Receivables [Abstract] Schedule of Financing Receivable Allowance For Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Commercial real estate Commercial Real Estate Portfolio Segment [Member] Commercial and industrial Commercial Portfolio Segment [Member] Construction and land Construction And Land Portfolio Segment [Member] Construction And Land Portfolio Segment [Member] Consumer real estate Residential Mortgage [Member] Other consumer Consumer Portfolio Segment [Member] Financing Receivable Allowance For Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Allowance for loan losses: Financing Receivable, Allowance for Credit Losses [Roll Forward] Balance at beginning of period Financing Receivable, Allowance for Credit Losses Charge-offs Financing Receivable, Allowance for Credit Losses, Write-downs Recoveries Financing Receivable, Allowance for Credit Losses, Recovery Provision expense (benefit) Provision for Loan and Lease Losses Balance at end of period Allowance ending balance: Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Loans: Financing Receivable, Additional Information, Loans [Abstract] Financing Receivable, Additional Information, Loans [Abstract] Individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment PCI loans Impaired Purchase Credit Loans Recorded Investment Impaired purchase credit loans recorded investment. Total Loans and Leases Receivable, Gross Investments, Debt and Equity Securities [Abstract] Debt Securities, Held-to-maturity [Table] Debt Securities, Held-to-maturity [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Agency residential mortgage-backed securities Residential Mortgage Backed Securities [Member] Agency commercial mortgage-backed securities Commercial Mortgage Backed Securities [Member] Agency residential collateralized mortgage obligations Agency Collateralized Mortgage Backed Securities [Member] Agency Collateralized Mortgage Backed Securities Available For Sale And Held To Maturity Securities [Line Items] Available For Sale And Held To Maturity Securities [Line Items] Available For Sale And Held To Maturity Securities [Line Items] HTM - Amortized Cost Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract] Due in one year or less Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Due after one to five years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Due after five to ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Due after ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost Amortized cost of securities held-to-maturity Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Amortized Cost HTM - Fair Value Debt Securities, Held-to-maturity, Maturity, Fair Value, Rolling Maturity [Abstract] Due in one year or less Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due after one to five years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due after five to ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Due after ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Fair value of securities held-to-maturity Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Fair Value AFS - Fair Value Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract] Due in one year or less Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due after one to five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due after five to ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Due after ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Fair value of securities available-for-sale Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value Retirement Benefits [Abstract] Benefits Pension and Other Postretirement Benefits Disclosure [Text Block] Debt Disclosure [Abstract] Borrowed Funds Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block] Condensed Financial Information Disclosure [Abstract] Parent Company Only Condensed Financial Information Condensed Financial Information of Parent Company Only Disclosure [Text Block] Troubled Debt Restructuring, Debtor, Current Period [Table] Troubled Debt Restructuring, Debtor, Current Period [Table] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Nonaccrual TDRs Nonperforming Financial Instruments [Member] Performing TDRs Performing Financial Instruments [Member] Troubled Debt Restructuring, Debtor, Current Period [Line Items] Troubled Debt Restructuring, Debtor, Current Period [Line Items] TDRs Financing Receivable, Modifications, Recorded Investment Outstanding commitments to lend additional funds to borrowers with TDR loans Loans and Leases Receivable, Impaired, Commitment to Lend Troubled debt restructuring non accrual period Troubled Debt Restructuring Non Accrual Period Minimum period a TDR loan is on non-accrual. Fair Value Disclosures [Abstract] Fair Value Fair Value Disclosures [Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] US government and agency securities US Government Agencies Debt Securities [Member] Municipal bonds Municipal Bonds [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Fair Value Debt Securities, Available-for-sale Goodwill and Intangible Assets Disclosure [Abstract] Changes In Carrying Amount of Company's Goodwill and Core Deposit Intangibles (Cdi) Schedule of Intangible Assets and Goodwill [Table Text Block] Estimated Aggregate Future Amortization Expense for Intangible Assets Remaining Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Restricted stock Restricted Stock [Member] Stock options Employee Stock Option [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2017 Plan 2017 Omnibus Incentive Plan [Member] 2017 Omnibus Incentive Plan [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Shares authorized (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Fungible share rate Share-based Compensation Arrangement by Share-based Payment Award, Fungible Share Rate Share-based Compensation Arrangement by Share-based Payment Award, Fungible Share Rate Shares available for issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Total unrecognized compensation expense related to non-vested shares Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted-average period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Vested, weighted-average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Contractual term Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Options, grants in period, weighted average grant date fair value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Estimated forfeiture rate Share Based Compensation Arrangements by Share-based Payment Award, Options, Expected Forfeiture Rate Share Based Compensation Arrangements by Share-based Payment Award, Options, Expected Forfeiture Rate Total intrinsic value of stock options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Data (Unaudited) Quarterly Financial Information [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Other Commitments [Table] Other Commitments [Table] Unused commitments to extend credit Commitments to Extend Credit [Member] Unused lines of credit Unused lines of Credit [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Unused capacity on Warehouse Purchase Program loans Unused Capacity on Warehouse Purchase Program Loans [Member] Unused Capacity on Warehouse Purchase Program Loans [Member] Standby letters of credit Standby Letters of Credit [Member] Other Commitments [Line Items] Other Commitments [Line Items] Unused commitments/capacity Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability Property, Plant and Equipment [Abstract] Premises and Equipment Property, Plant and Equipment Disclosure [Text Block] Premises and Equipment Property, Plant and Equipment [Table Text Block] Rent Commitments Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Interest income Interest and Dividend Income, Operating Interest expense Interest Expense Net interest income Interest Income (Expense), Net Provision for credit losses Securities gains and (losses) Available-for-sale Securities, Gross Realized Gain (Loss) Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Basic earnings per common share (in dollars per share) Earnings Per Share, Basic Diluted earnings per common share (in dollars per share) Earnings Per Share, Diluted Income tax adjustment to deferred tax asset related to the Tax Cuts and Jobs Act Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount Tax benefit related to change in tax rate and tax method of accounting Income Tax Expense (Benefit), Measurement Period Adjustment And Change In Tax Method Income Tax Expense (Benefit), Measurement Period Adjustment And Change In Tax Method Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Repurchase Agreements Repurchase Agreements [Member] Trust III Debentures Trust III Debentures [Member] Trust III Debentures [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] FHLB Advances Federal Home Loan Bank Advances [Member] Subordinated Debt Subordinated Debt [Member] Junior Subordinated Debt Junior Subordinated Debt [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Legacy Capital Trust III Legacy Capital Trust III [Member] Legacy Capital Trust III [Member] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Overnight Maturity Maturity Overnight [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Federal Home Loan Bank advances Advances from Federal Home Loan Banks Federal Home Loan Bank advances, rate Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate Repurchase Agreements Securities Sold under Agreements to Repurchase Subordinated debt Debt Instrument, Face Amount Debt, rate Debt Instrument, Interest Rate, Stated Percentage Junior subordinated debentures Junior Subordinated Notes Junior subordinated debentures, rate Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Provision for credit losses Provision for Loan, Lease, and Other Losses Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Deferred tax expense (benefit) Deferred Income Tax Expense (Benefit) Impact of Tax Cuts and Jobs Act on deferred taxes Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit) Tax Cuts and Jobs Act of 2017,Incomplete Accounting, Provisional Income Tax Expense (Benefit) Premium amortization and accretion of securities, net Accretion (Amortization) of Discounts and Premiums, Investments Accretion related to acquired loans Amortization of Debt Discount (Premium) Net (gain) loss on securities transactions Debt and Equity Securities, Gain (Loss) ESOP compensation expense Employee Stock Ownership Plan (ESOP), Compensation Expense Share-based compensation expense Share-based Compensation Excess tax benefit on vesting of stock awards Excess Tax Benefit from Share-based Compensation, Operating Activities Net gain on loans held for sale Gain (Loss) on Sales of Loans, Net Loans originated or purchased for sale Payments for Origination of Mortgage Loans Held-for-sale Proceeds from sale of loans held for sale Proceeds from Sale of Loans Held-for-sale FHLB stock dividends Fhlb Stock Dividends FHLB stock dividends. Bank-owned life insurance income Bank Owned Life Insurance Income (Gain) loss on sale and disposition of repossessed assets, premises and equipment Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Disposition of insurance subsidiary goodwill upon sale of subsidiary operations Goodwill, Impairment Loss Net change in deferred loan fees/costs Increase (Decrease) in Loans, Deferred Income Net change in accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Net change in other assets Increase (Decrease) in Other Operating Assets Net change in other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Available for sale securities: Debt Securities, Available-for-sale [Abstract] Maturities, prepayments and calls Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Purchases Payments to Acquire Debt Securities, Available-for-sale Proceeds from sale of AFS securities Proceeds from Sale of Debt Securities, Available-for-sale Held to maturity securities: Proceeds from Sale and Maturity of Held-to-maturity Securities [Abstract] Maturities, prepayments and calls Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Purchases Payments to Acquire Held-to-maturity Securities Originations of Warehouse Purchase Program loans Payments for Warehouse Purchase Program Loan Held for Investment Payments for Warehouse Purchase Program Loan Held for Investment Proceeds from pay-offs of Warehouse Purchase Program loans Proceeds from Warehouse Purchase Program Loan Held for Investment Proceeds from Warehouse Purchase Program Loan Held for Investment Net change in loans held for investment, excluding