$WTFC
WINTRUST FINANCIAL CORP Stock $wtfc

$wtfc Overview Financials Valuation SEC Filings Company Website

2016 Q4 Form 10-K Financial Statement

#000101532818000080 Filed on February 28, 2018

Income Statement

Concept	2016 Q4	2016 Q3	2016 Q2
Revenue	$215.0M	$271.2M	$260.1M
YoY Change	14.68%	17.68%	11.19%
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	$14.30M	$11.50M	$13.70M
YoY Change	10.0%	-5.74%	73.42%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$24.24M	$23.51M	$21.79M
YoY Change	19.5%	18.52%	18.77%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$88.33M	$85.05M	$79.97M
YoY Change	56.59%	36.75%	14.04%
Income Tax	$33.72M	$31.94M	$29.93M
% Of Pretax Income	38.18%	37.55%	37.43%
Net Earnings	$54.61M	$53.12M	$50.04M
YoY Change	53.77%	38.48%	14.17%
Net Earnings / Revenue	25.4%	19.58%	19.24%
Basic Earnings Per Share	$0.98	$0.96	$0.94
Diluted Earnings Per Share	$0.94	$0.92	$0.90
COMMON SHARES
Basic Shares Outstanding	51.77M shares	51.68M shares	49.14M shares
Diluted Shares Outstanding		55.73M shares	53.11M shares

Balance Sheet

Concept	2016 Q4	2016 Q3	2016 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$270.0M	$246.9M	$271.6M
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	$597.3M	$597.3M	$595.8M
YoY Change	0.85%	1.69%	4.25%
Goodwill	$498.6M	$485.9M	$486.1M
YoY Change	5.69%	2.92%	15.29%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$25.67B	$25.32B	$24.42B
YoY Change	12.04%	14.91%	17.46%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$505.0M	$446.0M	$522.0M
YoY Change	29.16%	23.89%	46.22%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$61.81M	$33.17M	$38.80M
YoY Change	-3.25%	-42.4%	-19.66%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$505.0M	$446.0M	$522.0M
YoY Change	29.16%	23.89%	46.22%
LONG-TERM LIABILITIES
Long-Term Debt	$655.0M	$601.0M	$606.0M
YoY Change	-2.67%	-1.64%	0.5%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$655.0M	$601.0M	$606.0M
YoY Change	-2.67%	-1.64%	0.5%
TOTAL LIABILITIES
Total Short-Term Liabilities	$505.0M	$446.0M	$522.0M
Total Long-Term Liabilities	$655.0M	$601.0M	$606.0M
Total Liabilities	$22.97B	$22.65B	$21.80B
YoY Change	11.75%	14.96%	17.66%
SHAREHOLDERS EQUITY
Retained Earnings	$1.097B	$1.052B	$1.008B
YoY Change	18.13%	16.65%	15.56%
Common Stock	$51.98M	$51.81M	$51.71M
YoY Change	7.24%	7.0%	8.26%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$4.589M	$4.522M	$4.145M
YoY Change	15.5%	14.08%	4.57%
Treasury Stock Shares	97.75K shares	96.52K shares	89.43K shares
Shareholders Equity	$2.696B	$2.674B	$2.624B
YoY Change
Total Liabilities & Shareholders Equity	$25.67B	$25.32B	$24.42B
YoY Change	12.04%	14.91%	17.46%

