$MBWM
Mercantile Bank Corp Stock $mbwm

$mbwm Overview Financials Valuation SEC Filings Company Website

2017 Q3 Form 10-K Financial Statement

#000143774918003838 Filed on March 05, 2018

Income Statement

Concept	2017 Q3	2017 Q1	2016 Q4
Revenue	$33.03M	$28.70M	$29.72M
YoY Change	11.2%	-0.64%	-99.9%
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	$800.0K	$700.0K	$2.850M
YoY Change	14.29%	0.0%	-6.56%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$4.390M	$3.195M
YoY Change	34.83%	6.25%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$12.04M	$10.98M	$12.05M
YoY Change	4.95%	-12.13%	32.27%
Income Tax	$3.702M	$3.369M	$3.960M
% Of Pretax Income	30.75%	30.67%	32.86%
Net Earnings	$8.337M	$7.615M	$8.085M
YoY Change	6.27%	-10.93%	24.77%
Net Earnings / Revenue	25.24%	26.53%	27.21%
Basic Earnings Per Share	$0.51	$0.46	$0.49
Diluted Earnings Per Share	$0.51	$0.46	$0.49
COMMON SHARES
Basic Shares Outstanding	16.48M	16.43M
Diluted Shares Outstanding	16.49M	16.45M

Balance Sheet

Concept	2017 Q3	2017 Q1	2016 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents
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	$45.61M	$45.85M	$45.46M
YoY Change	0.87%	-0.33%	-3.0%
Goodwill	$49.47M	$49.47M	$49.47M
YoY Change	0.0%		0.0%
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	$3.255B	$3.019B	$3.083B
YoY Change	6.22%	3.17%	6.17%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$15.40M	$16.20M	$15.20M
YoY Change	-0.65%	-8.47%	-7.32%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$122.3M	$126.7M	$131.7M
YoY Change	-16.69%	-21.93%	-14.92%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$15.40M	$16.20M	$15.20M
YoY Change	-0.65%	-8.47%	-7.32%
LONG-TERM LIABILITIES
Long-Term Debt	$45.30M	$45.00M	$44.80M
YoY Change	1.34%	1.58%	-18.84%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$45.30M	$45.00M	$44.80M
YoY Change	1.34%	1.58%	-18.84%
TOTAL LIABILITIES
Total Short-Term Liabilities	$15.40M	$16.20M	$15.20M
Total Long-Term Liabilities	$45.30M	$45.00M	$44.80M
Total Liabilities	$2.892B	$2.671B	$2.742B
YoY Change	6.54%	3.22%	6.69%
SHAREHOLDERS EQUITY
Retained Earnings	$55.26M	$45.60M	$40.90M
YoY Change	26.58%		47.55%
Common Stock	$309.0M	$307.4M	$305.5M
YoY Change	1.65%		0.22%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$362.5M	$348.1M	$340.8M
YoY Change
Total Liabilities & Shareholders Equity	$3.255B	$3.019B	$3.083B
YoY Change	6.22%	3.17%	6.17%

Cashflow Statement

Concept	2017 Q3	2017 Q1	2016 Q4
OPERATING ACTIVITIES
Net Income	$8.337M	$7.615M	$8.085M
YoY Change	6.27%	-10.93%	24.77%
Depreciation, Depletion And Amortization	$800.0K	$700.0K	$2.850M
YoY Change	14.29%	0.0%	-6.56%
Cash From Operating Activities	$9.060M	$7.971M	$12.44M
YoY Change	42.68%	-20.84%	19.27%
INVESTING ACTIVITIES
Capital Expenditures	-$2.030M	-$1.140M	-$980.0K
YoY Change	174.32%		553.33%
Acquisitions
YoY Change
Other Investing Activities	-$33.37M	-$63.94M	$12.91M
YoY Change	17.54%	404.66%	-132.3%
Cash From Investing Activities	-$35.41M	-$65.07M	$11.94M
YoY Change	21.52%	413.6%	-129.76%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$0.00
YoY Change		-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	101.8M	-73.52M	17.48M
YoY Change	76.93%	-629.29%	11.2%
NET CHANGE
Cash From Operating Activities	9.060M	7.971M	12.44M
Cash From Investing Activities	-35.41M	-65.07M	11.94M
Cash From Financing Activities	101.8M	-73.52M	17.48M
Net Change In Cash	75.44M	-130.6M	41.86M
YoY Change	117.16%	-1256.95%	-399.64%
FREE CASH FLOW
Cash From Operating Activities	$9.060M	$7.971M	$12.44M
Capital Expenditures	-$2.030M	-$1.140M	-$980.0K
Free Cash Flow	$11.09M	$9.111M	$13.42M
YoY Change	56.42%		26.84%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2017	dei	Entity Registrant Name EntityRegistrantName	MERCANTILE BANK CORPORATION
CY2017	dei	Trading Symbol TradingSymbol	mbwm
CY2017Q4	mbwm	Aggregate Local Deposit Liabilities AggregateLocalDepositLiabilities	2419707000
CY2016Q4	mbwm	Aggregate Local Deposit Liabilities AggregateLocalDepositLiabilities	2298795000
CY2017Q4	mbwm	Aggregate Out Of Area Time Deposits AggregateOutOfAreaTimeDeposits	102658000
CY2016Q4	mbwm	Aggregate Out Of Area Time Deposits AggregateOutOfAreaTimeDeposits	76190000
CY2017	mbwm	Aggregate Percentage Increase Decrease In Local Deposits AggregatePercentageIncreaseDecreaseInLocalDeposits	0.053
CY2017	mbwm	Aggregate Increase Decrease In Percentage Of Deposits AggregateIncreaseDecreaseInPercentageOfDeposits	0.062
CY2017	mbwm	Aggregate Percentage Increase Decrease In Out Of Area Deposits AggregatePercentageIncreaseDecreaseInOutOfAreaDeposits	0.347
CY2017Q4	mbwm	Aggregate Percentage Of Deposits AggregatePercentageOfDeposits	1
CY2016Q4	mbwm	Aggregate Percentage Of Deposits AggregatePercentageOfDeposits	1
CY2017Q4	mbwm	Aggregate Percentage Of Local Deposits AggregatePercentageOfLocalDeposits	0.959
CY2016Q4	mbwm	Aggregate Percentage Of Local Deposits AggregatePercentageOfLocalDeposits	0.968
CY2017Q4	mbwm	Aggregate Percentage Of Out Of Area Deposits AggregatePercentageOfOutOfAreaDeposits	0.041
CY2016Q4	mbwm	Aggregate Percentage Of Out Of Area Deposits AggregatePercentageOfOutOfAreaDeposits	0.032
CY2017Q4	mbwm	Allowance To Adjust To Lower Of Cost Or Market AllowanceToAdjustToLowerOfCostOrMarket	0
CY2016Q4	mbwm	Allowance To Adjust To Lower Of Cost Or Market AllowanceToAdjustToLowerOfCostOrMarket	0
CY2014Q2	mbwm	Amortization Of Fair Value Discount Related To Subordinated Debentures Of Assumed Business Trusts AmortizationOfFairValueDiscountRelatedToSubordinatedDebenturesOfAssumedBusinessTrusts	700000
CY2014Q2	mbwm	Amortization Period Of Fair Value Discount Related To Subordinated Debentures Of Assumed Business Trusts AmortizationPeriodOfFairValueDiscountRelatedToSubordinatedDebenturesOfAssumedBusinessTrusts	P21Y182D
CY2017Q4	mbwm	Amount Of Federal Reserve Required AmountOfFederalReserveRequired	9600000
CY2017	dei	Amendment Flag AmendmentFlag	false
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
CY2017Q2	dei	Entity Public Float EntityPublicFloat	506000000
CY2017	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0001042729
CY2018Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	16594812
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2016Q4	mbwm	Amount Of Federal Reserve Required AmountOfFederalReserveRequired	9200000
CY2017Q4	mbwm	Business Combination Debt Assumed Number Of Trusts BusinessCombinationDebtAssumedNumberOfTrusts	4
CY2017Q4	mbwm	Capital Conservation Buffer CapitalConservationBuffer	0.025
CY2017Q4	mbwm	Continuing Involvement With Transferred Financial Assets Custodial Escrow Balance ContinuingInvolvementWithTransferredFinancialAssetsCustodialEscrowBalance	4700000
CY2016Q4	mbwm	Continuing Involvement With Transferred Financial Assets Custodial Escrow Balance ContinuingInvolvementWithTransferredFinancialAssetsCustodialEscrowBalance	4600000
CY2017Q4	mbwm	Deferred Tax Assets Fair Value Write Downs On Foreclosed Properties DeferredTaxAssetsFairValueWriteDownsOnForeclosedProperties	23000
CY2016Q4	mbwm	Deferred Tax Assets Fair Value Write Downs On Foreclosed Properties DeferredTaxAssetsFairValueWriteDownsOnForeclosedProperties	24000
CY2017Q4	mbwm	Deferred Tax Assets Non Accrual Loan Interest Income DeferredTaxAssetsNonAccrualLoanInterestIncome	425000
CY2016Q4	mbwm	Deferred Tax Assets Non Accrual Loan Interest Income DeferredTaxAssetsNonAccrualLoanInterestIncome	623000
CY2017Q4	mbwm	Deferred Tax Liabilities Business Combination Adjustments DeferredTaxLiabilitiesBusinessCombinationAdjustments	1784000
CY2016Q4	mbwm	Deferred Tax Liabilities Business Combination Adjustments DeferredTaxLiabilitiesBusinessCombinationAdjustments	2183000
CY2017	mbwm	Discount Accretion On Acquired Loans DiscountAccretionOnAcquiredLoans	2338000
CY2016	mbwm	Discount Accretion On Acquired Loans DiscountAccretionOnAcquiredLoans	4925000
CY2015	mbwm	Discount Accretion On Acquired Loans DiscountAccretionOnAcquiredLoans	5338000
CY2017	mbwm	Effective Income Tax Reconciliation Bank Owned Life Insurance EffectiveIncomeTaxReconciliationBankOwnedLifeInsurance	948000
CY2017Q4	mbwm	Mortgage Servicing Rights Amortization Expense Year Three MortgageServicingRightsAmortizationExpenseYearThree	867000
CY2017Q4	mbwm	Mortgage Servicing Rights Amortization Expense Year Two MortgageServicingRightsAmortizationExpenseYearTwo	1036000
CY2016	mbwm	Effective Income Tax Reconciliation Bank Owned Life Insurance EffectiveIncomeTaxReconciliationBankOwnedLifeInsurance	440000