Warehouse Purchase Program Payments to Acquire Loans Held-for-investment Redemption of FHLB and FRB stock and other Proceeds from Sale of Federal Home Loan Bank Stock Purchase of FHLB and FRB stock and other Payments to Acquire Federal Home Loan Bank Stock Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from sale of assets Proceeds from Sales of Assets, Investing Activities Net cash (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Net change in deposits Increase (Decrease) in Deposits Proceeds from FHLB advances Proceeds from FHLBank Borrowings, Financing Activities Repayments on FHLB advances Payments of FHLBank Borrowings, Financing Activities Proceeds from borrowings Proceeds from Issuance of Debt Repayments of borrowings Repayments of Debt Payment of dividends Payments of Ordinary Dividends, Common Stock Activity in employee stock plans Proceeds from Stock Plans Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net change in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Beginning cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Ending cash and cash equivalents Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Income taxes paid Income Taxes Paid Supplemental noncash disclosures: Other Noncash Investing and Financing Items [Abstract] Transfers from loans to other real estate owned Real Estate Owned, Transfer to Real Estate Owned Income Statement [Abstract] Interest and dividend income Interest and Dividend Income, Operating [Abstract] Loans, including fees Interest and Fee Income, Loans and Leases Taxable securities Interest Income, Securities, Operating, Taxable Nontaxable securities Interest Income, Securities, Operating, Tax Exempt Interest-bearing deposits in other financial institutions Interest Income, Deposits with Financial Institutions FHLB and FRB stock and other Interest And Dividend Income Federal Home Loan Bank And Federal Reserve Bank Stock Interest and dividend income on FHLB and Federal Reserve Bank stock. Total interest and dividend income Interest expense Interest Expense [Abstract] Deposits Interest Expense, Deposits FHLB advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-term Repurchase agreements and other borrowings Interest Expense, Other Total interest expense Provision for credit losses Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Non-interest income Noninterest Income [Abstract] Service charges and other fees Service Charges And Other Fees Service Charges And Other Fees Net gain on sale of mortgage loans held for sale Bank-owned life insurance income Net gain (loss) on securities transactions Debt and Equity Securities, Realized Gain (Loss) Gain (loss) on sale and disposition of assets Gain (Loss) on Sale of Assets and Asset Impairment Charges Other Noninterest Income, Other Operating Income Total non-interest income Noninterest Income Non-interest expense Noninterest Expense [Abstract] Salaries and employee benefits Labor and Related Expense Advertising Advertising Expense Occupancy and equipment Occupancy, Net Outside professional services Professional Fees Regulatory assessments Federal Deposit Insurance Corporation Premium Expense Data processing Information Technology and Data Processing Office operations Non-interest expense - Office Operations Non-interest expense - Office Operations Other Other Noninterest Expense Total non-interest expense Noninterest Expense Income before income tax expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income Earnings per share: Earnings Per Share [Abstract] Basic (in dollars per share) Diluted (in dollars per share) Dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Depreciation expense Depreciation Rent expense Operating Leases, Rent Expense Rental income Rental Income, Nonoperating Rent payments receivable in the future Operating Leases, Future Minimum Payments Receivable Number of parcels of land for future development Number of Parcels Held for Future Development Number of Parcels Held for Future Development Regulatory Capital Requirements [Abstract] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Company Parent Company [Member] Bank Subsidiaries [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Total risk-based capital Capital [Abstract] Actual, Amount Capital Actual, Ratio Capital to Risk Weighted Assets Required for Capital Adequacy Purposes, Amount Capital Required for Capital Adequacy Required for Capital Adequacy Purposes, Ratio Capital Required for Capital Adequacy to Risk Weighted Assets To Be Well-Capitalized, Amount Capital Required to be Well Capitalized To Be Well-Capitalized, Ratio Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 risk-based capital Tier One Risk Based Capital [Abstract] Actual, Amount Tier One Risk Based Capital Actual, Ratio Tier One Risk Based Capital to Risk Weighted Assets Required for Capital Adequacy Purposes, Amount Tier One Risk Based Capital Required for Capital Adequacy Required for Capital Adequacy Purposes, Ratio Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets To Be Well-Capitalized, Amount Tier One Risk Based Capital Required to be Well Capitalized To Be Well-Capitalized, Ratio Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Common equity tier 1 risk-based capital Tier One Common Risk Based Capital [Abstract] Tier One Common Risk Based Capital [Abstract] Actual, Amount Tier One Common Risk Based Capital Tier One Common Risk Based Capital Actual, Ratio Tier One Common Risk Based Capital To Risk Weighted Assets Tier One Common Risk Based Capital To Risk Weighted Assets Required for Capital Adequacy Purposes, Amount Tier One Common Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Tier One Common Risk Based Capital required For Capital Adequacy To Risk Weighted Assets Required for Capital Adequacy Purposes, Ratio Tier One Common Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets1 Tier One Common Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets To Be Well-Capitalized, Amount Tier One Common Risk Based Capital Required To Be Well Capitalized Tier One Common Risk Based Capital Required To Be Well Capitalized To Be Well-Capitalized, Ratio Tier One Common Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Tier One Common Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Tier 1 leverage Tier One