Cashflow Statement

Concept	2016 Q4	2016 Q3	2016 Q2
OPERATING ACTIVITIES
Net Income	$54.61M	$53.12M	$50.04M
YoY Change	53.77%	38.48%	14.17%
Depreciation, Depletion And Amortization	$14.30M	$11.50M	$13.70M
YoY Change	10.0%	-5.74%	73.42%
Cash From Operating Activities	$393.6M	$9.800M	-$159.0M
YoY Change	1352.4%	-85.24%	-349.22%
INVESTING ACTIVITIES
Capital Expenditures	-$5.600M	-$4.100M	-$15.50M
YoY Change	-60.28%	5.13%	-20.92%
Acquisitions
YoY Change
Other Investing Activities	-$474.4M	-$949.7M	-$525.3M
YoY Change	-41.07%	143.89%	17.44%
Cash From Investing Activities	-$480.0M	-$953.7M	-$540.9M
YoY Change	-41.41%	142.55%	15.85%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$152.9M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	109.5M	919.4M	759.1M
YoY Change	-86.6%	182.63%	108.32%
NET CHANGE
Cash From Operating Activities	393.6M	9.800M	-159.0M
Cash From Investing Activities	-480.0M	-953.7M	-540.9M
Cash From Financing Activities	109.5M	919.4M	759.1M
Net Change In Cash	23.10M	-24.50M	59.20M
YoY Change	-7.97%	1533.33%	-252.97%
FREE CASH FLOW
Cash From Operating Activities	$393.6M	$9.800M	-$159.0M
Capital Expenditures	-$5.600M	-$4.100M	-$15.50M
Free Cash Flow	$399.2M	$13.90M	-$143.5M
YoY Change	868.93%	-80.23%	-272.06%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2017	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2017	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Type DocumentType	10-K
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0001015328
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CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2017Q2	dei	Entity Public Float EntityPublicFloat	4218250436	USD
CY2017	dei	Entity Registrant Name EntityRegistrantName	WINTRUST FINANCIAL CORP
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2017	dei	Trading Symbol TradingSymbol	WTFC
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CY2016Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Three Months Through Six Months ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsThroughSixMonths	429756000	USD
CY2017Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Three Months Through Six Months ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsThroughSixMonths	614963000	USD
CY2015	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	6314000	USD
CY2016	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	6313000	USD
CY2017	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	1578000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	62584000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	98272000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	54977000	USD
CY2015	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-39000	USD
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-10000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1243000	USD
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	71962000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	118303000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	69072000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	9417000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	20041000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12852000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	15550000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4464000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	51668000	USD
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1542000	USD
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	2226000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1172000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	23054000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6676000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	63243000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	94610000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	95731000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	5962000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-14000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	10403000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	153363000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	80351000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	58753000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	7624000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	3063000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	3476000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	0	USD
CY2016Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2408000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2307000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	1872000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	1199000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	28125000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	12310000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	9704000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6898000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	19036000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	7465000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	15380000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	10085000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	7619000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	28440000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	42681000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	7326000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	8916000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6334000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3433000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	31053000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	23211000	USD
CY2015	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	6400000	USD
CY2016	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	6600000	USD
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	8900000	USD
CY2016Q4	us-gaap	Deposits Deposits	21658632000	USD
CY2017Q4	us-gaap	Deposits Deposits	23183347000	USD
CY2016Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	4441811000	USD
CY2017Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	4515353000	USD
CY2016Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2180482000	USD
CY2017Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2829373000	USD
CY2015	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	41010000	USD
CY2016	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	53148000	USD
CY2017	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	63107000	USD
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	31100000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	32100000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	31500000	USD
CY2016Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2017Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2016Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	8530000	USD
CY2017Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	18060000	USD
CY2016Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	12400000	USD
CY2017Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	2220000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	49213000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	48985000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	49213000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	48985000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	26242000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	16047000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	37665000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	33716000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	37665000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	33716000	USD
CY2017	us-gaap	Fdic Indemnification Asset Period Increase Decrease FDICIndemnificationAssetPeriodIncreaseDecrease	-1658000	USD
CY2016Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.90
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	10824000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	16618000	USD
CY2016Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2017Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2017Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	1500000	USD
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	21069000	USD
CY2016	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	24055000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	30765000	USD
CY2015	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	10869000	USD
CY2016	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	14513000	USD
CY2017	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	9778000	USD
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.05
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.94
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.94
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.96
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.98
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.83
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.05
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.15
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.14
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.19
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.53
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.93
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.90
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.92
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.94
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.66
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.11
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.12
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.17
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.40
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	Rate
CY2017Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	15100000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3800000	USD
CY2016	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3700000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5100000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	985000	USD
CY2016	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	2300000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	7800000	USD
CY2015	us-gaap	Equipment Expense EquipmentExpense	32889000	USD
CY2016	us-gaap	Equipment Expense EquipmentExpense	37055000	USD
CY2017	us-gaap	Equipment Expense EquipmentExpense	38358000	USD
CY2016	us-gaap	Fdic Indemnification Asset Additional Estimated Losses FDICIndemnificationAssetAdditionalEstimatedLosses	1303000	USD
CY2017	us-gaap	Fdic Indemnification Asset Additional Estimated Losses FDICIndemnificationAssetAdditionalEstimatedLosses	291000	USD
CY2016	us-gaap	Fdic Indemnification Asset Period Increase Decrease FDICIndemnificationAssetPeriodIncreaseDecrease	9309000	USD
CY2017Q2	us-gaap	Fdic Indemnification Asset Period Increase Decrease FDICIndemnificationAssetPeriodIncreaseDecrease	-4900000	USD
CY2015	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	1187115000	USD
CY2016	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	882865000	USD
CY2017	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	1022000	USD
CY2015	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	12386000	USD
CY2016	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	16065000	USD
CY2017	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	16231000	USD
CY2016Q4	us-gaap	Federal Funds Sold And Securities Purchased Under Agreements To Resell FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	2851000	USD
CY2017Q4	us-gaap	Federal Funds Sold And Securities Purchased Under Agreements To Resell FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	57000	USD
CY2016Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	153831000	USD
CY2016Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	153800000	USD
CY2017Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	559700000	USD
CY2017Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	559663000	USD
CY2016Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	133494000	USD
CY2017Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	89989000	USD
CY2015	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	27384000	USD
CY2016	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	31210000	USD
CY2017	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	34513000	USD
CY2015	us-gaap	Fees And Commissions Mortgage Banking FeesAndCommissionsMortgageBanking	115011000	USD
CY2016	us-gaap	Fees And Commissions Mortgage Banking FeesAndCommissionsMortgageBanking	128743000	USD
CY2017	us-gaap	Fees And Commissions Mortgage Banking FeesAndCommissionsMortgageBanking	113472000	USD
CY2017Q4	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	44262000	USD
CY2016Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	123964000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	139174000	USD
CY2016Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	116296000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	130106000	USD
CY2016Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	6903000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8037000	USD
CY2016	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	7808000	USD
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	7685000	USD
CY2016	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	24691000	USD
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	22695000	USD