CY2015	mbwm	Effective Income Tax Reconciliation Bank Owned Life Insurance EffectiveIncomeTaxReconciliationBankOwnedLifeInsurance	384000
CY2017	mbwm	Efficiency Program Related Costs EfficiencyProgramRelatedCosts	0
CY2016	mbwm	Efficiency Program Related Costs EfficiencyProgramRelatedCosts	172000
CY2015	mbwm	Efficiency Program Related Costs EfficiencyProgramRelatedCosts	765000
CY2014Q2	mbwm	Fair Value Discount Of Subordinated Debentures Related To Assumed Business Trusts At Time Af Merger FairValueDiscountOfSubordinatedDebenturesRelatedToAssumedBusinessTrustsAtTimeAfMerger	15000000
CY2017Q4	mbwm	Fair Value Of Interest Rate Swap Agreement Liability FairValueOfInterestRateSwapAgreementLiability	100000
CY2016Q4	mbwm	Fair Value Of Interest Rate Swap Agreement Liability FairValueOfInterestRateSwapAgreementLiability	100000
CY2017	mbwm	Fees And Commissions Letter Of Credit FeesAndCommissionsLetterOfCredit	348000
CY2016	mbwm	Fees And Commissions Letter Of Credit FeesAndCommissionsLetterOfCredit	493000
CY2015	mbwm	Fees And Commissions Letter Of Credit FeesAndCommissionsLetterOfCredit	457000
CY2017	mbwm	Fees And Commissions Payroll Processing FeesAndCommissionsPayrollProcessing	1305000
CY2016	mbwm	Fees And Commissions Payroll Processing FeesAndCommissionsPayrollProcessing	1016000
CY2015	mbwm	Fees And Commissions Payroll Processing FeesAndCommissionsPayrollProcessing	969000
CY2017	mbwm	Gain Loss On Repurchase Of Trust Preferred Securities GainLossOnRepurchaseOfTrustPreferredSecurities	0
CY2016	mbwm	Gain Loss On Repurchase Of Trust Preferred Securities GainLossOnRepurchaseOfTrustPreferredSecurities	2970000
CY2015	mbwm	Gain Loss On Repurchase Of Trust Preferred Securities GainLossOnRepurchaseOfTrustPreferredSecurities	0
CY2017	mbwm	Interest Income On Commercial And Mortgage Loans Discontinued Period InterestIncomeOnCommercialAndMortgageLoansDiscontinuedPeriod	P90D
CY2017Q4	mbwm	Loan Portfolio Classes And Segments As Percentage Of Aggregate Loan LoanPortfolioClassesAndSegmentsAsPercentageOfAggregateLoan	1
CY2016Q4	mbwm	Loan Portfolio Classes And Segments As Percentage Of Aggregate Loan LoanPortfolioClassesAndSegmentsAsPercentageOfAggregateLoan	1
CY2017	mbwm	Loans And Leases Receivable Net Of Deferred Income Increase Decrease Percentage LoansAndLeasesReceivableNetOfDeferredIncomeIncreaseDecreasePercentage	0.076
CY2017Q4	mbwm	Loans Receivable Held For Sale Amount Not Part Of Disposal Group Mortgage LoansReceivableHeldForSaleAmountNotPartOfDisposalGroupMortgage	2553000
CY2016Q4	mbwm	Loans Receivable Held For Sale Amount Not Part Of Disposal Group Mortgage LoansReceivableHeldForSaleAmountNotPartOfDisposalGroupMortgage	1035000
CY2017	mbwm	Maximum Delinquency Period For Consumer And Credit Card Loans To Be Charged Off MaximumDelinquencyPeriodForConsumerAndCreditCardLoansToBeChargedOff	P120D
CY2009Q4	mbwm	Maximum Level Of Consolidated Aggregate Assets Allowing For Inclusion Of Trust Preferred Securities In Tier One Capital MaximumLevelOfConsolidatedAggregateAssetsAllowingForInclusionOfTrustPreferredSecuritiesInTierOneCapital	15000000000
CY2017	mbwm	Maximum Restricted Core Element Allowed In Tier One Capital Percent MaximumRestrictedCoreElementAllowedInTierOneCapitalPercent	0.25
CY2017	mbwm	Minimum Number Of Days Past Due At Period End For Loans Modified As Troubled Debt Restructurings MinimumNumberOfDaysPastDueAtPeriodEndForLoansModifiedAsTroubledDebtRestructurings	P30D
CY2017Q4	mbwm	Mortgage Servicing Rights Amortization Expense After Year Five MortgageServicingRightsAmortizationExpenseAfterYearFive	725000
CY2017Q4	mbwm	Mortgage Servicing Rights Amortization Expense Next Twelve Months MortgageServicingRightsAmortizationExpenseNextTwelveMonths	1213000
CY2017Q4	mbwm	Mortgage Servicing Rights Amortization Expense Year Five MortgageServicingRightsAmortizationExpenseYearFive	557000
CY2017Q4	mbwm	Mortgage Servicing Rights Amortization Expense Year Four MortgageServicingRightsAmortizationExpenseYearFour	708000
CY2017	mbwm	Net Gain Loss From Sale And Valuation Write Down Of Foreclosed Assets NetGainLossFromSaleAndValuationWriteDownOfForeclosedAssets	319000
CY2016	mbwm	Net Gain Loss From Sale And Valuation Write Down Of Foreclosed Assets NetGainLossFromSaleAndValuationWriteDownOfForeclosedAssets	520000
CY2015	mbwm	Net Gain Loss From Sale And Valuation Write Down Of Foreclosed Assets NetGainLossFromSaleAndValuationWriteDownOfForeclosedAssets	62000
CY2017	mbwm	Net Gain Loss From Sale And Valuation Write Down Of Former Bank Premises NetGainLossFromSaleAndValuationWriteDownOfFormerBankPremises	-133000
CY2016	mbwm	Net Gain Loss From Sale And Valuation Write Down Of Former Bank Premises NetGainLossFromSaleAndValuationWriteDownOfFormerBankPremises	-35000
CY2015	mbwm	Net Gain Loss From Sale And Valuation Write Down Of Former Bank Premises NetGainLossFromSaleAndValuationWriteDownOfFormerBankPremises	0
CY2017Q4	mbwm	Number Of Business Trusts NumberOfBusinessTrusts	5
CY2017Q4	mbwm	Number Of Unconsolidated Business Trusts Formed To Issue Trust Preferred Securities NumberOfUnconsolidatedBusinessTrustsFormedToIssueTrustPreferredSecurities	5
CY2017Q4	mbwm	Out Of Area Time Deposits100000 And Over OutOfAreaTimeDeposits100000AndOver	102658000
CY2016Q4	mbwm	Out Of Area Time Deposits100000 And Over OutOfAreaTimeDeposits100000AndOver	76190000
CY2017Q4	mbwm	Out Of Area Time Deposits Under100000 OutOfAreaTimeDepositsUnder100000	0
CY2016Q4	mbwm	Out Of Area Time Deposits Under100000 OutOfAreaTimeDepositsUnder100000	0
CY2017Q4	mbwm	Percentage Of Domestic Time Deposits Under100000 PercentageOfDomesticTimeDepositsUnder100000	0.06
CY2016Q4	mbwm	Percentage Of Domestic Time Deposits Under100000 PercentageOfDomesticTimeDepositsUnder100000	0.062
CY2017	mbwm	Percentage Of Increase Decrease In Domestic Time Deposits Under100000 PercentageOfIncreaseDecreaseInDomesticTimeDepositsUnder100000	0.042
CY2017	mbwm	Percentage Of Increase Decrease In Money Market Deposits PercentageOfIncreaseDecreaseInMoneyMarketDeposits	0.57
CY2017	mbwm	Percentage Of Increase Decrease In Non Interest Bearing Demand Deposits PercentageOfIncreaseDecreaseInNonInterestBearingDemandDeposits	0.069
CY2017	mbwm	Percentage Of Increase Decrease In Out Of Area Time100000 And Over PercentageOfIncreaseDecreaseInOutOfAreaTime100000AndOver	0.347
CY2017	mbwm	Percentage Of Increase Decrease In Out Of Area Time Under100000 PercentageOfIncreaseDecreaseInOutOfAreaTimeUnder100000	0
CY2017	mbwm	Percentage Of Increase Decrease Of Interest Bearing Checking Deposits PercentageOfIncreaseDecreaseOfInterestBearingCheckingDeposits	0.026
CY2017	mbwm	Percentage Of Increase Or Decrease Of Savings Deposits PercentageOfIncreaseOrDecreaseOfSavingsDeposits	-0.051
CY2017Q4	mbwm	Percentage Of Non Interest Bearing Domestic Deposits To Deposits Demand PercentageOfNonInterestBearingDomesticDepositsToDepositsDemand	0.343
CY2016Q4	mbwm	Percentage Of Non Interest Bearing Domestic Deposits To Deposits Demand PercentageOfNonInterestBearingDomesticDepositsToDepositsDemand	0.341
CY2017Q4	mbwm	Percentage Of Out Of Area Time Deposit Under100000 PercentageOfOutOfAreaTimeDepositUnder100000	0
CY2016Q4	mbwm	Percentage Of Out Of Area Time Deposit Under100000 PercentageOfOutOfAreaTimeDepositUnder100000	0
CY2017Q4	mbwm	Percentage Of Out Of Area Time Deposits100000 And Over PercentageOfOutOfAreaTimeDeposits100000AndOver	0.041
CY2016Q4	mbwm	Percentage Of Out Of Area Time Deposits100000 And Over PercentageOfOutOfAreaTimeDeposits100000AndOver	0.032
CY2017Q4	mbwm	Preferred Securities Of Subsidiary Trust PreferredSecuritiesOfSubsidiaryTrust	43400000
CY2016Q4	mbwm	Preferred Securities Of Subsidiary Trust PreferredSecuritiesOfSubsidiaryTrust	42800000
CY2017	mbwm	Problem Asset Costs ProblemAssetCosts	355000
CY2016	mbwm	Problem Asset Costs ProblemAssetCosts	338000
CY2015	mbwm	Problem Asset Costs ProblemAssetCosts	1212000
CY2017	mbwm	Proceeds From Sale Of Former Bank Premises ProceedsFromSaleOfFormerBankPremises	25000
CY2016	mbwm	Proceeds From Sale Of Former Bank Premises ProceedsFromSaleOfFormerBankPremises	45000
CY2015	mbwm	Proceeds From Sale Of Former Bank Premises ProceedsFromSaleOfFormerBankPremises	0
CY2017	mbwm	Reclassification From Aoci To Retained Earnings Current Period ReclassificationFromAOCIToRetainedEarningsCurrentPeriod	0
CY2017Q4	mbwm	Related Party Deposits And Repurchase Agreements RelatedPartyDepositsAndRepurchaseAgreements	15400000
CY2016Q4	mbwm	Related Party Deposits And Repurchase Agreements RelatedPartyDepositsAndRepurchaseAgreements	19800000