Leverage Capital [Abstract] Actual, Amount Tier One Leverage Capital Actual, Ratio Tier One Leverage Capital to Average Assets Required for Capital Adequacy Purposes, Amount Tier One Leverage Capital Required for Capital Adequacy Required for Capital Adequacy Purposes, Ratio Tier One Leverage Capital Required for Capital Adequacy to Average Assets To Be Well-Capitalized, Amount Tier One Leverage Capital Required to be Well Capitalized To Be Well-Capitalized, Ratio Tier One Leverage Capital Required to be Well Capitalized to Average Assets Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Loans held for sale, at fair value Loans Receivable Held-for-sale, Amount Gross loans held for investment, excluding Warehouse Purchase Program Deferred costs (fees) and discounts, net Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums Allowance for loan losses Loans and Leases Receivable, Allowance Net loans held for investment, excluding Warehouse Purchase Program Loans and leases receivable net excluding Warehouse Purchase Program Loans and leases receivable net excluding Warehouse Purchase Program Warehouse Purchase Program Loans Receivable, Gross, Mortgage Warehouse Lending Total loans held for investment Loans and Leases Receivable, Net Amount Banking and Thrift [Abstract] Scheduled Maturity of Time Deposits Scheduled Maturity of Time Deposits [Table Text Block] Scheduled Maturity of Time Deposits [Table Text Block] Interest Expense on Deposits Interest Expense on Deposits [Table Text Block] Interest Expense on Deposits [Table Text Block] Schedule of Condensed Financial Statements [Table] Condensed Financial Statements [Table] Parent Company Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] ASSETS Assets [Abstract] Cash on deposit at subsidiary Cash and Due from Banks Investment in banking subsidiary Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Receivable from banking subsidiary Due from Related Parties ESOP note receivable and other assets Employee Stock Ownership Plan Notes and Other Receivables Employee Stock Ownership Plan Notes and Other Receivables Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Borrowings Subordinated Debt Other liabilities Other Liabilities Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent Total liabilities and shareholders’ equity Liabilities and Equity Revenue from Contract with Customer [Abstract] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Card services income Card Services [Member] Card Services [Member] Service charges on deposits Deposit Service Charges [Member] Deposit Service Charges [Member] Title income Title Insurance Policies [Member] Title Insurance Policies [Member] Gains (losses) on the sale of other real estate owned Other Real Estate Owned Sales [Member] Other Real Estate Owned Sales [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Loans Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Allowances for Loan Losses and Off-Balance Sheet Credit Losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Impaired Loans Impaired Financing Receivables [Table Text Block] Non-Performing (Nonaccrual) Loans Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Outstanding and Recorded Balances of Loans Modified as TDRs Troubled Debt Restructurings on Financing Receivables [Table Text Block] Analysis of Age of Recorded Investment in Loans Past Due Financing Receivables [Table Text Block] Real Estate and Commercial and Industrial Credit Risk Profile by Internally Assigned Grade Financing Receivable Credit Quality Indicators [Table Text Block] Consumer Credit Exposure Credit Risk Profile Based on Payment Activity Consumer Credit Exposure Credit Risk Profile Based On Payment Activity [Table Text Block] Consumer Credit Exposure Credit Risk Profile Based On Payment Activity [Table Text Block] Income Tax Disclosure [Abstract] Deferred tax assets: Deferred Tax Assets, Gross [Abstract] Allowance for loan losses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Deferred compensation arrangements Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits Self-funded health insurance Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Self Insurance Non-accrual interest Deferred Tax Assets, Non-Accrual Interest Deferred Tax Assets, Non-Accrual Interest Restricted stock and stock options Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals Fair value mark on purchased loans Deferred Tax Assets Fair Value Mark on Purchased Loans Deferred Tax Assets Fair Value Mark on Purchased Loans Net unrealized loss on securities available for sale Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross Other Deferred Tax Assets, Other Deferred tax assets, gross Deferred Tax Assets, Gross Deferred tax liabilities: Deferred Tax Liabilities, Gross [Abstract] Depreciation Deferred Tax Liabilities, Property, Plant and Equipment Partnerships — CRA-purposed private equity funds Deferred Tax Liabilities, Partnership Deferred Tax Liabilities, Partnership Fair value mark on loans Deferred Tax Liabilities, Financing Arrangements Fair value mark on investment securities Deferred Tax Liabilities, Investments Net deferred loan costs Deferred Tax Liabilities, Deferred Expense, Debt Issuance Costs Fair value mark on subordinated debt Deferred Tax Liabilities, Fair Value Mark On Debt Deferred Tax Liabilities, Fair Value Mark On Debt Other Deferred Tax Liabilities, Other Deferred tax liabilities, gross Deferred Tax Liabilities, Gross Net deferred tax asset (liability) Deferred Tax Assets, Net Net deferred tax asset (liability) Deferred Tax Liabilities, Net Statement of Comprehensive Income [Abstract] Net income Change in unrealized gains (losses) on securities available for sale Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax Reclassification of amount realized through securities transactions Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Tax effect Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax Reclassification of income tax effects of the Tax Cuts and Jobs Act (see Note 15 for more information) Other Comprehensive Income (Loss), Tax Cuts And Jobs Act Of 2017, Reclassification Adjustment from AOCI Other Comprehensive Income (Loss), Tax Cuts And Jobs Act Of 2017, Reclassification Adjustment from AOCI Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Regulatory