CY2016Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	19147420000	USD
CY2017Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	21150978000	USD
CY2016Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	91323000	USD
CY2017Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	105412000	USD
CY2015	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	12
CY2016	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	21
CY2017	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	21
CY2015	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2034000	USD
CY2016	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	12897000	USD
CY2017	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	24325000	USD
CY2016Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	41708000	USD
CY2017Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	49786000	USD
CY2015	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	6
CY2016	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	8
CY2017	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	8
CY2015	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	769000	USD
CY2016	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	7841000	USD
CY2017	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	6978000	USD
CY2016Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	33738000	USD
CY2017Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	22659000	USD
CY2016Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	19508748000	USD
CY2017Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	21408938000	USD
CY2016Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	77578000	USD
CY2017Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	77602000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	3796000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1556000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	2056000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2597000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	3223000	USD
CY2015	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	4483000	USD
CY2016	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	5187000	USD
CY2017	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	3593000	USD
CY2017Q4	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	400000	USD
CY2015	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	104695000	USD
CY2016	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	112981000	USD
CY2017	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	88699000	USD
CY2015	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-807000	USD
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	305000	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	192000	USD
CY2015	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	3588000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2015	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	350000	USD
CY2016	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-1381000	USD
CY2017	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-639000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	498587000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	501884000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	999000	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2017	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	2298000	USD
CY2016Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	635705000	USD
CY2017Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	826449000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	654000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	2691000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	28757000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	16624000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1370000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	12357000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	28757000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	16624000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	582069000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	651349000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	27387000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	4267000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	526328000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	298750000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	55741000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	352599000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	67820000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	203680000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	69664000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	205227000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	29416000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	38012000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	29794000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	38392000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	510366000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	570653000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	536247000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	582660000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	171000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	0	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	170000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	607602000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	812516000	USD
CY2015	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	107200000	USD
CY2016	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	105423000	USD
CY2017	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	115261000	USD
CY2015	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	6200000	USD
CY2016	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	5485000	USD
CY2017	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	6298000	USD
CY2016Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	90516000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	105088000	USD
CY2016Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	6377000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	8023000	USD
CY2016Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	103046000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	127566000	USD
CY2016Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	57370000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	69004000	USD
CY2016Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	33146000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	36084000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	251765000	USD
CY2016Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	78497000	USD
CY2016Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	79971000	USD
CY2016Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	85054000	USD
CY2016Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	88332000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	331854000	USD
CY2017Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	88018000	USD
CY2017Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	101946000	USD
CY2017Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	104248000	USD
CY2017Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	95785000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	389997000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	95016000	USD
CY2016Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29386000	USD
CY2016Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29930000	USD
CY2016Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31939000	USD
CY2016Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	33724000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	124979000	USD
CY2017Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29640000	USD
CY2017Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	37049000	USD
CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38622000	USD
CY2017Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	27004000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	132315000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-10402000	USD
CY2015	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	148000	USD
CY2016	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-264000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-271000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	88118000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	116149000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	136499000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	1283000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	1439000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	1710000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	0	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	0	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-5470000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	689000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	42000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1193000	USD
CY2015	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	0	USD
CY2016	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	0	USD
CY2017	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	2850000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	9996000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	13017000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	15115000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	778000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	572000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	698000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	2878000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	3634000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	4658000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	94723000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	94888000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	76812000	USD
CY2015	us-gaap	Increase Decrease In Broker Dealer Related Receivables Payables Net IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet	3410000	USD
CY2016	us-gaap	Increase Decrease In Broker Dealer Related Receivables Payables Net IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet	-2450000	USD
CY2017	us-gaap	Increase Decrease In Broker Dealer Related Receivables Payables Net IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet	1250000	USD
CY2015	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1381425000	USD
CY2016	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	2769022000	USD
CY2017	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1524848000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	151132000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	43614000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	126071000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	292000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	113258000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	30693000	USD
CY2015	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-758000	USD
CY2016	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	1541000	USD
CY2017	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-994000	USD
CY2015	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	3070000	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	3100000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	985000	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1029000	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	894000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	998000	shares
CY2015	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	26940000	USD
CY2016	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	28776000	USD
CY2017	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	31495000	USD
CY2015	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	718464000	USD
CY2016Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	192231000	USD
CY2016Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	197064000	USD
CY2016Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	208149000	USD
CY2016Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	215013000	USD
CY2016	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	812457000	USD
CY2017Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	215759000	USD
CY2017Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	231181000	USD
CY2017Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	247688000	USD
CY2017Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	251840000	USD
CY2017	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	946468000	USD
CY2015	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	61006000	USD
CY2016	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	62038000	USD
CY2017	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	63315000	USD
CY2015	us-gaap	Interest And Dividend Income Securities Trading Or Measured At Fair Value InterestAndDividendIncomeSecuritiesTradingOrMeasuredAtFairValue	108000	USD
CY2016	us-gaap	Interest And Dividend Income Securities Trading Or Measured At Fair Value InterestAndDividendIncomeSecuritiesTradingOrMeasuredAtFairValue	75000	USD
CY2017	us-gaap	Interest And Dividend Income Securities Trading Or Measured At Fair Value InterestAndDividendIncomeSecuritiesTradingOrMeasuredAtFairValue	25000	USD
CY2015	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	651831000	USD