CY2017Q4	mbwm	Reserve Or Liability Balance For Financial Instruments With Off Balance Sheet Risk ReserveOrLiabilityBalanceForFinancialInstrumentsWithOffBalanceSheetRisk	0
CY2016Q4	mbwm	Reserve Or Liability Balance For Financial Instruments With Off Balance Sheet Risk ReserveOrLiabilityBalanceForFinancialInstrumentsWithOffBalanceSheetRisk	0
CY2016Q2	mbwm	Stock Repurchase Program Additional Authorized Amount StockRepurchaseProgramAdditionalAuthorizedAmount	15000000
CY2017	mbwm	Term Debt Secured By Real Estate Balloon Payment Period TermDebtSecuredByRealEstateBalloonPaymentPeriod	P5Y
CY2017	mbwm	Transfer Of Bank Premises To Other Real Estate Owned TransferOfBankPremisesToOtherRealEstateOwned	1736000
CY2016	mbwm	Transfer Of Bank Premises To Other Real Estate Owned TransferOfBankPremisesToOtherRealEstateOwned	381000
CY2015	mbwm	Transfer Of Bank Premises To Other Real Estate Owned TransferOfBankPremisesToOtherRealEstateOwned	0
CY2017Q4	mbwm	Trust Preferred Securities Included In Tier One Capital TrustPreferredSecuritiesIncludedInTierOneCapital	43400000
CY2016Q4	mbwm	Trust Preferred Securities Included In Tier One Capital TrustPreferredSecuritiesIncludedInTierOneCapital	42800000
CY2017Q4	mbwm	Weighted Average Yield Of Securities Portfolio WeightedAverageYieldOfSecuritiesPortfolio	0.0246
CY2017Q4	mbwm	Weighted Average Yield Of Securities Portfolio Due Afterten Years WeightedAverageYieldOfSecuritiesPortfolioDueAftertenYears	0.029
CY2017Q4	mbwm	Weighted Average Yield Of Securities Portfolio Due From Five To Ten Years WeightedAverageYieldOfSecuritiesPortfolioDueFromFiveToTenYears	0.0252
CY2017Q4	mbwm	Weighted Average Yield Of Securities Portfolio Due From One To Five Years WeightedAverageYieldOfSecuritiesPortfolioDueFromOneToFiveYears	0.0212
CY2017Q4	mbwm	Weighted Average Yield Of Securities Portfolio Due In One Year Or Less WeightedAverageYieldOfSecuritiesPortfolioDueInOneYearOrLess	0.0174
CY2017Q4	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	14204000
CY2016Q4	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	15230000
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	30589000
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	28715000
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-4900000
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-5500000
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1400000
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-4903000
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5581000
CY2015	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	684000
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1459000
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1981000
CY2017	us-gaap	Advertising Cost Policy Expensed Advertising Cost AdvertisingCostPolicyExpensedAdvertisingCost	<div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><div style="display: inline; text-decoration: underline;">Advertising Costs</div><div style="display: inline; font-family:'Times New Roman', Times, serif;font-size:10pt;">: Advertising costs are expensed as incurred.</div></div></div></div></div></div>
CY2017	us-gaap	Advertising Expense AdvertisingExpense	1608000
CY2016	us-gaap	Advertising Expense AdvertisingExpense	1586000
CY2015	us-gaap	Advertising Expense AdvertisingExpense	1363000
CY2017Q4	us-gaap	Allowance For Credit Losses Change In Method Of Calculating Impairment AllowanceForCreditLossesChangeInMethodOfCalculatingImpairment	444000
CY2016Q4	us-gaap	Allowance For Credit Losses Change In Method Of Calculating Impairment AllowanceForCreditLossesChangeInMethodOfCalculatingImpairment	694000
CY2017Q4	us-gaap	Assets Assets	3286704000
CY2016Q4	us-gaap	Assets Assets	3082571000
CY2017Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	341948000
CY2017Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	335744000
CY2016Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	328060000
CY2017Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1355000
CY2016Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	927000
CY2017Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	7559000
CY2016Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	9429000
CY2017Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	341948000
CY2016Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	336562000
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	6826000
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	774000
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	7559000
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	9429000
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	252521000
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	253210000
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	733000
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	8655000
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	60173000
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	183125000
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	192348000
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	70085000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	100128000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	97943000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	65093000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	64938000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	106083000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	102415000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	29667000
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	29675000
CY2017Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	335744000
CY2017Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	68689000
CY2016Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	67198000
CY2017	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2731000
CY2016	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1264000
CY2015	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1113000
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	16505000
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	93705000
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-82847000
CY2017Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	55127000
CY2016Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	50200000
CY2017Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	200101000
CY2016Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	183596000
CY2015Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	89891000
CY2014Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	172738000
CY2016Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1726000
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1404000
CY2015Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	5193000
CY2017	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	562000
CY2016	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	2388000
CY2017	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions	223000
CY2016	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions	245000
CY2017	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Disposals Of Loans CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans	350000
CY2016	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Disposals Of Loans CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans	1761000
CY2017	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	367000
CY2016	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	4635000
CY2016	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToNonaccretableDifference	4198000
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount Net CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	5200000
CY2016Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount Net CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	6200000
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Outstanding Balance CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance	11900000
CY2016Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Outstanding Balance CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance	15500000
CY2017Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.18
CY2017Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.19
CY2017Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.18
CY2017Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.19
CY2017Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.18
CY2017Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.19