Capital Matters Regulatory Capital Requirements under Banking Regulations [Text Block] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Nonvested Shares for the Company's Stock Plans Schedule of Nonvested Share Activity [Table Text Block] Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Summary of Activity under Stock Option Portion of Equity Incentive Plan Share-based Compensation, Stock Options, Activity [Table Text Block] Accounting Policies [Abstract] Principles of Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash Flows Cash and Cash Equivalents, Policy [Policy Text Block] Restrictions on Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Securities Marketable Securities, Policy [Policy Text Block] Mortgage Loans Held for Sale Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block] Warehouse Purchase Program Loans and Loans Finance, Loans and Leases Receivable, Policy [Policy Text Block] Acquired Loans Certain Loans and Debt Securities Acquired in Transfer, Recognizing Interest Income on Impaired Loans, Policy [Policy Text Block] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Allowance for Loan Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] FHLB stock and other restricted securities Federal Home Loan Bank Stock Policy [Policy Text Block] Federal Home Loan Bank Stock Policy [Policy Text Block] Bank-Owned Life Insurance Life Insurance Purchase Policy [Policy Text Block] Life Insurance Purchase Policy [Policy Text Block] Premises and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Identifiable Intangibles Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Foreclosed Assets Finance, Loan and Lease Receivables, Held for Investments, Foreclosed Assets Policy [Policy Text Block] Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Repurchase/Resell Agreements Repurchase and Resale Agreements Policy [Policy Text Block] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Advertising Expense Advertising Costs, Policy [Policy Text Block] Share-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Retirement Plans Postemployment Benefit Plans, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Earnings per common share Earnings Per Share, Policy [Policy Text Block] Comprehensive Income (Loss) Comprehensive Income, Policy [Policy Text Block] Employee stock ownership plan (ESOP) Employee Stock Ownership Plan (ESOP), Policy [Policy Text Block] Dividend Restriction Dividend Restriction [Policy Text Block] Dividend Restriction [Policy Text Block] Loss Contingencies Commitments and Contingencies, Policy [Policy Text Block] Transfers of Financial Assets Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block] Operating Segments Segment Reporting, Policy [Policy Text Block] Loan Commitments and Related Financial Instruments Loan Commitments And Related Financial Instruments [Policy Text Block] Loan Commitments And Related Financial Instruments [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Adoption of New Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Interest rate lock commitments Interest Rate Lock Commitments [Member] Forward mortgage-backed securities trades Forward Contracts [Member] Commercial loan interest rate swaps and caps Interest Rate Swap [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Loan customer counterparty Loan Customer Counterparty [Member] Loan Customer Counterparty [Member] Financial institution counterparty Financial Institution Counterparty [Member] Financial Institution Counterparty [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Derivatives not designated as hedging instruments Not Designated as Hedging Instrument [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 2 Fair Value, Inputs, Level 2 [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring Fair Value, Measurements, Recurring [Member] 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] Securities available for sale, at fair value Loans held for sale Loans Held-for-sale, Fair Value Disclosure Derivative asset Derivative Asset, Fair Value, Gross Asset Derivative liability Derivative Liability, Fair Value, Gross Liability Outstanding principal Loans Held-for-sale, Fair Value Disclosure, Outstanding Principal Balance Loans Held-for-sale, Fair Value Disclosure, Outstanding Principal Balance Goodwill Goodwill [Roll Forward] Balance Goodwill Balance Core Deposit Intangibles Finite-lived Intangible Assets [Roll Forward] Balance Finite-Lived Core Deposits, Gross Amortization of core deposit intangible Amortization of Intangible Assets Balance Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Beginning (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Ending (in shares) Fully vested and expected to vest (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted- Average Exercise Price per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Beginning (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Ending (in dollars per share) Fully vested and expected to vest (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Exercisable (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted- Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Fully vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Abstract] Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Fully vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Earnings Per Common Share Earnings Per Share [Text Block] Other Other Portfolio Segment [Member] Other Portfolio Segment [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Non-recurring Fair Value, Measurements, Nonrecurring [Member] Impaired loans Loans Receivable, Fair Value Disclosure Foreclosed assets Other Real Estate, Foreclosed Assets, and Repossessed Assets Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Level 1 Fair Value, Inputs, Level 1 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and cash equivalents, carrying amount Cash and cash equivalents, fair value Cash and Cash Equivalents, Fair Value Disclosure Securities held to maturity, carrying amount Debt Securities, Held-to-maturity Securities held to maturity, fair value Debt Securities, Held-to-maturity, Fair Value Loans held for investment, net, carrying amount Loans held for investment, net, fair value Loans and leases receivable net excluding