGross	8174000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Net ProceedsFromSaleOfOtherRealEstateOwnedNet	30062000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Net ProceedsFromSaleOfOtherRealEstateOwnedNet	6034000	USD
CY2015Q3	wal	Proceeds From Sale Of Other Real Estate Owned Valuation Allowance ProceedsFromSaleOfOtherRealEstateOwnedValuationAllowance	959000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Valuation Allowance ProceedsFromSaleOfOtherRealEstateOwnedValuationAllowance	4287000	USD
CY2016Q3	wal	Proceeds From Sale Of Other Real Estate Owned Valuation Allowance ProceedsFromSaleOfOtherRealEstateOwnedValuationAllowance	32000	USD
	wal	Proceeds From Sale Of Other Real Estate Owned Valuation Allowance ProceedsFromSaleOfOtherRealEstateOwnedValuationAllowance	2140000	USD
	wal	Proceedsfrom Paymentsfor Investment In Money Market ProceedsfromPaymentsforInvestmentInMoneyMarket	-636000	USD
	wal	Proceedsfrom Paymentsfor Investment In Money Market ProceedsfromPaymentsforInvestmentInMoneyMarket	-126000	USD
	wal	Purchase Of Investment Tax Credits PurchaseOfInvestmentTaxCredits	17583000	USD
	wal	Purchase Of Investment Tax Credits PurchaseOfInvestmentTaxCredits	23672000	USD
CY2015Q4	wal	Qualifying Debt QualifyingDebt	210328000	USD
CY2016Q3	wal	Qualifying Debt QualifyingDebt	382932000	USD
	wal	Restrictedstocksurrendered Restrictedstocksurrendered	6947000	USD
	wal	Restrictedstocksurrendered Restrictedstocksurrendered	9331000	USD
CY2015Q3	wal	Small Business Administrationand Warrant Income SmallBusinessAdministrationandWarrantIncome	846000	USD
	wal	Small Business Administrationand Warrant Income SmallBusinessAdministrationandWarrantIncome	846000	USD
CY2016Q3	wal	Small Business Administrationand Warrant Income SmallBusinessAdministrationandWarrantIncome	1457000	USD
	wal	Small Business Administrationand Warrant Income SmallBusinessAdministrationandWarrantIncome	2828000	USD
CY2015Q4	wal	Troubled Debt Restructured Loans TroubledDebtRestructuredLoans	70707000	USD
CY2016Q3	wal	Troubled Debt Restructured Loans TroubledDebtRestructuredLoans	54704000	USD
	wal	Unfunded Commitments To Purchase Investment Tax Credits UnfundedCommitmentsToPurchaseInvestmentTaxCredits	4652000	USD
	wal	Unfunded Commitments To Purchase Investment Tax Credits UnfundedCommitmentsToPurchaseInvestmentTaxCredits	31602000	USD
CY2015Q4	wal	Unfunded Low Income Housing Tax Credit Obligations UnfundedLowIncomeHousingTaxCreditObligations	61200000	USD
CY2016Q3	wal	Unfunded Low Income Housing Tax Credit Obligations UnfundedLowIncomeHousingTaxCreditObligations	63400000	USD
CY2015Q3	wal	Valuation Adjustments Of Other Repossessed Assets Net ValuationAdjustmentsOfOtherRepossessedAssetsNet	573000	USD
	wal	Valuation Adjustments Of Other Repossessed Assets Net ValuationAdjustmentsOfOtherRepossessedAssetsNet	-931000	USD
CY2016Q3	wal	Valuation Adjustments Of Other Repossessed Assets Net ValuationAdjustmentsOfOtherRepossessedAssetsNet	-184000	USD
	wal	Valuation Adjustments Of Other Repossessed Assets Net ValuationAdjustmentsOfOtherRepossessedAssetsNet	127000	USD
CY2015Q3	wal	Valuation Adjustments Of Other Repossessed Assets Valuation Allowance ValuationAdjustmentsOfOtherRepossessedAssetsValuationAllowance	-573000	USD
	wal	Valuation Adjustments Of Other Repossessed Assets Valuation Allowance ValuationAdjustmentsOfOtherRepossessedAssetsValuationAllowance	931000	USD
CY2016Q3	wal	Valuation Adjustments Of Other Repossessed Assets Valuation Allowance ValuationAdjustmentsOfOtherRepossessedAssetsValuationAllowance	184000	USD
	wal	Valuation Adjustments Of Other Repossessed Assets Valuation Allowance ValuationAdjustmentsOfOtherRepossessedAssetsValuationAllowance	-127000	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, 2015</font><font style="font-family:inherit;font-size:10pt;"> and for the </font><font style="font-family:inherit;font-size:10pt;">three and nine months ended</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">September 30, 2015</font><font style="font-family:inherit;font-size:10pt;"> 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. Management evaluates these estimates and judgments on an ongoing basis and bases its estimates on experience, current and expected future conditions, third-party evaluations and various other assumptions that management believes are reasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities as well as identifying and assessing the accounting treatment with respect to commitments and contingencies. Actual results may differ from those estimates and assumptions used in the Unaudited Consolidated Financial Statements and related notes. 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.</font></div></div>

Files In Submission

Name	View Source	Status
0001212545-16-000467-index-headers.html	Edgar Link	pending
0001212545-16-000467-index.html	Edgar Link	pending
0001212545-16-000467.txt	Edgar Link	pending
0001212545-16-000467-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
wal-20160930.xml	Edgar Link	completed
wal-20160930.xsd	Edgar Link	pending
wal-20160930_cal.xml	Edgar Link	unprocessable
wal-20160930_def.xml	Edgar Link	unprocessable
wal-20160930_lab.xml	Edgar Link	unprocessable
wal-20160930_pre.xml	Edgar Link	unprocessable
wal930201610-q.htm	Edgar Link	pending
walex31110q9302016.htm	Edgar Link	pending
walex31210q9302016.htm	Edgar Link	pending
walex3210q9302016.htm	Edgar Link	pending

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$WAL
WESTERN ALLIANCE BANCORPORATION Stock $wal

2016 Q4 Form 10-Q Financial Statement

#000121254516000467 Filed on October 31, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WAL WESTERN ALLIANCE BANCORPORATION Stock $wal

2016 Q4 Form 10-Q Financial Statement

#000121254516000467 Filed on October 31, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WAL
WESTERN ALLIANCE BANCORPORATION Stock $wal