CY2017Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2016Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	40000000
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	40000000
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	16592125
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	16416695
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	309772000
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	305488000
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	32821000
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	25069000
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	28267000
CY2017Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	613631000
CY2016Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	607890000
CY2017Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More After12 Months ContractualMaturitiesTimeDeposits100000OrMoreAfter12Months	146064000
CY2016Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More After12 Months ContractualMaturitiesTimeDeposits100000OrMoreAfter12Months	154871000
CY2017Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Six Months Through12 Months ContractualMaturitiesTimeDeposits100000OrMoreSixMonthsThrough12Months	96951000
CY2016Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Six Months Through12 Months ContractualMaturitiesTimeDeposits100000OrMoreSixMonthsThrough12Months	79656000
CY2017Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Three Months Or Less ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsOrLess	50258000
CY2016Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Three Months Or Less ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsOrLess	101444000
CY2017Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Three Months Through Six Months ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsThroughSixMonths	68011000
CY2016Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Three Months Through Six Months ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsThroughSixMonths	87277000
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	13978000
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	15786000
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7399000
CY2017	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0016
CY2016	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0014
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	831000
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-812000
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4412000
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-505000
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-699000
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4592000
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	5538000
CY2016Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	9136000
CY2017Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	94000
CY2016Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	157000
CY2017Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	211000
CY2016Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	496000
CY2017Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	0
CY2016Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	30000
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	7636000
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	12961000
CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	2004000
CY2016Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	3668000
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	7542000
CY2016Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	12804000
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	311000
CY2016Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	408000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	673000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	1175000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	501000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	786000
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	4095000
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	6286000
CY2017Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	1303000
CY2016Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	2976000
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	94000
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	157000
CY2017Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1565000
CY2016Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	3423000
CY2017Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	1072000
CY2016Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	1940000
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	146000
CY2016Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	199000
CY2017Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	244000
CY2016Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	463000
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	727000
CY2016Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	928000
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1300000
CY2016	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1200000
CY2015	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1200000
CY2017	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.0425
CY2017Q4	us-gaap	Deposits Deposits	2522365000
CY2016Q4	us-gaap	Deposits Deposits	2374985000
CY2017	us-gaap	Depreciation Depreciation	3000000
CY2016	us-gaap	Depreciation Depreciation	2900000
CY2015	us-gaap	Depreciation Depreciation	3000000
CY2017	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	10358000
CY2016	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	9576000
CY2015	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	11654000
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	9516000
CY2016	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	18731000
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	12046000
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.90
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.96
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.63
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.46
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.45
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.46
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.90
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.96
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.62
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.46
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.45
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2016Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.46
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2017Q4	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Amount Liability FairValueDisclosureOffbalanceSheetRisksAmountLiability	1012197000
CY2016Q4	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Amount Liability FairValueDisclosureOffbalanceSheetRisksAmountLiability	821338000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Equipment Expense EquipmentExpense	2168000
CY2016	us-gaap	Equipment Expense EquipmentExpense	2119000
CY2015	us-gaap	Equipment Expense EquipmentExpense	2332000
CY2017	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	960000
CY2016	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1236000
CY2015	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1717000
CY2017Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	220000000
CY2016Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	175000000
CY2017Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due After Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterFiveYearsOfBalanceSheetDate	50000000
CY2017Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Next Rolling Twelve Months FederalHomeLoanBankAdvancesMaturitiesSummaryDueInNextRollingTwelveMonths	20000000
CY2017Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Rolling Year Five FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRollingYearFive	40000000
CY2017Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Rolling Year Four FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRollingYearFour	40000000
CY2017Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Rolling Year Three FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRollingYearThree	30000000
CY2017Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Rolling Year Two FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRollingYearTwo	40000000