Warehouse Purchase Program, Fair Value Disclosure Loans and leases receivable net excluding Warehouse Purchase Program, Fair Value Disclosure Loans held for investment - Warehouse Purchase Program, carrying amount Loans held for investment - Warehouse Purchase Program, fair value Loans Receivable, Gross, Mortgage Warehouse Lending, Fair Value Disclosure Loans Receivable, Gross, Mortgage Warehouse Lending, Fair Value Disclosure FHLB and other restricted securities, at cost, carrying amount Federal Home Loan Bank Stock Accrued interest receivable Interest Receivable Financial liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Deposits, carrying value Deposits Deposits, fair value Deposits, Fair Value Disclosure FHLB advances, carrying value FHLB advances, fair value Federal Home Loan Bank Borrowings, Fair Value Disclosure Repurchase agreements, carrying value Repurchase agreements, fair value Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure Subordinated debt, carrying value Subordinated debt, fair value Subordinated Debt Obligations, Fair Value Disclosure Accrued interest payable, carrying value Interest Payable Accrued interest payable, fair value Accrued Liabilities, Fair Value Disclosure Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] IRLCs Forward mortgage-backed securities trades Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Income (loss) on derivatives Derivative, Gain (Loss) on Derivative, Net Income Tax Expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Reconciliation of Effective Income Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Commitments and Contingent Liabilities Commitments and Contingencies Disclosure [Text Block] Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected term of stock options Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected stock price volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected dividends Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Domain] Class of Financing Receivable, Type [Domain] Other Consumer Performing Non-performing Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Total Loans and Leases Receivable, Gross, Consumer, Other Collateral [Axis] Collateral [Axis] Collateral [Domain] Collateral [Domain] Pledged as Collateral Collateral Pledged [Member] Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] Carrying value of securities pledged as collateral Debt Securities, Held-to-Maturity Debt Securities, Held-to-Maturity Number of securities in an unrealized loss position Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Number of securities in an unrealized loss position for greater than one year Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Balance Time Deposits, Fiscal Year Maturity [Abstract] 2019 Time Deposit Maturities, Next Twelve Months 2020 Time Deposit Maturities, Year Two 2021 Time Deposit Maturities, Year Three 2022 Time Deposit Maturities, Year Four 2023 and thereafter Time Deposit Maturities, Year Five Total Time Deposits Weighted Average Rate Weighted Average Rate of Time Deposits [Abstract] 2019 Time Deposits, Weighted Average Interest Rate, Maturities Year One 2020 Time Deposits, Weighted Average Interest Rate, Maturities Year Two 2021 Time Deposits, Weighted Average Interest Rate, Maturities Year Three 2022 Time Deposits, Weighted Average Interest Rate, Maturities Year Four 2023 and thereafter Time Deposits, Weighted Average Interest Rate, Maturities Year Five Total Time Deposits, Weighted Average Interest Rate, Maturities Total Time Deposits, Weighted Average Interest Rate, Maturities Total Liabilities measured at fair value Financial and Nonfinancial Liabilities, Fair Value Disclosure Amount in mortgage loans in the process of foreclosure Mortgage Loans in Process of Foreclosure, Amount Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Commercial loan Commercial Loan [Member] Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Received Derivative, Fixed Interest Rate, Received Derivative, Fixed Interest Rate, Received Paid Derivative, Fixed Interest Rate, Paid Derivative, Fixed Interest Rate, Paid Proceeds Proceeds from Sale of Available-for-sale Securities Gross gains Debt Securities, Available-for-sale, Realized Gain Gross losses Debt Securities, Available-for-sale, Realized Loss Tax expense of securities gains/losses reclassified from accumulated other comprehensive income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Reconciliation of Numerator and Denominator of Basic and Diluted Earnings per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Quarterly Financial Data (Unaudited) Quarterly Financial Information [Text Block] Stockholders' Equity Note [Abstract] Share Transactions Stockholders' Equity Note Disclosure [Text Block] Allowance for loan impairment related to PCI loans Portion of allowance for loan losses allocated to PCI loans Portion of allowance for loan losses allocated to PCI loans Loan amounts past due over 90 days and still accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing PCI loan amounts considered non-performing Non-Performing PCI Loans Non-Performing PCI Loans Gross interest income that would have been recognized on non-accrual loans if loans were performing Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans Period past due at which loan payments are considered default Number Of Days To Define Payment Default Number Of Days To Define Payment Default Schedule of Maturities of Long-term Debt [Table] Federal Home Loan Bank, Advances [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Federal Reserve Bank Federal Reserve Bank [Member] Federal Reserve Bank [Member] Long-term Debt [Line Items] Federal Home Loan Bank, Advances [Line Items] 2019 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 2020 Long-term Debt, Maturities, Repayments of Principal in Year Two 2021 Long-term Debt, Maturities, Repayments of Principal in Year Three 2022 Long-term Debt, Maturities, Repayments of Principal in Year Four 2023 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Total Long-term Debt Borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Buildings Land, Buildings and Improvements [Member] Furniture, fixtures and equipment Furniture and Fixtures [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] ASU 2016-02 