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Value, Less Than 1 Year Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Provision for loan losses Provision for loan losses Provision (Reversal) Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Derivative [Line Items] Derivative [Line Items] Collateral [Axis] Collateral Held [Axis] Costs to sell Measurement Input, Cost to Sell [Member] 5.75% Fixed-to-Floating Rate Subordinated Notes 5.75% Fixed-to-Floating Rate Subordinated Notes [Member] 5.75% Fixed-to-Floating Rate Subordinated Notes Purchase of Company's common shares at cost (in shares) Stock Repurchased During Period, Shares Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table] Cash dividends declared per common share (in usd per share) Cash dividends declared, per share (in usd per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Summary of Amortized Cost and Estimated Fair Value by Maturity of Company's Investment Securities Investments Classified by Contractual Maturity Date [Table Text Block] Corporate bonds Corporate Bond Securities [Member] Revolving Loans Financing Receivable, Excluding Accrued Interest, Revolving Amount of Gain Reclassified from AOCI into Income Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Summary of Activity in Allowance for Credit Losses Financing Receivable, Allowance for Credit Loss [Table Text Block] Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Tax-exempt interest Interest Income, Securities, Operating, Tax Exempt Gross unrealized losses, Over 1 Year Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Unallocated common stock held by: Unallocated Common Stock Held By [Abstract] Unallocated common stock held by. 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Entity Interactive Data Current Entity Interactive Data Current Noninterest Expense Noninterest Expense [Abstract] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Available for sale, After One Year through Five Years, Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Entity Small Business Entity Small Business Comprehensive Income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Bank card fees Credit Card [Member] Marketing and advertising Marketing and Advertising Expense Termination Date Trading Arrangement Termination Date Loans individually evaluated Impaired Loans Fair Value Disclosure Impaired Loans Fair Value Disclosure Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Net interest income Interest Income (Expense), Operating MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Net derivative amounts Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Total allowance for credit losses Financing Receivable, Allowance for Credit Loss, Including Lending Commitments Financing Receivable, Allowance for Credit Loss, Including Lending Commitments Document Type Document Type Held to maturity, After Ten Years, Fair Value Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value as of Grant Date Award Grant Date Fair Value Collateral Pledged Collateral Pledged [Member] Allowance for credit losses on available-for-sale securities Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Summary of Company's Investment Securities with Unrealized Losses, Aggregated by Type and Length Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Unallocated Common Stock Held by ESOP Unallocated Common Stock Held By ESOP [Member] Unallocated common stock held by ESOP. (Loss) gain on sale of assets, net Loss (gain) on sale of assets, net Gain (Loss) on Disposition of Assets Amortization and accretion of purchase accounting valuations and intangibles Amortization Of Acquisition Costs And Intangible Assets Amortization Of Acquisition Costs And Intangible Assets Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Foreclosed assets and ORE Foreclosed Assets And Other Real Estate Owned, Fair Value Disclosure Foreclosed assets fair value disclosure nonrecurring. Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Real estate loans: Real Estate Loans [Member] Real estate loans. Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Local Phone Number Local Phone Number Federal Home Loan Bank stock dividends Federal Home Loan Bank Stock Dividends Receivable Federal home loan bank stock dividends receivable. Net discount on loans Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount) Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Gross unrealized losses, Less Than 1 Year Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Total Financing Receivable, Excluding Accrued Interest, Modified, Accumulated Income before income tax expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Short-term Federal Home Loan Bank advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-Term Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Losses on equity investments Income (Loss) from Equity Method Investments Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount External Credit Rating, Standard & Poor's [Domain] External Credit Rating, Standard & Poor's [Domain] Executive Category: Executive Category [Axis] Collateralized mortgage obligations Collateralized Mortgage Obligations [Member] Foreclosed assets, net Foreclosed Assets Net Foreclosed assets net. Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment, Including Unfunded Lending Commitments Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment, Including Unfunded Lending Commitments Summary of Assets Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Equity Award [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Net derivative liabilities Derivative, Net Liability Position, Aggregate Fair Value Fair Value Measurements and Disclosures Fair Value Disclosures [Text Block] Gain on sale of loans, net Gain on loans sold, net Gain (Loss) on Sales of Loans, Net Level 3 Fair Value, Inputs, Level 3 [Member] U.S. government agency US Government Agencies Debt Securities [Member] Supplementary cash flow information: Supplemental Cash Flow Information [Abstract] Accrued interest payable and other liabilities Accounts Payable and Accrued Liabilities PEO Name PEO Name Unearned income Deferred Discounts, Finance Charges and Interest Included in Receivables Increase in accrued interest payable and other liabilities Increase (Decrease) in Accrued Liabilities Advances from FHLB average balance Advances From Federal Home Loan Bank Average Balance Advances From Federal Home Loan Bank Average Balance Allowance for credit losses on held-to-maturity securities Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] 30-59 Days Past Due Financial Asset, 30 to 59 Days Past Due [Member] Loss duration (in months) Debt Securities, Available-for-Sale, Period Of Continuous Loss Position For Investment Securities Period of continuous loss position for investment securities. Entity Tax Identification Number Entity Tax Identification Number Cash and cash equivalents Cash and Due from Banks Summary of Past Due Loans Financing Receivable, Past Due [Table Text Block] Current Loans Current Financial Asset, Not Past Due [Member] Credit Loss Status [Axis] Credit Loss Status [Axis] Noninterest Income Noninterest Income [Abstract] Cash and cash equivalents, beginning Cash and cash equivalents, ending Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Risk participation agreements Risk Participation Agreements [Member] Risk Participation Agreements Other loans: Other Loans [Member] Other loans. Total FHLB advances Federal Home Loan Bank, Advances, Weighted Average Interest Rate Reversal of provision for unfunded commitments Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal), Unfunded Commitments Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal), Unfunded Commitments Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Income from bank-owned life insurance Bank Owned Life Insurance Income Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Allowance for credit losses: Financing Receivable, Allowance for Credit Loss [Roll Forward] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Fair Value, Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Common Stock issued under incentive plans (in shares) Stock Issued during Period share under Incentive Plans, Net of Shares Surrendered in Payment Stock Issued during Period share under Incentive Plans, Net of Shares Surrendered in Payment Non-cash compensation Share-Based Payment Arrangement, Noncash Expense Interest Expense Interest Expense, Operating and Nonoperating [Abstract] Compensation and benefits Labor and Related Expense BBB/BB/B Standard & Poor's, BBB or BB or B Rating [Member] Standard & Poor's, BBB or BB or B Rating Increase in loans, net Payments for (Proceeds from) Loans and Leases Proceeds from maturities, prepayments and calls on securities held to maturity Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Available for sale, After Five Years through Ten Years, Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Basic (in usd per share) Basic earnings per common share (in usd per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Purchase of Company’s common stock Payments for Repurchase of Common Stock Range [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Long-term Federal Home Loan Bank advances Long-Term Federal Home Loan Bank Advances Amount of Gain (Loss) Recognized in OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Award Type [Axis] Award Type [Axis] Interest rate contracts Interest Rate Contract [Member] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Commercial and residential properties Real Estate [Member] Retained earnings Retained Earnings (Accumulated Deficit) Consumer Consumer Portfolio Segment [Member] Cash surrender value of bank-owned life insurance Bank Owned Life Insurance Product and Service [Axis] Product and Service [Axis] Foreclosed real estate assets Repossessed Assets Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common stock Common Stock [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Gross charge-offs, origination year - 4 years prior to current fiscal year Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff Cover [Abstract] Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Derivative Contract [Domain] Derivative Contract [Domain] Gross charge-offs, origination year - 1 year before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Nonrecurring Basis Receivable [Policy Text Block] Equity Awards Adjustments Equity Awards Adjustments [Member] Total Past Due Financial Asset, Past Due [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Total