CY2015	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	3308000
CY2017	us-gaap	Fees And Commissions Mortgage Banking FeesAndCommissionsMortgageBanking	4421000
CY2016	us-gaap	Fees And Commissions Mortgage Banking FeesAndCommissionsMortgageBanking	3866000
CY2015	us-gaap	Fees And Commissions Mortgage Banking FeesAndCommissionsMortgageBanking	3619000
CY2017Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	11036000
CY2016Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	8026000
CY2017	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	4760000
CY2016	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	4278000
CY2015	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	4329000
CY2017	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	4233000
CY2016	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	4253000
CY2017Q4	us-gaap	Finite Lived Core Deposits Gross FiniteLivedCoreDepositsGross	17500000
CY2016Q4	us-gaap	Finite Lived Core Deposits Gross FiniteLivedCoreDepositsGross	17500000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	9900000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	7500000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	7600000
CY2016Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	9957000
CY2017Q4	us-gaap	Foreclosed Assets ForeclosedAssets	2300000
CY2016Q4	us-gaap	Foreclosed Assets ForeclosedAssets	500000
CY2017	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	3972000
CY2016	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	3699000
CY2015	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	3626000
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-71000
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-174000
CY2015	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-55000
CY2017	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	37000
CY2016	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	-1000
CY2015	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	17000
CY2017Q4	us-gaap	Goodwill Goodwill	49473000
CY2016Q4	us-gaap	Goodwill Goodwill	49473000
CY2017	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	400000
CY2016	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1200000
CY2015	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	2400000
CY2017	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	500000
CY2016	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	100000
CY2015	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	1700000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	46083000
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	46887000
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	38831000
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14809000
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14974000
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11811000
CY2017	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	1336000
CY2017Q4	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	1300000
CY2016	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	0
CY2015	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	0
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-113000
CY2015	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-180000
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	32877
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	1336000
CY2016	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0
CY2015	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	16129000
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	16410000
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	13591000
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-678000
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-7000
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-435000
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1030000
CY2016	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	876000
CY2015	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	781000
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	14225000
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	15125000
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	8000000
CY2017	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1056000
CY2016	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-122000
CY2015	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	321000
CY2017	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-943000
CY2016	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-1046000
CY2015	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	4185000
CY2017	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	203219000
CY2016	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	120457000
CY2015	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	146944000
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	354000
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	648000
CY2015	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	4815000
CY2017	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-55839000
CY2016	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-20854000
CY2015	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-147106000
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	10102
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	18644
CY2017	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	8222000
CY2016	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	7939000
CY2015	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	7696000
CY2017	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	125543000
CY2016	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	118457000
CY2015	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	112328000
CY2017Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	28704000
CY2017Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	30903000
CY2017Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	33034000
CY2017Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	32902000
CY2016Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	28889000
CY2016Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	30147000
CY2016Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	29706000
CY2016Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	29715000
CY2017	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	116816000
CY2016	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	109049000
CY2015	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	104106000
CY2017Q4	us-gaap	Interest Bearing Deposit Liabilities Domestic InterestBearingDepositLiabilitiesDomestic	1655985000
CY2016Q4	us-gaap	Interest Bearing Deposit Liabilities Domestic InterestBearingDepositLiabilitiesDomestic	1564385000
CY2017Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	144974000
CY2016Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	133396000
CY2017Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	387758000
CY2016Q4	us-gaap	Interest Bearing Domestic Deposit Checking InterestBearingDomesticDepositChecking	377929000
CY2017Q4	us-gaap	Interest Bearing Domestic Deposit Money Market InterestBearingDomesticDepositMoneyMarket	427119000
CY2016Q4	us-gaap	Interest Bearing Domestic Deposit Money Market InterestBearingDomesticDepositMoneyMarket	272051000
CY2017Q4	us-gaap	Interest Bearing Domestic Deposit Savings InterestBearingDomesticDepositSavings	327530000
CY2016Q4	us-gaap	Interest Bearing Domestic Deposit Savings InterestBearingDomesticDepositSavings	344988000
CY2017	us-gaap	Interest Expense InterestExpense	15795000
CY2016	us-gaap	Interest Expense InterestExpense	12590000
CY2015	us-gaap	Interest Expense InterestExpense	11154000
CY2016Q1	us-gaap	Interest Expense Debt InterestExpenseDebt	154000
CY2017	us-gaap	Interest Expense Deposits InterestExpenseDeposits	9362000
CY2016	us-gaap	Interest Expense Deposits InterestExpenseDeposits	7549000
CY2015	us-gaap	Interest Expense Deposits InterestExpenseDeposits	7590000
CY2017	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	3657000
CY2016	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	2263000
CY2015	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	765000
CY2017	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	190000
CY2016	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	211000
CY2015	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	157000
CY2017	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	2586000
CY2016	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	2567000
CY2015	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	2642000
CY2017	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1096000
CY2016	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	401000
CY2015	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	215000
CY2017	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	106798000
CY2016	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	102967000
CY2015	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	102174000
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	109748000
CY2016	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	105867000
CY2015	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	101174000
CY2017Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	25509000
CY2017Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	27193000
CY2017Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	28644000
CY2017Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	28402000
CY2016Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	25882000
CY2016Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	27100000
CY2016Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	26450000
CY2016Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	26435000
CY2017	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2305000
CY2016	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2165000
CY2015	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2089000
CY2017	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	5326000
CY2016	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	6842000
CY2015	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	5918000
CY2017	us-gaap	Interest Paid Net InterestPaidNet	15468000
CY2016	us-gaap	Interest Paid Net InterestPaidNet	12477000
CY2015	us-gaap	Interest Paid Net InterestPaidNet	11618000
CY2017	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	363000
CY2016	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	327000
CY2015	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	403000
CY2012Q1	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	32000000
CY2017Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	45517000
CY2016Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	44835000
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	45397000
CY2016	us-gaap	Labor And Related Expense LaborAndRelatedExpense	43524000
CY2015	us-gaap	Labor And Related Expense LaborAndRelatedExpense	42594000
CY2017Q4	us-gaap	Liabilities Liabilities	2920834000
CY2016Q4	us-gaap	Liabilities Liabilities	2741760000
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3286704000
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3082571000
CY2017Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	731000000
CY2017Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	511000000
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	19501000
CY2016Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	17961000
CY2017Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	1000000
CY2016Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	1400000
CY2017	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	300000
CY2016	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	100000
CY2015	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	300000
CY2016	us-gaap	Net Income Loss NetIncomeLoss	31913000
CY2016Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	2378620000
CY2017Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	2539051000
CY2016Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	2360659000
CY2017Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	2558552000
CY2017Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group Mortgage LoansReceivableHeldForSaleNetNotPartOfDisposalGroupMortgage	2553000
CY2016Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group Mortgage LoansReceivableHeldForSaleNetNotPartOfDisposalGroupMortgage	1035000
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	169312000
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	155664000
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-22648000
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-191472000
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-96561000
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-96203000
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	38665000
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	34602000
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	36004000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	31274000
CY2015	us-gaap	Net Income Loss NetIncomeLoss	27020000
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	7615000
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	7343000
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	8337000
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	7979000
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	8549000
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	7434000
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	7845000
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	8085000
CY2017Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	866380000
CY2016Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	810600000
CY2017	us-gaap	Noninterest Expense NoninterestExpense	79716000
CY2016	us-gaap	Noninterest Expense NoninterestExpense	77118000
CY2015	us-gaap	Noninterest Expense NoninterestExpense	79381000
CY2017	us-gaap	Noninterest Income NoninterestIncome	19001000
CY2016	us-gaap	Noninterest Income NoninterestIncome	21038000
CY2015	us-gaap	Noninterest Income NoninterestIncome	16038000
CY2017	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1203000
CY2016	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2898000
CY2015	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2243000
CY2017	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2017	us-gaap	Occupancy Net OccupancyNet	6186000
CY2016	us-gaap	Occupancy Net OccupancyNet	6063000
CY2015	us-gaap	Occupancy Net OccupancyNet	5976000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	1400000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	400000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four And Five Years OperatingLeasesFutureMinimumPaymentsDueInFourAndFiveYears	300000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two And Three Years OperatingLeasesFutureMinimumPaymentsDueInTwoAndThreeYears	500000
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	200000
CY2017Q4	us-gaap	Other Assets OtherAssets	28976000
CY2016Q4	us-gaap	Other Assets OtherAssets	30146000
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	2379000
CY2016	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-10528000
CY2015	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	1874000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1547000
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6844000
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1247000
CY2017	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	832000
CY2016	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-3684000
CY2015	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	627000
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	82000
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	169000
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	0
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	110000
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	54000
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	28000
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	59000
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	2297000
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-10697000
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	1874000
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1247000
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-6954000
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1493000
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	804000
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-3743000
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	627000
CY2017	us-gaap	Other Noninterest Expense OtherNoninterestExpense	14820000
CY2016	us-gaap	Other Noninterest Expense OtherNoninterestExpense	14141000
CY2015	us-gaap	Other Noninterest Expense OtherNoninterestExpense	15726000
CY2017Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	0
CY2017	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	108857000
CY2016	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	110778000
CY2015	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	116997000
CY2017	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	0
CY2016	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	0
CY2015	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-6132000
CY2017	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	178373000
CY2016	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	97282000
CY2015	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	188932000
CY2017	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	5423000
CY2016	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	2025000
CY2015	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	1081000
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3732000
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	15762000
CY2017	us-gaap	Payments For Repurchase Of Trust Preferred Securities PaymentsForRepurchaseOfTrustPreferredSecurities	0
CY2016	us-gaap	Payments For Repurchase Of Trust Preferred Securities PaymentsForRepurchaseOfTrustPreferredSecurities	8030000
CY2015	us-gaap	Payments For Repurchase Of Trust Preferred Securities PaymentsForRepurchaseOfTrustPreferredSecurities	0
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	12046000
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	18731000
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	9516000
CY2017	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	67027000
CY2016	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	164336000
CY2015	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	10645000
CY2017	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	3010000
CY2016	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	459000
CY2015	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	0
CY2017	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	1500000
CY2016	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	7000000
CY2015	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	0
CY2017Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Checking PercentageOfInterestBearingDomesticDepositsToDepositsChecking	0.154
CY2016Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Checking PercentageOfInterestBearingDomesticDepositsToDepositsChecking	0.159
CY2017Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Money Market PercentageOfInterestBearingDomesticDepositsToDepositsMoneyMarket	0.169
CY2016Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Money Market PercentageOfInterestBearingDomesticDepositsToDepositsMoneyMarket	0.115
CY2017Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Savings PercentageOfInterestBearingDomesticDepositsToDepositsSavings	0.13
CY2016Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Savings PercentageOfInterestBearingDomesticDepositsToDepositsSavings	0.145
CY2017Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2016Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000
CY2016Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2016Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	0
CY2016Q4	us-gaap	Preferred Stock Value PreferredStockValue	0
CY2017	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><div style="display: inline; text-decoration: underline;">Reclassifications</div><div style="display: inline; font-family:'Times New Roman', Times, serif;font-size:10pt;">: Certain items in the prior years’ financial statements have been reclassified to conform to the current year presentation.</div></div></div></div></div></div>
CY2017	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	90000000
CY2016	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	110000000
CY2015	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	20000000
CY2017	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	1576000
CY2016	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	1601000
CY2015	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	655000
CY2017	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	2720000
CY2016	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0
CY2015	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	52504000
CY2016	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	172173000
CY2015	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	93873000
CY2017	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-12962000
CY2016	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-23061000
CY2015	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-12798000
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	7619000
CY2016	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	264000
CY2015	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	1483000
CY2017	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	993000
CY2016	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	2059000
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	318000
CY2016	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	978000
CY2015	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	891000
CY2017	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	46000
CY2015	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	2967000
CY2017	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	111311000
CY2016	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	114757000
CY2015	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	120880000
CY2016	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	36000
CY2015	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	44000
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	76623000
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	74171000
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	46034000
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	45456000
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2950000
CY2016	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2900000
CY2015	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-1000000
CY2017	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	45000000
CY2016	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	3000000
CY2015	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	6000000
CY2017	us-gaap	Repurchase Agreement Counterparty Weighted Average Maturity Of Agreements1 RepurchaseAgreementCounterpartyWeightedAverageMaturityOfAgreements1	P1Y
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	61001000
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	40904000
CY2017	us-gaap	Schedule Of Repurchase Agreements ScheduleOfRepurchaseAgreements	<div style="display: inline; font-family: times new roman; font-size: 10pt"><table style="; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;" border="0" cellspacing="0" cellpadding="0"> <tr style="vertical-align: bottom;"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">2017</div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 1px;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">2016</div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 1px;"> </td> </tr> <tr style="vertical-align: bottom;"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 70%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Outstanding balance at year-end</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 12%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">118,748,000</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 12%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">131,710,000</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Weighted average interest rate at year-end</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 12%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">0.16</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt; text-align: left;">%</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 12%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">0.16</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt; text-align: left;">%</div> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Average daily balance during the year</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 12%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">116,587,000</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 12%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">149,079,000</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Weighted average interest rate during the year</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 12%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">0.16</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt; text-align: left;">%</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 12%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">0.14</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt; text-align: left;">%</div> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Maximum daily balance during the year</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 12%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">142,459,000</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 12%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">175,088,000</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> </table></div>