CY2016	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	741001000	USD
CY2017	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	868881000	USD
CY2016Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	15731255000	USD
CY2017Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	16390850000	USD
CY2016Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	980457000	USD
CY2017Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	1063242000	USD
CY2015	us-gaap	Interest Expense InterestExpense	76935000	USD
CY2016Q1	us-gaap	Interest Expense InterestExpense	20722000	USD
CY2016Q2	us-gaap	Interest Expense InterestExpense	21794000	USD
CY2016Q3	us-gaap	Interest Expense InterestExpense	23513000	USD
CY2016Q4	us-gaap	Interest Expense InterestExpense	24235000	USD
CY2016	us-gaap	Interest Expense InterestExpense	90264000	USD
CY2017Q1	us-gaap	Interest Expense InterestExpense	23179000	USD
CY2017Q2	us-gaap	Interest Expense InterestExpense	26772000	USD
CY2017Q3	us-gaap	Interest Expense InterestExpense	31700000	USD
CY2017Q4	us-gaap	Interest Expense InterestExpense	32741000	USD
CY2017	us-gaap	Interest Expense InterestExpense	114392000	USD
CY2015	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	3627000	USD
CY2016	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	4355000	USD
CY2017	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	5370000	USD
CY2015	us-gaap	Interest Expense Deposits InterestExpenseDeposits	48863000	USD
CY2016	us-gaap	Interest Expense Deposits InterestExpenseDeposits	58409000	USD
CY2017	us-gaap	Interest Expense Deposits InterestExpenseDeposits	83326000	USD
CY2015	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	9110000	USD
CY2016	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	10886000	USD
CY2017	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	8798000	USD
CY2015	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	8230000	USD
CY2016	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	9503000	USD
CY2017	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	9782000	USD
CY2015	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	7105000	USD
CY2016	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	7111000	USD
CY2017	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	7116000	USD
CY2015	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1486000	USD
CY2016	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	4236000	USD
CY2017	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	9252000	USD
CY2015	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	608587000	USD
CY2016Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	163475000	USD
CY2016Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	166141000	USD
CY2016Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	175065000	USD
CY2016Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	183428000	USD
CY2016	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	688109000	USD
CY2017Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	187371000	USD
CY2017Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	195518000	USD
CY2017Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	208092000	USD
CY2017Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	211327000	USD
CY2017	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	802308000	USD
CY2015	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	641529000	USD
CY2016Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	171509000	USD
CY2016Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	175270000	USD
CY2016Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	184636000	USD
CY2016Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	190778000	USD
CY2016	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	722193000	USD
CY2017Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	192580000	USD
CY2017Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	204409000	USD
CY2017Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	215988000	USD
CY2017Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	219099000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	832076000	USD
CY2015	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	4000	USD
CY2016	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	4000	USD
CY2017	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	2000	USD
CY2015	us-gaap	Interest Paid InterestPaid	77737000	USD
CY2016	us-gaap	Interest Paid InterestPaid	91390000	USD
CY2017	us-gaap	Interest Paid InterestPaid	112783000	USD
CY2016Q4	us-gaap	Interest Receivable And Other Assets InterestReceivableAndOtherAssets	593796000	USD
CY2017Q4	us-gaap	Interest Receivable And Other Assets InterestReceivableAndOtherAssets	567374000	USD
CY2016Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	253566000	USD
CY2017Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	253566000	USD
CY2015	us-gaap	Labor And Related Expense LaborAndRelatedExpense	382080000	USD
CY2016	us-gaap	Labor And Related Expense LaborAndRelatedExpense	405158000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	430078000	USD
CY2017	us-gaap	Lessor Leasing Arrangements Operating Leases Term Of Contract LessorLeasingArrangementsOperatingLeasesTermOfContract	P7Y
CY2016Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	205900000	USD
CY2017Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	195900000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	22972936000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	24939031000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	25668553000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	27915970000	USD
CY2015	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	1033219000	USD
CY2016	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	259631000	USD
CY2017	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	738000	USD
CY2015Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	105400000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	122291000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	137905000	USD
CY2015Q4	us-gaap	Loans And Leases Receivable Allowance Covered LoansAndLeasesReceivableAllowanceCovered	3026000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Allowance Covered LoansAndLeasesReceivableAllowanceCovered	1322000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance Covered LoansAndLeasesReceivableAllowanceCovered	0	USD
CY2016	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	3060000	USD
CY2017	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	2373000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	19703172000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	21640797000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered LoansAndLeasesReceivableNetReportedAmountCovered	58145000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered LoansAndLeasesReceivableNetReportedAmountCovered	0	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered	19637704000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered	21502892000	USD
CY2016Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	418374000	USD
CY2017Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	313592000	USD
CY2017Q4	us-gaap	Loans Payable To Bank LoansPayableToBank	150000000	USD
CY2016Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	22137000	USD
CY2017Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	33717000	USD
CY2015	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	323000	USD
CY2016Q1	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	1325000	USD
CY2016Q2	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	1440000	USD
CY2016Q3	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	3305000	USD
CY2016Q4	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	1575000	USD
CY2016	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	7645000	USD
CY2017Q1	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	-55000	USD
CY2017Q2	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	47000	USD
CY2017Q3	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	39000	USD
CY2017Q4	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	14000	USD
CY2017	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	45000	USD
CY2015	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	323000	USD
CY2016	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	7645000	USD
CY2017	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	45000	USD
CY2015	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	21924000	USD
CY2016	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	24776000	USD
CY2017	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	30830000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1647675000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2176883000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1910249000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1641553000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2492665000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2303744000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	38966000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	310032000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	401041000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	156749000	USD
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	49111000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	50041000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	53115000	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	54608000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	206875000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	58378000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	64897000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	65626000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	68781000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	257682000	USD
CY2015	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	152194000	USD
CY2016	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	198675000	USD
CY2017	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	249482000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	145880000	USD
CY2016Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	45483000	USD
CY2016Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	46413000	USD
CY2016Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	49487000	USD
CY2016Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	50979000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	192362000	USD
CY2017Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	54750000	USD
CY2017Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	62847000	USD
CY2017Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	63576000	USD
CY2017Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	66731000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	247904000	USD
CY2016Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	5927377000	USD
CY2017Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	6792497000	USD
CY2015	us-gaap	Noninterest Expense NoninterestExpense	628419000	USD
CY2016Q1	us-gaap	Noninterest Expense NoninterestExpense	153730000	USD
CY2016Q2	us-gaap	Noninterest Expense NoninterestExpense	170969000	USD
CY2016Q3	us-gaap	Noninterest Expense NoninterestExpense	176615000	USD
CY2016Q4	us-gaap	Noninterest Expense NoninterestExpense	180371000	USD
CY2016	us-gaap	Noninterest Expense NoninterestExpense	681685000	USD
CY2017Q1	us-gaap	Noninterest Expense NoninterestExpense	168118000	USD
CY2017Q2	us-gaap	Noninterest Expense NoninterestExpense	183544000	USD
CY2017Q3	us-gaap	Noninterest Expense NoninterestExpense	183575000	USD
CY2017Q4	us-gaap	Noninterest Expense NoninterestExpense	196580000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	731817000	USD
CY2015	us-gaap	Noninterest Income NoninterestIncome	271597000	USD
CY2016	us-gaap	Noninterest Income NoninterestIncome	325430000	USD
CY2017	us-gaap	Noninterest Income NoninterestIncome	319506000	USD
CY2015	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	37582000	USD
CY2016	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	53812000	USD
CY2017	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	56507000	USD
CY2016Q4	us-gaap	Notes Payable NotesPayable	52445000	USD
CY2017Q4	us-gaap	Notes Payable NotesPayable	41222000	USD
CY2017	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2015	us-gaap	Occupancy Net OccupancyNet	48880000	USD
CY2016	us-gaap	Occupancy Net OccupancyNet	50912000	USD
CY2017	us-gaap	Occupancy Net OccupancyNet	52920000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	166183000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	12791000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	10856000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	11721000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	13534000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	13011000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	104270000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	13631000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	4603000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	1112000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	1750000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	2327000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	3054000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	785000	USD
CY2015	us-gaap	Operating Leases Income Statement Depreciation Expense On Property Subject To Or Held For Lease OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease	1749000	USD
CY2016	us-gaap	Operating Leases Income Statement Depreciation Expense On Property Subject To Or Held For Lease OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease	13259000	USD