Liabilities and Shareholders’ Equity Liabilities and Equity Goodwill and core deposit intangibles Intangible Asset, Including Goodwill, after Accumulated Amortization Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Stock options Share-Based Payment Arrangement, Option [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Reclassification adjustment for income (loss) Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Revolving Loans Converted to Term Loans Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff Pass Pass [Member] Summary of Loans, Net of Unearned Income Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Long-term Debt and Borrowings Long-Term Debt [Text Block] Name Awards Close in Time to MNPI Disclosures, Individual Name Held to maturity, After Five Years through Ten Years, Amortized Cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10 Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Preferred stock, $0.01 par value - 10,000,000 shares authorized; none issued Preferred Stock, Value, Issued 30-89 Days Past Due Financial Asset, 30 to 89 Days Past Due [Member] Financial Asset, 30 to 89 Days Past Due Adjustment to Compensation: Adjustment to Compensation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Decrease in average balance of FHLB advances Increase (Decrease) in Loans from Federal Home Loan Banks Number of loans Financing Receivable, Individually Evaluated For Impairment, Number Of Loans Financing Receivable, Individually Evaluated For Impairment, Number Of Loans Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest paid on deposits and borrowed funds Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Forms, printing and supplies Supplies and Postage Expense Hedging Designation [Axis] Hedging Designation [Axis] 60-89 Days Past Due Financial Asset, 60 to 89 Days Past Due [Member] Federal Reserve Discount Window And U.S. Bankruptcy Trustee Federal Reserve Discount Window And U.S. Bankruptcy Trustee [Member] Federal Reserve Discount Window And U.S. Bankruptcy Trustee Regulatory fees Regulatory Fees Regulatory fees. Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total Assets, Fair Value Disclosure Proceeds from sale of foreclosed assets Proceeds from Sale of Foreclosed Assets Name Measure Name Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Loans, including fees Interest and Fee Income, Financing Receivable Additional Paid-in capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position Accounts receivable, Inventory and Equipment Equipment [Member] Name Trading Arrangement, Individual Name Subordinated debt expense Interest Expense, Subordinated Notes and Debentures Short-term FHLB advances Federal Home Loan Bank, Advance, Maturity, Year One Company Selected Measure Amount Company Selected Measure Amount Financing Receivables, Period Past Due [Axis] Financial Asset, Aging [Axis] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Deposits: Deposits [Abstract] AAA/AA/A Standard & Poor's, AAA or AA or A Rating [Member] Standard & Poor's, AAA or AA or A Rating Accounts and Financing Receivables [Table] Accounts and Financing Receivables [Table] Increase in cash surrender value of bank-owned life insurance Life Insurance, Corporate or Bank Owned, Change in Value Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses Financing Receivable, Allowance for Credit Loss, Collectively Evaluated Derivative liabilities Derivative Liability Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax expense Income Tax Expense (Benefit) Total noninterest expense Noninterest Expense Award Timing Method Award Timing Method [Text Block] Net change in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Charge-offs Total Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Numerator: Net Income (Loss) Attributable to Parent [Abstract] Notional Amount Derivative Liability, Notional Amount Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Net Income Net income Net income available to common shareholders Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Proceeds from sale of office properties and equipment Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Schedule of Financing Receivables Past Due [Table] Financing Receivable, Past Due [Table] Restatement Determination Date: Restatement Determination Date [Axis] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Origination year - 1 year before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Summary of Information Pertaining to Non-accrual Financing Receivable, Nonaccrual [Table Text Block] Credit Rating, Standard & Poor's [Axis] Credit Rating, Standard & Poor's [Axis] Investment securities portfolio, effective period Investment Securities Portfolio, Effective Period Investment Securities Portfolio, Effective Period Gross derivative assets Derivative Asset, Subject to Master Netting Arrangement, before Offset Number of loans subsequent default after modification Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default, Number Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default, Number Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Held to maturity, After Ten Years, Amortized Cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 Derivative Instruments and Hedging Activities Disclosure [Abstract]