CY2017Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	118748000
CY2016Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	131710000
CY2016Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	5544000
CY2015Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	6121000
CY2017Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	5106000
CY2017	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	1229000
CY2016	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	1378000
CY2017	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	1667000
CY2016	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	1955000
CY2017Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	8400000
CY2016Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	8000000
CY2017	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.075
CY2016	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.0701
CY2017	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Expected Credit Losses ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueExpectedCreditLosses	0.0073
CY2016	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Expected Credit Losses ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueExpectedCreditLosses	0.0068
CY2017	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.118
CY2016	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Prepayment Speed ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed	0.115
CY2017	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Life1 ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageLife1	P3Y146D
CY2016	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Life1 ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageLife1	P3Y219D
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	1981000
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	1459000
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	684000
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	314000
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2017Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0016
CY2016Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0016
CY2017	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	116587000
CY2016	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	149079000
CY2017	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	142459000
CY2016	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	175088000
CY2017Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	42600000
CY2017	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	1351
CY2016	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	1362
CY2015	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	655000
CY2016	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	1601000
CY2017	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	1576000
CY2015	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	44000
CY2016	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	36000
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	46000
CY2015	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	403000
CY2016	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	327000
CY2017	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	363000
CY2015	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	891000
CY2016	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	978000
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	318000
CY2015Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	20000000
CY2015	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	15762000
CY2016	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	3732000
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	956419
CY2017	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	19500000
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	365870000
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	340811000
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	328138000
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	333804000
CY2017Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	40894000
CY2016Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	49389000
CY2017Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	33061000
CY2016Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	35523000
CY2017Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	283844000
CY2016Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	358259000
CY2017Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	78090000
CY2016Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	34204000
CY2017Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	77689000
CY2016Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	92042000
CY2017Q4	us-gaap	Time Deposits TimeDeposits	513578000
CY2016Q4	us-gaap	Time Deposits TimeDeposits	569417000
CY2017Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	361284000
CY2016Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	423248000
CY2017Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	266000000
CY2016Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	214000000
CY2017Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	152294000
CY2016Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	146169000
CY2017	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	887000
CY2016	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	414000
CY2015	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	2203000
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	20.38
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0
CY2016Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0
CY2017	us-gaap	Use Of Estimates UseOfEstimates	<div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style="display: inline; font-family: times new roman; font-size: 10pt"><div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><div style="display: inline; text-decoration: underline;">Use of Estimates</div><div style="display: inline; font-family:'Times New Roman', Times, serif;font-size:10pt;">: To prepare financial statements in conformity with accounting principles generally accepted in the United States of America, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. The allowance for loan losses and the fair values of financial instruments are particularly subject to change.</div></div></div></div></div></div>
CY2017	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	0
CY2016	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-100000
CY2017Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	0
CY2016Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	0
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16489070
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16310730
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16642140
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16478968
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16292086
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16609263

Files In Submission

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0001437749-18-003838.txt	Edgar Link	pending
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$MBWM
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2017 Q3 Form 10-K Financial Statement

#000143774918003838 Filed on March 05, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MBWM Mercantile Bank Corp Stock $mbwm

2017 Q3 Form 10-K Financial Statement

#000143774918003838 Filed on March 05, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MBWM
Mercantile Bank Corp Stock $mbwm