CY2017	us-gaap	Operating Leases Income Statement Depreciation Expense On Property Subject To Or Held For Lease OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease	24107000	USD
CY2015	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	2728000	USD
CY2016	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	16441000	USD
CY2017	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	29646000	USD
CY2015	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	7700000	USD
CY2016	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	8900000	USD
CY2017	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	9800000	USD
CY2015	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	15700000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	17400000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	17700000	USD
CY2016Q4	us-gaap	Other Borrowings OtherBorrowings	262486000	USD
CY2017Q4	us-gaap	Other Borrowings OtherBorrowings	266123000	USD
CY2015	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	-6442000	USD
CY2016	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	1080000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	2448000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-8141000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-11635000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	13496000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-26523000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-10433000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	24425000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-24001000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	3737000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	9446000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-17559000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	2657000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	6998000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-25376000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2620000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	23493000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	323000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	7645000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	45000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	196000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	4641000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	27000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	127000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	3004000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	18000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	533000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	10473000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	4958000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	324000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	6358000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	2999000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	209000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	4115000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	1959000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-13176000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-28932000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	22123000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-8023000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-17554000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	14417000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-5153000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-11378000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	7706000	USD
CY2016Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	21851000	USD
CY2017Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	17621000	USD
CY2016Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	18154000	USD
CY2017Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	49131000	USD
CY2015	us-gaap	Other Noninterest Expense OtherNoninterestExpense	74242000	USD
CY2016	us-gaap	Other Noninterest Expense OtherNoninterestExpense	75297000	USD
CY2017	us-gaap	Other Noninterest Expense OtherNoninterestExpense	71969000	USD
CY2016Q4	us-gaap	Other Real Estate Non Covered OtherRealEstateNonCovered	40300000	USD
CY2017Q4	us-gaap	Other Real Estate Non Covered OtherRealEstateNonCovered	40600000	USD
CY2015	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	0	USD
CY2016	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	0	USD
CY2017	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	0	USD
CY2015	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	3903777000	USD
CY2016	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	4386339000	USD
CY2017	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	3692085000	USD
CY2015	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	9999000	USD
CY2016	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	31913000	USD
CY2017	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-43505000	USD
CY2015	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	2066666000	USD
CY2016	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1779905000	USD
CY2017	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1863245000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	424000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	616000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	397000	USD
CY2014	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1300000	USD
CY2015	us-gaap	Payments Of Dividends PaymentsOfDividends	29888000	USD
CY2016	us-gaap	Payments Of Dividends PaymentsOfDividends	38568000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	40543000	USD
CY2015	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	2092652000	USD
CY2016	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	3398640000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	774066000	USD
CY2015	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	15428000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	613619000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	284000	USD
CY2015	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	22892000	USD
CY2016	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	486696000	USD
CY2017	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	301964000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	43459000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	33923000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	59194000	USD
CY2015	us-gaap	Pension Expense PensionExpense	1400000	USD
CY2016	us-gaap	Pension Expense PensionExpense	526000	USD
CY2017	us-gaap	Pension Expense PensionExpense	1200000	USD
CY2016Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Money Market PercentageOfInterestBearingDomesticDepositsToDepositsMoneyMarket	0.21
CY2017Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Money Market PercentageOfInterestBearingDomesticDepositsToDepositsMoneyMarket	0.20
CY2016Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Savings PercentageOfInterestBearingDomesticDepositsToDepositsSavings	0.10
CY2017Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Savings PercentageOfInterestBearingDomesticDepositsToDepositsSavings	0.12
CY2016Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Time Deposits PercentageOfInterestBearingDomesticDepositsToDepositsTimeDeposits	0.20
CY2017Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Time Deposits PercentageOfInterestBearingDomesticDepositsToDepositsTimeDeposits	0.19
CY2015	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	10869000	USD
CY2016Q1	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	3628000	USD
CY2016Q2	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	3628000	USD
CY2016Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	3628000	USD
CY2016Q4	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	3629000	USD
CY2016	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	14513000	USD
CY2017Q1	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	3628000	USD
CY2017Q2	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	2050000	USD
CY2017Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	2050000	USD
CY2017Q4	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	2050000	USD
CY2017	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	9778000	USD
CY2016Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2017Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2016Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2015Q4	us-gaap	Principal Amount Outstanding On Loans Managed And Securitized PrincipalAmountOutstandingOnLoansManagedAndSecuritized	939819000	USD
CY2016Q4	us-gaap	Principal Amount Outstanding On Loans Managed And Securitized PrincipalAmountOutstandingOnLoansManagedAndSecuritized	1784760000	USD
CY2017Q4	us-gaap	Principal Amount Outstanding On Loans Managed And Securitized PrincipalAmountOutstandingOnLoansManagedAndSecuritized	2929133000	USD
CY2016Q2	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	152900000	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	152911000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2015	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	120842000	USD
CY2016	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2014	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	139100000	USD
CY2015	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	2701000	USD
CY2016	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1840000	USD
CY2017	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2015	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	506798000	USD
CY2016	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1234162000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	284257000	USD
CY2015	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	531396000	USD
CY2016	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	-366591000	USD
CY2017	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	-81621000	USD
CY2015	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	44415000	USD
CY2016	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-3405000	USD
CY2017	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-4888000	USD
CY2015	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	1515559000	USD
CY2016	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	2208010000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	336539000	USD
CY2015	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	50405000	USD
CY2016	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	38367000	USD
CY2017	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	18742000	USD
CY2015	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	3971724000	USD
CY2016	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	4468984000	USD
CY2017	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	3869137000	USD
CY2015	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	11700000	USD
CY2016	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	11800000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	24100000	USD
CY2015	us-gaap	Professional Fees ProfessionalFees	18225000	USD
CY2016	us-gaap	Professional Fees ProfessionalFees	20411000	USD
CY2017	us-gaap	Professional Fees ProfessionalFees	27835000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	861525000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	913959000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	597301000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	621895000	USD
CY2016Q4	us-gaap	Property Subject To Or Available For Operating Lease Net PropertySubjectToOrAvailableForOperatingLeaseNet	129402000	USD
CY2017Q4	us-gaap	Property Subject To Or Available For Operating Lease Net PropertySubjectToOrAvailableForOperatingLeaseNet	212335000	USD
CY2016	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	34790000	USD
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	29982000	USD
CY2015	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	32942000	USD
CY2016Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	8034000	USD
CY2016Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	9129000	USD
CY2016Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	9571000	USD
CY2016Q4	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	7350000	USD
CY2016	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	34084000	USD
CY2017Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	5209000	USD
CY2017Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	8891000	USD
CY2017Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	7896000	USD
CY2017Q4	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	7772000	USD
CY2017	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	29768000	USD
CY2017Q4	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	3700000	USD
CY2016Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	25181000	USD
CY2017Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	26431000	USD
CY2015	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-1069000	USD
CY2016	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	2747000	USD
CY2017	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	38000	USD
CY2015	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	USD
CY2016	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	10695000	USD
CY2017	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1096518000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1313657000	USD
CY2016Q4	us-gaap	Secured Debt SecuredDebt	130078000	USD
CY2017Q4	us-gaap	Secured Debt SecuredDebt	158561000	USD
CY2014Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	8435000	USD
CY2015Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	9092000	USD
CY2016Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	19103000	USD
CY2017Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	33676000	USD
CY2015	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	213000	USD
CY2016	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	-755000	USD
CY2017	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	-1173000	USD
CY2015	us-gaap	Servicing Asset At Fair Value Disposals ServicingAssetAtFairValueDisposals	1315000	USD
CY2016	us-gaap	Servicing Asset At Fair Value Disposals ServicingAssetAtFairValueDisposals	2325000	USD
CY2017	us-gaap	Servicing Asset At Fair Value Disposals ServicingAssetAtFairValueDisposals	2595000	USD
CY2015	us-gaap	Servicing Asset At Fair Value Period Increase Decrease ServicingAssetAtFairValuePeriodIncreaseDecrease	-213000	USD
CY2016	us-gaap	Servicing Asset At Fair Value Period Increase Decrease ServicingAssetAtFairValuePeriodIncreaseDecrease	3405000	USD
CY2017	us-gaap	Servicing Asset At Fair Value Period Increase Decrease ServicingAssetAtFairValuePeriodIncreaseDecrease	1857000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	9656000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	9303000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	12858000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	7900000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	8400000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	12900000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.009
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.009
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.013
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.013
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.265
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.252
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	4000000	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	720580	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	703892	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	562810	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	37.64
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	39.62
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	41.82
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2500000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	5800000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	20100000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	312162	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	101088	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	20697	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	502517	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	562166	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	9.72
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	8.61
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	11433000	USD
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	52790000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	43817000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1618426	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1551734	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1698912	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1084756	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	43.00
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	41.32
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	41.50
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	41.98
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	1065809	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	43056000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	41.97
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	42.82
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	37.71
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	40.57
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	52.53
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	48.00
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	42.83
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	44.36
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	41.04
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.00
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y6M
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y6M
CY2015Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	8045000	USD
CY2016Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	23195000	USD
CY2017Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	22820000	USD
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y1M6D
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y4M24D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y4M0D
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y4M24D
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y7M6D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y0M0D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P4Y0M0D
CY2016Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	61809000	USD
CY2017Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	17209000	USD
CY2017Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	317700000	USD
CY2016Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	3000000	shares
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	273411	shares
CY2016	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	313900	shares
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	593459	shares
CY2015	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	38723000	USD
CY2015	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2750000	USD
CY2016	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2637000	USD
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2530000	USD
CY2015	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	1683000	USD
CY2016	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	1576000	USD
CY2017	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	1625000	USD
CY2016	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	152911000	USD
CY2015	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	38723000	USD
CY2016	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	0	USD
CY2017	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	0	USD
CY2015	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-243000	USD
CY2016	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	1000	USD
CY2017	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-397000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	2069822000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	2352274000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	2695617000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2976939000	USD
CY2015Q4	us-gaap	Subordinated Debt SubordinatedDebt	138900000	USD
CY2016Q4	us-gaap	Subordinated Debt SubordinatedDebt	139000000	USD
CY2016Q4	us-gaap	Subordinated Debt SubordinatedDebt	138971000	USD
CY2017Q4	us-gaap	Subordinated Debt SubordinatedDebt	139100000	USD
CY2017Q4	us-gaap	Subordinated Debt SubordinatedDebt	139088000	USD
CY2017Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.04	Rate
CY2017Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.05	Rate
CY2016Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.089	Rate
CY2017Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.093	Rate
CY2017Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.06	Rate
CY2017Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.08	Rate
CY2016Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.097	Rate
CY2017Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.099	Rate
CY2016Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	733000	USD
CY2017Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	314000	USD
CY2016Q4	us-gaap	Time Deposit Maturities Next Rolling Twelve Months TimeDepositMaturitiesNextRollingTwelveMonths	2803509000	USD
CY2017Q4	us-gaap	Time Deposit Maturities Next Rolling Twelve Months TimeDepositMaturitiesNextRollingTwelveMonths	3167220000	USD
CY2016Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	58181000	USD
CY2017Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	44206000	USD
CY2016Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	87509000	USD
CY2017Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	98952000	USD
CY2016Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	151283000	USD
CY2017Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	127548000	USD
CY2016Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	1173688000	USD
CY2017Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	969130000	USD
CY2016Q4	us-gaap	Time Deposits TimeDeposits	4274903000	USD
CY2017Q4	us-gaap	Time Deposits TimeDeposits	4407370000	USD
CY2016Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	2744325000	USD
CY2017Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	2915950000	USD
CY2015	us-gaap	Trading Gains Losses TradingGainsLosses	-247000	USD
CY2016	us-gaap	Trading Gains Losses TradingGainsLosses	91000	USD
CY2017	us-gaap	Trading Gains Losses TradingGainsLosses	-845000	USD
CY2016Q4	us-gaap	Trading Securities TradingSecurities	1989000	USD
CY2017Q4	us-gaap	Trading Securities TradingSecurities	995000	USD
CY2015	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	28565000	USD
CY2016	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	13352000	USD
CY2017	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	15013000	USD
CY2016Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	97749	shares
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	103013	shares
CY2016Q4	us-gaap	Treasury Stock Value TreasuryStockValue	4589000	USD
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	4986000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	11626000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10821000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	805000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	11626000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	521000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	921000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	8500000	USD
CY2015	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	4099000	shares
CY2016	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3994000	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1983000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	51937000	shares
CY2016	wtfc	Certain Loans Acquired Acquisitions CertainLoansAcquiredAcquisitions	2462000	USD
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	54272000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	56686000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47838000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50278000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	54703000	shares
CY2015	wtfc	Accretion Amortization Of Discount Premium On Loans AccretionAmortizationOfDiscountPremiumOnLoans	34378000	USD
CY2016	wtfc	Accretion Amortization Of Discount Premium On Loans AccretionAmortizationOfDiscountPremiumOnLoans	35571000	USD
CY2017	wtfc	Accretion Amortization Of Discount Premium On Loans AccretionAmortizationOfDiscountPremiumOnLoans	22784000	USD
CY2016Q4	wtfc	Allowance For Unfunded Lending Related Commitments AllowanceForUnfundedLendingRelatedCommitments	1673000	USD
CY2017Q4	wtfc	Allowance For Unfunded Lending Related Commitments AllowanceForUnfundedLendingRelatedCommitments	1269000	USD
CY2016	wtfc	Allowancefor Covered Loan Losses Subsequentto Loss Share AllowanceforCoveredLoanLossesSubsequenttoLossShare	156000	USD
CY2017	wtfc	Allowancefor Covered Loan Losses Subsequentto Loss Share AllowanceforCoveredLoanLossesSubsequenttoLossShare	742000	USD
CY2017	wtfc	Assets Nonrecurring Fair Value Losses Recognized AssetsNonrecurringFairValueLossesRecognized	15652000	USD
CY2015	wtfc	Available For Sale Securities Transferred To Held To Maturity Securities AvailableForSaleSecuritiesTransferredToHeldToMaturitySecurities	862712000	USD
CY2016	wtfc	Available For Sale Securities Transferred To Held To Maturity Securities AvailableForSaleSecuritiesTransferredToHeldToMaturitySecurities	0	USD
CY2017	wtfc	Available For Sale Securities Transferred To Held To Maturity Securities AvailableForSaleSecuritiesTransferredToHeldToMaturitySecurities	0	USD
CY2015	wtfc	Bank Owned Life Insurance Net Of Claims BankOwnedLifeInsuranceNetOfClaims	3146000	USD
CY2016	wtfc	Bank Owned Life Insurance Net Of Claims BankOwnedLifeInsuranceNetOfClaims	3594000	USD
CY2017	wtfc	Bank Owned Life Insurance Net Of Claims BankOwnedLifeInsuranceNetOfClaims	3524000	USD
CY2016	wtfc	Benefit Attributable To Federal Deposit Insurance Corporation Loss Share Agreements BenefitAttributableToFederalDepositInsuranceCorporationLossShareAgreements	2949000	USD
CY2017	wtfc	Benefit Attributable To Federal Deposit Insurance Corporation Loss Share Agreements BenefitAttributableToFederalDepositInsuranceCorporationLossShareAgreements	1592000	USD
CY2015	wtfc	Brokerage Trust And Asset Management Revenue BrokerageTrustAndAssetManagementRevenue	73452000	USD
CY2016	wtfc	Brokerage Trust And Asset Management Revenue BrokerageTrustAndAssetManagementRevenue	76018000	USD
CY2017	wtfc	Brokerage Trust And Asset Management Revenue BrokerageTrustAndAssetManagementRevenue	81766000	USD
CY2016	wtfc	Certain Loans Acquired Accretable Yield Amortized To Indemnification Asset CertainLoansAcquiredAccretableYieldAmortizedToIndemnificationAsset	5746000	USD
CY2017	wtfc	Certain Loans Acquired Accretable Yield Amortized To Indemnification Asset CertainLoansAcquiredAccretableYieldAmortizedToIndemnificationAsset	1087000	USD
CY2017	wtfc	Certain Loans Acquired Acquisitions CertainLoansAcquiredAcquisitions	426000	USD
CY2017Q4	wtfc	Common Equity Tier One Capital Requiredfor Capital Adequacyto Risk Weighted Assets CommonEquityTierOneCapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.045	Rate
CY2017Q4	wtfc	Common Equity Tier One Capital Requiredtobe Well Capitalizedto Risk Weighted Assets CommonEquityTierOneCapitalRequiredtobeWellCapitalizedtoRiskWeightedAssets	0.065	Rate
CY2016Q4	wtfc	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.086	Rate
CY2017Q4	wtfc	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.094	Rate
CY2017Q4	wtfc	Common Securities Proportion To Junior Subordinated Debentures CommonSecuritiesProportionToJuniorSubordinatedDebentures	0.03
CY2017Q4	wtfc	Consecutive Quarters Of Deferred Payment ConsecutiveQuartersOfDeferredPayment	20	quarter
CY2016Q4	wtfc	Covered Loans90 Days Past Due And Still Accruing CoveredLoans90DaysPastDueAndStillAccruing	2492000	USD
CY2016	wtfc	Covered Loans Charged Off CoveredLoansChargedOff	1410000	USD
CY2017	wtfc	Covered Loans Charged Off CoveredLoansChargedOff	517000	USD
CY2016Q4	wtfc	Covered Loans Current CoveredLoansCurrent	51754000	USD
CY2016	wtfc	Covered Loans Net Charge Offs CoveredLoansNetChargeOffs	-1982000	USD
CY2017	wtfc	Covered Loans Net Charge Offs CoveredLoansNetChargeOffs	-483000	USD
CY2016Q4	wtfc	Covered Loans Nonaccrual CoveredLoansNonaccrual	2121000	USD
CY2017Q4	wtfc	Customer Balances Maintained By Clearing Broker And Subject To Indemnification CustomerBalancesMaintainedByClearingBrokerAndSubjectToIndemnification	15200000	USD
CY2017Q4	wtfc	Deferred Tax Assets Covered Assets DeferredTaxAssetsCoveredAssets	0	USD
CY2017Q4	wtfc	Derivative Asset Fair Value Gross Liability Not Offset In Statement Of Financial Condition DerivativeAssetFairValueGrossLiabilityNotOffsetInStatementOfFinancialCondition	14878000	USD
CY2016Q4	wtfc	Derivative Liability Fair Value Gross Asset Not Offset In Statement Of Financial Condition DerivativeLiabilityFairValueGrossAssetNotOffsetInStatementOfFinancialCondition	14441000	USD
CY2017Q4	wtfc	Derivative Liability Fair Value Gross Asset Not Offset In Statement Of Financial Condition DerivativeLiabilityFairValueGrossAssetNotOffsetInStatementOfFinancialCondition	14878000	USD
CY2017	wtfc	Effective Income Tax Rate Reconciliation Sharebased Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitAmount	6200000	USD
CY2017Q4	wtfc	Excess Pledged Collateral ExcessPledgedCollateral	27053000	USD
CY2016	wtfc	Fdic Indemnification Asset Cash Payments Received And Terminationof Loss Share Agreements FDICIndemnificationAssetCashPaymentsReceivedAndTerminationofLossShareAgreements	-1207000	USD
CY2016Q4	wtfc	Deferred Discounts Finance Chargesand Interestand Other Adjustments Includedin Receivables DeferredDiscountsFinanceChargesandInterestandOtherAdjustmentsIncludedinReceivables	2600000	USD
CY2017Q4	wtfc	Deferred Discounts Finance Chargesand Interestand Other Adjustments Includedin Receivables DeferredDiscountsFinanceChargesandInterestandOtherAdjustmentsIncludedinReceivables	9300000	USD
CY2016Q4	wtfc	Deferred Tax Asset Discount On Purchased Loans DeferredTaxAssetDiscountOnPurchasedLoans	5055000	USD
CY2017Q4	wtfc	Deferred Tax Asset Discount On Purchased Loans DeferredTaxAssetDiscountOnPurchasedLoans	4943000	USD
CY2016Q4	wtfc	Deferred Tax Assets Allowance For Credit Losses DeferredTaxAssetsAllowanceForCreditLosses	46519000	USD
CY2017Q4	wtfc	Deferred Tax Assets Allowance For Credit Losses DeferredTaxAssetsAllowanceForCreditLosses	36442000	USD
CY2016Q4	wtfc	Deferred Tax Assets Covered Assets DeferredTaxAssetsCoveredAssets	18484000	USD
CY2016Q4	wtfc	Deferred Tax Assets Mortgage Banking Recourse Obligation DeferredTaxAssetsMortgageBankingRecourseObligation	2025000	USD
CY2017Q4	wtfc	Deferred Tax Assets Mortgage Banking Recourse Obligation DeferredTaxAssetsMortgageBankingRecourseObligation	722000	USD
CY2016Q4	wtfc	Deferred Tax Assets Nonaccrued Interest DeferredTaxAssetsNonaccruedInterest	1884000	USD
CY2017Q4	wtfc	Deferred Tax Assets Nonaccrued Interest DeferredTaxAssetsNonaccruedInterest	983000	USD
CY2016Q4	wtfc	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	7151000	USD
CY2017Q4	wtfc	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	4019000	USD
CY2016Q4	wtfc	Deferred Tax Liabilities Deferred Loan Fees And Costs DeferredTaxLiabilitiesDeferredLoanFeesAndCosts	5131000	USD
CY2017Q4	wtfc	Deferred Tax Liabilities Deferred Loan Fees And Costs DeferredTaxLiabilitiesDeferredLoanFeesAndCosts	3531000	USD
CY2016Q4	wtfc	Deferred Tax Liabilities Fair Value Adjustment On Loans DeferredTaxLiabilitiesFairValueAdjustmentOnLoans	3163000	USD
CY2017Q4	wtfc	Deferred Tax Liabilities Fair Value Adjustment On Loans DeferredTaxLiabilitiesFairValueAdjustmentOnLoans	3143000	USD
CY2016Q4	wtfc	Deferred Tax Liabilities Fhlb Stock Dividends DeferredTaxLiabilitiesFhlbStockDividends	346000	USD
CY2017Q4	wtfc	Deferred Tax Liabilities Fhlb Stock Dividends DeferredTaxLiabilitiesFhlbStockDividends	0	USD
CY2016Q4	wtfc	Deferred Tax Liabilities Net Unrealized Losses On Derivatives Included In Other Comprehensive Income DeferredTaxLiabilitiesNetUnrealizedLossesOnDerivativesIncludedInOtherComprehensiveIncome	2732000	USD
CY2017Q4	wtfc	Deferred Tax Liabilities Net Unrealized Losses On Derivatives Included In Other Comprehensive Income DeferredTaxLiabilitiesNetUnrealizedLossesOnDerivativesIncludedInOtherComprehensiveIncome	3197000	USD
CY2016Q4	wtfc	Deposits No Wand Interest Bearing Demand Deposits DepositsNOWandInterestBearingDemandDeposits	2624442000	USD
CY2017Q4	wtfc	Deposits No Wand Interest Bearing Demand Deposits DepositsNOWandInterestBearingDemandDeposits	2315055000	USD
CY2016Q4	wtfc	Deposits Percentage DepositsPercentage	1
CY2017Q4	wtfc	Deposits Percentage DepositsPercentage	1
CY2016Q4	wtfc	Derivative Asset Fair Value Gross Liability Not Offset In Statement Of Financial Condition DerivativeAssetFairValueGrossLiabilityNotOffsetInStatementOfFinancialCondition	14441000	USD
CY2017	wtfc	Fdic Indemnification Asset Cash Payments Received And Terminationof Loss Share Agreements FDICIndemnificationAssetCashPaymentsReceivedAndTerminationofLossShareAgreements	15796000	USD
CY2015	wtfc	Fdic Indemnification Asset Gainon Terminationof Loss Share Agreement FDICIndemnificationAssetGainonTerminationofLossShareAgreement	0	USD
CY2016	wtfc	Fdic Indemnification Asset Gainon Terminationof Loss Share Agreement FDICIndemnificationAssetGainonTerminationofLossShareAgreement	0	USD
CY2017	wtfc	Fdic Indemnification Asset Gainon Terminationof Loss Share Agreement FDICIndemnificationAssetGainonTerminationofLossShareAgreement	385000	USD
CY2016	wtfc	Fdic Indemnification Assets Amortization FDICIndemnificationAssetsAmortization	-1388000	USD
CY2017	wtfc	Fdic Indemnification Assets Amortization FDICIndemnificationAssetsAmortization	-1044000	USD
CY2015Q4	wtfc	Fdic Indemnification Liability Asset FDICIndemnificationLiabilityAsset	6100000	USD
CY2016Q4	wtfc	Fdic Indemnification Liability Asset FDICIndemnificationLiabilityAsset	16701000	USD
CY2017Q4	wtfc	Fdic Indemnification Liability Asset FDICIndemnificationLiabilityAsset	0	USD
CY2017Q4	wtfc	Fdic Indemnification Liability Cash Proceeds From Payments To FDICIndemnificationLiabilityCashProceedsFromPaymentsTo	15200000	USD
CY2017	wtfc	Fdic Loss Sharing Agreement Percentage FDICLossSharingAgreementPercentage	0.8
CY2017Q4	wtfc	Federal Home Loan Bank Advances Having Varying Put Dates FederalHomeLoanBankAdvancesHavingVaryingPutDates	165000000	USD
CY2015	wtfc	Fees From Covered Call Options FeesFromCoveredCallOptions	15364000	USD
CY2016	wtfc	Fees From Covered Call Options FeesFromCoveredCallOptions	11470000	USD
CY2017	wtfc	Fees From Covered Call Options FeesFromCoveredCallOptions	4402000	USD
CY2016	wtfc	Financing Receivable Allowance For Credit Losses Other Adjustments FinancingReceivableAllowanceForCreditLossesOtherAdjustments	-291000	USD
CY2017	wtfc	Financing Receivable Allowance For Credit Losses Other Adjustments FinancingReceivableAllowanceForCreditLossesOtherAdjustments	573000	USD
CY2015	wtfc	Financing Receivables Modifications Weighted Average Extension Term FinancingReceivablesModificationsWeightedAverageExtensionTerm	P45M
CY2016	wtfc	Financing Receivables Modifications Weighted Average Extension Term FinancingReceivablesModificationsWeightedAverageExtensionTerm	P19M
CY2017	wtfc	Financing Receivables Modifications Weighted Average Extension Term FinancingReceivablesModificationsWeightedAverageExtensionTerm	P35M
CY2015	wtfc	Financing Receivables Modifications Weighted Average Interest Only Term FinancingReceivablesModificationsWeightedAverageInterestOnlyTerm	P17M
CY2016	wtfc	Financing Receivables Modifications Weighted Average Interest Only Term FinancingReceivablesModificationsWeightedAverageInterestOnlyTerm	P7M
CY2017	wtfc	Financing Receivables Modifications Weighted Average Interest Only Term FinancingReceivablesModificationsWeightedAverageInterestOnlyTerm	P11M
CY2017	wtfc	Impaired Loans Fair Value Losses Recognized ImpairedLoansFairValueLossesRecognized	13683000	USD
CY2015	wtfc	Increase Decrease In Tax Resulting From Income Earned On Bank Owned Life Insurance IncreaseDecreaseInTaxResultingFromIncomeEarnedOnBankOwnedLifeInsurance	-1562000	USD
CY2016	wtfc	Increase Decrease In Tax Resulting From Income Earned On Bank Owned Life Insurance IncreaseDecreaseInTaxResultingFromIncomeEarnedOnBankOwnedLifeInsurance	-1198000	USD
CY2017	wtfc	Increase Decrease In Tax Resulting From Income Earned On Bank Owned Life Insurance IncreaseDecreaseInTaxResultingFromIncomeEarnedOnBankOwnedLifeInsurance	-1167000	USD
CY2016	wtfc	Increase In Fdic Indemnification Asset IncreaseInFdicIndemnificationAsset	2949000	USD
CY2017	wtfc	Increase In Fdic Indemnification Asset IncreaseInFdicIndemnificationAsset	1592000	USD
CY2015	wtfc	Interest Income Federal Home Loan Banks And Federal Reserve Bank Stock InterestIncomeFederalHomeLoanBanksAndFederalReserveBankStock	3232000	USD
CY2016	wtfc	Interest Income Federal Home Loan Banks And Federal Reserve Bank Stock InterestIncomeFederalHomeLoanBanksAndFederalReserveBankStock	4287000	USD
CY2017	wtfc	Interest Income Federal Home Loan Banks And Federal Reserve Bank Stock InterestIncomeFederalHomeLoanBanksAndFederalReserveBankStock	4370000	USD
CY2015	wtfc	Interest Income On Brokerage Customer Receivables InterestIncomeOnBrokerageCustomerReceivables	797000	USD
CY2016	wtfc	Interest Income On Brokerage Customer Receivables InterestIncomeOnBrokerageCustomerReceivables	816000	USD
CY2017	wtfc	Interest Income On Brokerage Customer Receivables InterestIncomeOnBrokerageCustomerReceivables	623000	USD
CY2016Q4	wtfc	Investment Securities Pledged As Collateral InvestmentSecuritiesPledgedAsCollateral	1400000000	USD
CY2017Q4	wtfc	Investment Securities Pledged As Collateral InvestmentSecuritiesPledgedAsCollateral	1700000000	USD
CY2015	wtfc	Issuance Of Common Shares Resulting From Exercise Of Stock Options Employee Stock Purchase Plan And Conversion Of Common Stock Warrants IssuanceOfCommonSharesResultingFromExerciseOfStockOptionsEmployeeStockPurchasePlanAndConversionOfCommonStockWarrants	16119000	USD
CY2016	wtfc	Issuance Of Common Shares Resulting From Exercise Of Stock Options Employee Stock Purchase Plan And Conversion Of Common Stock Warrants IssuanceOfCommonSharesResultingFromExerciseOfStockOptionsEmployeeStockPurchasePlanAndConversionOfCommonStockWarrants	15828000	USD
CY2017	wtfc	Issuance Of Common Shares Resulting From Exercise Of Stock Options Employee Stock Purchase Plan And Conversion Of Common Stock Warrants IssuanceOfCommonSharesResultingFromExerciseOfStockOptionsEmployeeStockPurchasePlanAndConversionOfCommonStockWarrants	28229000	USD
CY2016Q4	wtfc	Liability For Loss Indemnification Claims On Residential Mortgage Loans Previously Sold To Investors LiabilityForLossIndemnificationClaimsOnResidentialMortgageLoansPreviouslySoldToInvestors	4200000	USD
CY2017Q4	wtfc	Liability For Loss Indemnification Claims On Residential Mortgage Loans Previously Sold To Investors LiabilityForLossIndemnificationClaimsOnResidentialMortgageLoansPreviouslySoldToInvestors	3000000	USD
CY2015	wtfc	Loan Forgiveness LoanForgiveness	0	USD
CY2016	wtfc	Loan Forgiveness LoanForgiveness	300000	USD
CY2017	wtfc	Loan Forgiveness LoanForgiveness	73000	USD
CY2016Q4	wtfc	Loans And Leases Receivable Net Of Deferred Income Including Covered Loans LoansAndLeasesReceivableNetOfDeferredIncomeIncludingCoveredLoans	19761317000	USD
CY2017Q4	wtfc	Loans And Leases Receivable Net Of Deferred Income Including Covered Loans LoansAndLeasesReceivableNetOfDeferredIncomeIncludingCoveredLoans	21640797000	USD
CY2016Q4	wtfc	Loans Net Of Unearned Income Excluding Covered Loans90 Days Past Due And Still Accruing LoansNetOfUnearnedIncomeExcludingCoveredLoans90DaysPastDueAndStillAccruing	31246000	USD
CY2016Q4	wtfc	Loans Net Of Unearned Income Excluding Covered Loans Current LoansNetOfUnearnedIncomeExcludingCoveredLoansCurrent	19456994000	USD
CY2016Q4	wtfc	Loans Net Of Unearned Income Excluding Covered Loans Nonaccrual Status LoansNetOfUnearnedIncomeExcludingCoveredLoansNonaccrualStatus	75457000	USD
CY2016	wtfc	Losses Charged Against Indemnification Liability LossesChargedAgainstIndemnificationLiability	552000	USD
CY2017	wtfc	Losses Charged Against Indemnification Liability LossesChargedAgainstIndemnificationLiability	1400000	USD
CY2015	wtfc	Marketable Securities Gross Realized Gains Excluding Other Than Temporary Impairments MarketableSecuritiesGrossRealizedGainsExcludingOtherThanTemporaryImpairments	658000	USD