Accounting Standards Update 2016-02 [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Forecast Scenario, Forecast [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Number of full-service branches Number Of Banking Offices Number Of Banking Offices Days past due to be considered delinquent Period After Which Loans Are Considered Delinquent Period After Which Loans Are Considered Delinquent Days delinquent for interest on loan to be discontinued Delinquent Period of Loan to Discontinued Interest Income Delinquent Period of Loan to Discontinued Interest Income Days delinquent for a consumer loan to be typically charged off Consumer Loans Are Typically Charged Off Consumer Loans Are Typically Charged Off Consumer loans, nonperforming, period Before placed into nonaccrual status Consumer Loans, Nonperforming, Period Before Being Placed Into Nonaccrual Status Consumer Loans, Nonperforming, Period Before Being Placed Into Nonaccrual Status Threshold for not being measured on an individual basis, unpaid principal for impaired financing receivable Impaired Financing Receivable, Unpaid Principal Balance, Threshold Amount for Not being Measured on an Individual Basis Impaired Financing Receivable, Unpaid Principal Balance, Threshold Amount for Not being Measured on an Individual Basis Performance period for troubled debt restructuring loans to return to accrual status Minimum Performing Period Of Loans To Return To Accrual Status Minimum Performing Period Of Loans To Return To Accrual Status Useful lives Property, Plant and Equipment, Useful Life Advertising expense Number of segments Number of Reportable Segments Right-of-use assets Operating Lease, Right-of-Use Asset Lease liabilities Operating Lease, Liability Investment Holdings [Table] Investment Holdings [Line Items] Assets sold under agreements to repurchase, market value protection percentage Assets Sold under Agreements to Repurchase, Market Value Protection Percentage Assets Sold under Agreements to Repurchase, Market Value Protection Percentage Term of repurchase agreement Repurchase Agreement, Maturity of Agreement Repurchase Agreement, Maturity of Agreement Repurchase agreements Debt face amount Document and Entity Information [Abstract] Document and Entity Information Document Type Document Type Document Fiscal Period Focus Document Fiscal Period Focus Document Period End Date Document Period End Date Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Entity Filer Category Entity Filer Category Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Public Float Entity Public Float Related Party Transactions [Abstract] Loans to Executive Officers, Directors, and Affiliates Schedule of Related Party Transactions [Table Text Block] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Balance at beginning of period Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Reclassifications from nonaccretable Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications (to) from Nonaccretable Difference Disposals Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans Accretion Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Balance at end of period Percentage of shares authorized to be repurchased Stock Repurchase Program, Percentage of Outstanding Shares Authorized to be Repurchased Stock Repurchase Program, Percentage of Outstanding Shares Authorized to be Repurchased Shares of common stock outstanding (in shares) Common Stock, Shares, Outstanding Repurchase authorized (in shares) Stock Repurchase Program, Number of Shares Authorized to be Repurchased Stock repurchased and retired during period (in shares) Stock Repurchased and Retired During Period, Shares Remaining available for purchase (in shares) Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased Deposits Deposit Liabilities Disclosures [Text Block] Statement of Financial Position [Abstract] Assets Fair value of securities held-to-maturity Allowance for loan losses on loans held for investment Liabilities and Shareholders' Equity Shareholders’ Equity Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Unearned Employee Stock Ownership Plan (ESOP) shares (in shares) Employee Stock Ownership Plan (ESOP), Number of Suspense Shares Commercial Real Estate Commercial and Industrial Construction and Land Consumer Real Estate Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Pass Pass [Member] Special Mention Special Mention [Member] Substandard Substandard [Member] Doubtful Doubtful [Member] Total Schedule of Short-term Debt [Table] Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Redemption price Debt Instrument, Redemption Price, Percentage Unamortized discount and debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Trust preferred securities, value Trust Preferred Securities, Value Trust Preferred Securities, Value Trust preferred securities purchased (in shares) Trust Preferred Securities, Shares Trust Preferred Securities, Shares Trust preferred securities, liquidation amount (in dollars per share) Trust Preferred Securities, Liquidation Amount Per Share Trust Preferred Securities, Liquidation Amount Per Share Common stock, value Common Stock, Value, Outstanding Long-term debt, percentage bearing variable interest, percentage rate Trust preferred securities, purchase accounting adjustments Trust Preferred Securities, Purchase Accounting Adjustments Trust Preferred Securities, Purchase Accounting Adjustments Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Loans Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Schedule of Trading Securities and Other Trading Assets [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Agency residential mortgage-backed securities Agency commercial mortgage-backed securities Agency residential collateralized mortgage obligations Debt and Equity Securities, FV-NI [Line Items] Debt and Equity Securities, FV-NI [Line Items] AFS - Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract] Less than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 12 Months or More Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Total Debt Securities, Available-for-sale, Unrealized Loss Position AFS - Unrealized Loss Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] Less than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 12 Months or More Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss HTM - Fair Value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract] Less than 12 Months Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value 12 Months or More Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Total Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value HTM - Unrealized Loss Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position [Abstract] Less than 12 Months Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 12 Months or More Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Summary of Borrowed Funds Schedule of Long-term Debt Instruments [Table Text Block] Debt Pay Down Schedule Schedule of Maturities of Long-term Debt [Table Text Block] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss), Net AOCI Attributable to Parent [Member] Unearned ESOP Shares Unearned Esop Shares [Member] Unearned ESOP shares. Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance Other comprehensive income (loss), net of tax Reclassification of income tax effects of the Tax Cuts and Jobs Act (see Note 15 for more information) Tax Cuts And Jobs Act Of 2017, Reclassification From AOCI To Retained Earnings, Tax Effect Tax Cuts And Jobs Act Of 2017, Reclassification From AOCI To Retained Earnings, Tax Effect Dividends declared Dividends, Common Stock, Cash ESOP shares earned Amortization of ESOP Award Share-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Activity in employee stock plans Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Balance Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Amortized Cost, Related Gross Unrealized Gains and Losses, and Fair Value of Securities Available-for-Sale Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Amortized Cost, Related Gross Unrealized Gains and Losses, and Fair Value of Securities Held-to-Maturity Debt Securities, Held-to-maturity [Table Text Block] Amortized Cost and Fair Value of Held-to-Maturity Debt Securities and Fair Value of Available-for-Sale Securities by Contractual Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Sales Activity of Securities Schedule of Realized Gain (Loss) [Table Text Block] Securities with Unrealized Losses Aggregated by Investment and Length of Time that Individual Securities have been in Continuous Unrealized Loss Position Category Schedule of Unrealized Loss on Investments [Table Text Block] Significant Revenue Streams from Contracts with Customers Disaggregation of Revenue [Table Text Block] Related Party Transactions Related Party Transactions Disclosure [Text Block] Assets and Liabilities Measured at Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value of Financial Instruments Not Recorded at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of Condensed Balance Sheet Condensed Balance Sheet [Table Text Block] Schedule of Condensed Income Statement Condensed Income Statement [Table Text Block] Schedule of Condensed Cash Flow Statement Condensed Cash Flow Statement [Table Text Block] Interest-bearing demand Interest Expense, Interest Bearing Demand Deposit Interest Expense, Interest Bearing Demand Deposit Savings and money market Interest Expense, Savings And Money Market Interest Expense, Savings and Money Market Time Interest Expense, Time Deposits Total Share-based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] FHLB letters of credit Federal Home Loan Bank Certificates and Obligations (FHLB) [Member] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Financial guarantee Financial Guarantee [Member] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Reserve for off-balance sheet activities SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other liabilities Other Liabilities [Member] Credit card guarantees Guarantor Obligations, Current Carrying Value Valuation reserves SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Overdraft protection Bank Overdrafts, Overdraft Protection Bank Overdrafts, Overdraft Protection Loans pledged as collateral Loans Pledged as Collateral Unfunded commitments Commitment to Fund Private Equity Fund for Specific Purposes, Unfunded Portion Commitment to Fund Private Equity Fund for Specific Purposes, Unfunded Portion Investment in Community Reinvestment Act private equity funds Investment In Community Reinvestment Funds Investment In Community Reinvestment Funds Investment in Community Reinvestment Act private equity funds, ownership Investment In Community Reinvestment Funds, Ownership Investment In Community Reinvestment Funds, Ownership Mortgage repurchase liability Mortgage Repurchase Liability Mortgage Repurchase Liability Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Principal Deferrals Principal Deferrals [Member] Principal Deferrals [Member] Combination of Rate Reduction & Principal Deferral Combination Of Rate And Maturity [Member] Combination Of Rate And Maturity [Member] Other Other [Member] Other [Member] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Loans modified as a TDR Financing Receivable, Modifications, Post-Modification Recorded Investment Loan modified as a TDR which experienced subsequent payment default Financing Receivable, Modifications, Subsequent Default, Recorded Investment Goodwill and Core Deposit Intangibles Goodwill and Intangible Assets Disclosure [Text Block] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Unpaid Contractual Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Recorded Investment With No Allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment Recorded Investment With Allowance Impaired Financing Receivable, with Related Allowance, Recorded Investment Total Recorded Investment Impaired Financing Receivable, Recorded Investment Related Allowance Impaired Financing Receivable, Related Allowance Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized Impaired Financing Receivable, Interest Income, Accrual Method Amortized Cost Gross Unrealized Gains Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Gross Unrealized Losses Fair Value Federal statutory rate times financial statement income Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Effect of: Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount [Abstract] State taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount