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Tier One Leverage Capital, Capital Adequacy, Minimum Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Special Mention Special Mention [Member] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Bank-owned life insurance Bank Owned Life Insurance Other Other Assets Financial Instruments [Domain] Financial Instruments [Domain] Derivative [Table] Derivative [Table] Deferred tax liability Deferred Tax Liabilities, Net [Abstract] Interest Income Interest and Dividend Income, Operating [Abstract] Changes Affecting Comparability Comparability of Prior Year Financial Data, Policy [Policy Text Block] Number of Securities Debt Securities, Available-for-sale, Continuous 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Treasury Stock, Shares, Acquired Deposits with financial institutions Interest Income, Deposits with Financial Institutions Federal funds purchased and repurchase agreements Federal Funds Purchased and Securities Sold under Agreements to Repurchase Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Asset Derivatives Derivative assets Derivative Asset Individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Unrealized gain (losses) recognized during the reporting period on equity securities still held at the reporting date Equity Securities, FV-NI, Unrealized Gain (Loss) Other Deferred Tax Liabilities, Other Document Quarterly Report Document Quarterly Report Unrealized Losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Other assets Increase (Decrease) in Other Operating Assets Required to be considered well capitalized, amount Banking Regulation, Tier One Leverage Capital, Well Capitalized, Minimum Actual, amount Banking Regulation, Tier One Leverage Capital, Actual Proceeds from sale of available-for-sale securities Proceeds from Sale of Debt Securities, Available-for-sale Less than 12 Months Available For Sale Securities, Less Than Twelve Months [Abstract] Available For Sale Securities, Less Than Twelve Months [Abstract] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Number of Securities Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Financial Liabilities Liabilities, Fair Value Disclosure [Abstract] Foreclosed assets held for sale Repossessed Assets, Held-For-Sale Repossessed Assets, Held-For-Sale Total stock-based compensation Share-based Payment Arrangement, Expense Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Weighted-Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Salaries and employee benefits Labor and Related Expense Other non-interest income Noninterest Income, Other Operating Income Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Cash and Cash Equivalents, Beginning of Period Cash and Cash Equivalents, End of Period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table] Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table] Common stock par value (in dollars per share) Common Stock, Par or Stated Value Per Share Marketability discount Measurement Input, Discount Rate [Member] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Service charges and fees on customer accounts Service Charges And Fees [Member] Service Charges And Fees [Member] Entity Central Index Key Entity Central Index Key Required to be considered well capitalized, amount Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum Financing Receivable, Troubled Debt Restructuring [Line Items] Financing Receivable, Troubled Debt Restructuring [Line Items] Security Exchange Name Security Exchange Name One to Two Years Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Unrealized gain (loss) on available-for-sale securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Summary of Status and Changes in Performance-Based Awards Schedule of Nonvested Performance-based Units Activity [Table Text Block] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Paycheck Protection Program (“PPP”) Payment Protection Program [Member] Payment Protection Program Total non-interest expense Noninterest Expense Weighted average dilutive common shares (in shares) Weighted Average Number of Shares Outstanding, Diluted Income Tax Income Tax Disclosure [Text Block] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Current Fiscal Year End Date Current Fiscal Year End Date Within one year Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, Year One Within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Change in Accumulated Other Comprehensive Income ("AOCI") Stockholders' Equity Note Disclosure [Text Block] Loans, Nonaccrual Financing Receivable, Nonaccrual [Table Text Block] Private Equity Funds Private Equity Funds [Member] Measurement Basis [Axis] Measurement Basis [Axis] ATM and credit card interchange income ATM And Credit Card Interchange Income [Member] ATM And Credit Card Interchange Income [Member] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Three to Four Years Time Deposit Maturities, Rolling Year Four Loans, net of allowance for loan losses Loans Receivable, Fair Value Disclosure Occupancy Occupancy, Net Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Changes in Increase (Decrease) in Operating Capital [Abstract] Required to be considered well capitalized, ratio Banking Regulation, Tier One Leverage Capital Ratio, Well Capitalized, Minimum Allowance for Loan Losses Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts [Policy Text Block] Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Three to Four Years Long-term Debt, Maturities, Repayments of Principal in Rolling Year Four Weighted average yield Debt Securities, Available-for-sale, Rolling Maturity, Weighted Average Yield [Abstract] Employee stock purchase plan Employee Stock [Member] Acquisition of common stock for tax withholding obligations Payment, Tax Withholding, Share-based Payment Arrangement Software and communication Communication Debt and Equity Securities, FV-NI [Line Items] Debt and Equity Securities, FV-NI [Line Items] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] Total average impaired loans Impaired Financing Receivable, Average Recorded Investment Entity Address, Postal Zip Code Entity Address, Postal Zip Code Gross loans Total Loans Receivable Loans receivable Financing Receivable, before Allowance for Credit Loss Proceeds from Federal Home Loan Bank advances Proceeds from FHLBank Borrowings, Financing Activities Title of 12(b) Security Title of 12(b) Security Mutual Fund Mutual Fund [Member] Lease incentive Deferred Tax Assets, Lease Incentive Deferred Tax Assets, Lease Incentive Proceeds from employee stock purchase plan Proceeds from Stock Plans Statement [Table] Statement [Table] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Advertising Advertising Expense Other Deferred Tax Assets, Other After Five Years Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five Number of Securities Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Statistical Measurement [Axis] Statistical Measurement [Axis] Computed at the statutory rate (21%) Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Cover page. Cover [Abstract] Period end allowance for loan losses allocated to: Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Allowance for loan losses Less: Allowance for loan losses Beginning balance Ending balance Allowance for loan losses Financing Receivable, Allowance for Credit Loss Impaired Loans Impaired Financing Receivable, Policy [Policy Text Block] Four to Five Years Federal Home Loan Bank, Advances, Maturities Summary, Due in Rolling Year Five Actual, amount Banking Regulation, Tier One Risk-Based Capital, Actual Depreciation and amortization Depreciation, Amortization and Accretion, Net Unrealized Losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Net unrealized gain on securities available-for-sale Deferred Tax Liabilities, Unrealized Gains On Available-For-Sale Securities Deferred Tax Liabilities, Unrealized Gains On Available-For-Sale Securities Unrealized Losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Required to be considered well capitalized, ratio Common Equity Tier One Capital Required To Be Well Capitalized Ratio Common Equity Tier One Capital Required To Be Well Capitalized Ratio Contract value Financial Instruments Subject To Mandatory Redemption, Contract Value Financial Instruments Subject To Mandatory Redemption, Contract Value Deferred income taxes Deferred Income Tax Expense (Benefit) Items not requiring (providing) cash Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]