CY2016	wtfc	Marketable Securities Gross Realized Gains Excluding Other Than Temporary Impairments MarketableSecuritiesGrossRealizedGainsExcludingOtherThanTemporaryImpairments	9399000	USD
CY2017	wtfc	Marketable Securities Gross Realized Gains Excluding Other Than Temporary Impairments MarketableSecuritiesGrossRealizedGainsExcludingOtherThanTemporaryImpairments	147000	USD
CY2015	wtfc	Marketable Securities Gross Realized Losses Excluding Other Than Temporary Impairments MarketableSecuritiesGrossRealizedLossesExcludingOtherThanTemporaryImpairments	335000	USD
CY2016	wtfc	Marketable Securities Gross Realized Losses Excluding Other Than Temporary Impairments MarketableSecuritiesGrossRealizedLossesExcludingOtherThanTemporaryImpairments	1754000	USD
CY2017	wtfc	Marketable Securities Gross Realized Losses Excluding Other Than Temporary Impairments MarketableSecuritiesGrossRealizedLossesExcludingOtherThanTemporaryImpairments	102000	USD
CY2016Q4	wtfc	No Wand Interest Bearing Demand Deposits Percentage NOWandInterestBearingDemandDepositsPercentage	0.12
CY2017Q4	wtfc	No Wand Interest Bearing Demand Deposits Percentage NOWandInterestBearingDemandDepositsPercentage	0.10
CY2016	wtfc	Net Provision For Covered Loan Losses NetProvisionForCoveredLoanLosses	-737000	USD
CY2017	wtfc	Net Provision For Covered Loan Losses NetProvisionForCoveredLoanLosses	-213000	USD
CY2016Q4	wtfc	Non Interest Bearing Percentage NonInterestBearingPercentage	0.27
CY2017Q4	wtfc	Non Interest Bearing Percentage NonInterestBearingPercentage	0.29
CY2016Q1	wtfc	Non Interest Income Excluding Net Securities Losses Gains NonInterestIncomeExcludingNetSecuritiesLossesGains	67427000	USD
CY2016Q2	wtfc	Non Interest Income Excluding Net Securities Losses Gains NonInterestIncomeExcludingNetSecuritiesLossesGains	83359000	USD
CY2016Q3	wtfc	Non Interest Income Excluding Net Securities Losses Gains NonInterestIncomeExcludingNetSecuritiesLossesGains	83299000	USD
CY2016Q4	wtfc	Non Interest Income Excluding Net Securities Losses Gains NonInterestIncomeExcludingNetSecuritiesLossesGains	83700000	USD
CY2017Q1	wtfc	Non Interest Income Excluding Net Securities Losses Gains NonInterestIncomeExcludingNetSecuritiesLossesGains	68820000	USD
CY2017Q2	wtfc	Non Interest Income Excluding Net Securities Losses Gains NonInterestIncomeExcludingNetSecuritiesLossesGains	89925000	USD
CY2017Q3	wtfc	Non Interest Income Excluding Net Securities Losses Gains NonInterestIncomeExcludingNetSecuritiesLossesGains	79692000	USD
CY2017Q4	wtfc	Non Interest Income Excluding Net Securities Losses Gains NonInterestIncomeExcludingNetSecuritiesLossesGains	81024000	USD
CY2016Q4	wtfc	Number Of Covered Call Option Contracts Outstanding NumberOfCoveredCallOptionContractsOutstanding	0
CY2017Q4	wtfc	Number Of Covered Call Option Contracts Outstanding NumberOfCoveredCallOptionContractsOutstanding	0
CY2017Q4	wtfc	Number Of Securities By Single Non Goverment Sponsored Issuer Exceeding10 Of Shareholders Equity NumberOfSecuritiesBySingleNonGovermentSponsoredIssuerExceeding10OfShareholdersEquity	0	securities
CY2017Q4	wtfc	Number Of Subsidiaries NumberOfSubsidiaries	15	subsidiary
CY2017Q4	wtfc	Number Of Unconsolidated Subsidiary Trusts NumberOfUnconsolidatedSubsidiaryTrusts	11	trust
CY2015	wtfc	Other Comprehensive Income Loss Securities Transferred From Available For Sale To Held To Maturity Adjustment Before Tax OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentBeforeTax	-128000	USD
CY2016	wtfc	Other Comprehensive Income Loss Securities Transferred From Available For Sale To Held To Maturity Adjustment Before Tax OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentBeforeTax	-17386000	USD
CY2017	wtfc	Other Comprehensive Income Loss Securities Transferred From Available For Sale To Held To Maturity Adjustment Before Tax OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentBeforeTax	1479000	USD
CY2015	wtfc	Other Comprehensive Income Loss Securities Transferred From Available For Sale To Held To Maturity Adjustment Net Of Tax OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentNetOfTax	-78000	USD
CY2016	wtfc	Other Comprehensive Income Loss Securities Transferred From Available For Sale To Held To Maturity Adjustment Net Of Tax OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentNetOfTax	-10560000	USD
CY2017	wtfc	Other Comprehensive Income Loss Securities Transferred From Available For Sale To Held To Maturity Adjustment Net Of Tax OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentNetOfTax	894000	USD
CY2015	wtfc	Other Comprehensive Income Loss Securities Transferred From Available For Sale To Held To Maturity Adjustment Tax Effect OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentTaxEffect	-50000	USD
CY2016	wtfc	Other Comprehensive Income Loss Securities Transferred From Available For Sale To Held To Maturity Adjustment Tax Effect OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentTaxEffect	-6826000	USD
CY2017	wtfc	Other Comprehensive Income Loss Securities Transferred From Available For Sale To Held To Maturity Adjustment Tax Effect OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentTaxEffect	585000	USD
CY2017Q4	wtfc	Ownership Interest Percentage In Unconsolidated Subsidary Trusts OwnershipInterestPercentageInUnconsolidatedSubsidaryTrusts	1
CY2015	wtfc	Payments Proceeds Received From The Fdic For Indemnification PaymentsProceedsReceivedFromTheFDICForIndemnification	1859000	USD
CY2016	wtfc	Payments Proceeds Received From The Fdic For Indemnification PaymentsProceedsReceivedFromTheFDICForIndemnification	1207000	USD
CY2017	wtfc	Payments Proceeds Received From The Fdic For Indemnification PaymentsProceedsReceivedFromTheFDICForIndemnification	-15411000	USD
CY2016Q4	wtfc	Percentage Of Covered Loans PercentageOfCoveredLoans	0.00
CY2017Q4	wtfc	Percentage Of Covered Loans PercentageOfCoveredLoans	0.00
CY2016Q4	wtfc	Percentage Of Loans And Leases Receivable Gross Carrying Amount PercentageOfLoansAndLeasesReceivableGrossCarryingAmount	1.00
CY2017Q4	wtfc	Percentage Of Loans And Leases Receivable Gross Carrying Amount PercentageOfLoansAndLeasesReceivableGrossCarryingAmount	1.00
CY2016Q4	wtfc	Percentage Of Loans Net Of Unearned Income Including Covered Loans PercentageOfLoansNetOfUnearnedIncomeIncludingCoveredLoans	1
CY2017Q4	wtfc	Percentage Of Loans Net Of Unearned Income Including Covered Loans PercentageOfLoansNetOfUnearnedIncomeIncludingCoveredLoans	1
CY2015	wtfc	Proceeds From Calls Of Held To Maturity Securities ProceedsFromCallsOfHeldToMaturitySecurities	770000	USD
CY2016	wtfc	Proceeds From Calls Of Held To Maturity Securities ProceedsFromCallsOfHeldToMaturitySecurities	734326000	USD
CY2017	wtfc	Proceeds From Calls Of Held To Maturity Securities ProceedsFromCallsOfHeldToMaturitySecurities	51090000	USD
CY2015	wtfc	Proceeds From Maturities Of Held To Maturity Securities ProceedsFromMaturitiesOfHeldToMaturitySecurities	55000	USD
CY2016	wtfc	Proceeds From Maturities Of Held To Maturity Securities ProceedsFromMaturitiesOfHeldToMaturitySecurities	710000	USD
CY2017	wtfc	Proceeds From Maturities Of Held To Maturity Securities ProceedsFromMaturitiesOfHeldToMaturitySecurities	57908000	USD
CY2015	wtfc	Proceeds From Payments To Federal Home Loan Bank Borrowings ProceedsFromPaymentsToFederalHomeLoanBankBorrowings	115186000	USD
CY2016	wtfc	Proceeds From Payments To Federal Home Loan Bank Borrowings ProceedsFromPaymentsToFederalHomeLoanBankBorrowings	-707594000	USD
CY2017	wtfc	Proceeds From Payments To Federal Home Loan Bank Borrowings ProceedsFromPaymentsToFederalHomeLoanBankBorrowings	403000000	USD
CY2016	wtfc	Provision For Covered Loan Losses Before Benefit Attributable To Fdic Loss Share Agreements ProvisionForCoveredLoanLossesBeforeBenefitAttributableToFdicLossShareAgreements	3530000	USD
CY2017	wtfc	Provision For Covered Loan Losses Before Benefit Attributable To Fdic Loss Share Agreements ProvisionForCoveredLoanLossesBeforeBenefitAttributableToFdicLossShareAgreements	1063000	USD
CY2017	wtfc	Real Estate Acquired Through Foreclosure Fair Value Losses Recognized RealEstateAcquiredThroughForeclosureFairValueLossesRecognized	1969000	USD
CY2015	wtfc	Reclassification From Accumulated Other Comprehensive Income Amortization Of Unrealized Gains Losses On Investment Securities Transferred To Held To Maturity From Available For Sale Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeAmortizationOfUnrealizedGainsLossesOnInvestmentSecuritiesTransferredToHeldToMaturityFromAvailableForSaleNetOfTax	-78000	USD
CY2016	wtfc	Reclassification From Accumulated Other Comprehensive Income Amortization Of Unrealized Gains Losses On Investment Securities Transferred To Held To Maturity From Available For Sale Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeAmortizationOfUnrealizedGainsLossesOnInvestmentSecuritiesTransferredToHeldToMaturityFromAvailableForSaleNetOfTax	-10560000	USD
CY2017	wtfc	Reclassification From Accumulated Other Comprehensive Income Amortization Of Unrealized Gains Losses On Investment Securities Transferred To Held To Maturity From Available For Sale Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeAmortizationOfUnrealizedGainsLossesOnInvestmentSecuritiesTransferredToHeldToMaturityFromAvailableForSaleNetOfTax	894000	USD
CY2016	wtfc	Reclassification To From Allowance For Unfunded Lending Related Commitments ReclassificationToFromAllowanceForUnfundedLendingRelatedCommitments	-725000	USD
CY2017	wtfc	Reclassification To From Allowance For Unfunded Lending Related Commitments ReclassificationToFromAllowanceForUnfundedLendingRelatedCommitments	69000	USD
CY2016	wtfc	Recoveries Of Covered Loans Charged Off RecoveriesOfCoveredLoansChargedOff	3392000	USD
CY2017	wtfc	Recoveries Of Covered Loans Charged Off RecoveriesOfCoveredLoansChargedOff	1000000	USD
CY2015	wtfc	Servicing Assets At Fair Value Additions From Loans Sold With Servicing Retained ServicingAssetsAtFairValueAdditionsFromLoansSoldWithServicingRetained	1759000	USD
CY2016	wtfc	Servicing Assets At Fair Value Additions From Loans Sold With Servicing Retained ServicingAssetsAtFairValueAdditionsFromLoansSoldWithServicingRetained	13091000	USD
CY2017	wtfc	Servicing Assets At Fair Value Additions From Loans Sold With Servicing Retained ServicingAssetsAtFairValueAdditionsFromLoansSoldWithServicingRetained	18341000	USD
CY2015	wtfc	Share Based Compensation Arrangement By Share Based Payment Conversion Of Options Of Acquired Company ShareBasedCompensationArrangementByShareBasedPaymentConversionOfOptionsOfAcquiredCompany	16364	shares
CY2015	wtfc	Share Based Compensation Arrangement By Share Based Payment Conversion Of Options Of Acquired Company Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentConversionOfOptionsOfAcquiredCompanyWeightedAverageExercisePrice	21.18
CY2015	wtfc	Stock Issued During Period Value Stock Options And Warrants Exercised StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercised	9606000	USD
CY2016	wtfc	Stock Issued During Period Value Stock Options And Warrants Exercised StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercised	11228000	USD
CY2017	wtfc	Stock Issued During Period Value Stock Options And Warrants Exercised StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercised	24074000	USD
CY2014	wtfc	Subordinated Debt Issued Gross SubordinatedDebtIssuedGross	140000000	USD
CY2017	wtfc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit	-7600000	USD
CY2016Q4	wtfc	Time Deposits Two Hundred Fifty Thousand Dollars Or More TimeDepositsTwoHundredFiftyThousandDollarsOrMore	1200000000	USD
CY2017Q4	wtfc	Time Deposits Two Hundred Fifty Thousand Dollars Or More TimeDepositsTwoHundredFiftyThousandDollarsOrMore	1300000000	USD
CY2016Q4	wtfc	Trade Date Securities Receivable TradeDateSecuritiesReceivable	0	USD
CY2017Q4	wtfc	Trade Date Securities Receivable TradeDateSecuritiesReceivable	90014000	USD
CY2017Q4	wtfc	Trust Preferred Securities Proportion To Junior Subordinated Debentures TrustPreferredSecuritiesProportionToJuniorSubordinatedDebentures	0.97
CY2017Q4	wtfc	Unfunded Commitments To Invest In Partnerships UnfundedCommitmentsToInvestInPartnerships	9500000	USD
CY2015	wtfc	Value Ascribed To Goodwill And Other Intangible Assets ValueAscribedToGoodwillAndOtherIntangibleAssets	79879000	USD
CY2016	wtfc	Value Ascribed To Goodwill And Other Intangible Assets ValueAscribedToGoodwillAndOtherIntangibleAssets	27083000	USD
CY2017	wtfc	Value Ascribed To Goodwill And Other Intangible Assets ValueAscribedToGoodwillAndOtherIntangibleAssets	999000	USD
CY2016Q4	wtfc	Wealth Management Deposits WealthManagementDeposits	2209617000	USD
CY2017Q4	wtfc	Wealth Management Deposits WealthManagementDeposits	2323699000	USD
CY2016Q4	wtfc	Wealth Management Deposits Percentage WealthManagementDepositsPercentage	0.10
CY2017Q4	wtfc	Wealth Management Deposits Percentage WealthManagementDepositsPercentage	0.10
CY2015	wtfc	Weighted Average Stated Interest Rate Basis Points WeightedAverageStatedInterestRateBasisPoints	0.0358
CY2016	wtfc	Weighted Average Stated Interest Rate Basis Points WeightedAverageStatedInterestRateBasisPoints	0.0034
CY2017	wtfc	Weighted Average Stated Interest Rate Basis Points WeightedAverageStatedInterestRateBasisPoints	0.0485

Files In Submission

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$WTFC
WINTRUST FINANCIAL CORP Stock $wtfc

2016 Q4 Form 10-K Financial Statement

#000101532818000080 Filed on February 28, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WTFC WINTRUST FINANCIAL CORP Stock $wtfc

2016 Q4 Form 10-K Financial Statement

#000101532818000080 Filed on February 28, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WTFC
WINTRUST FINANCIAL CORP Stock $wtfc