Receivables [Abstract] Remaining nonaccretable discounts on loans acquired Certain Loans Acquired in Transfer, Nonaccretable Difference Carrying value of loans with nonaccretable discounts Loans And Leases Receivable, With Nonaccretable Discounts, Net Amount Loans And Leases Receivable, With Nonaccretable Discounts, Net Amount 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] Accretable discount at beginning of period Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Less: Accretion and payoff of loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Other changes, net Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Other Increase (Decrease) Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Other Increase (Decrease) Accretable discount at end of period Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Accounting Policies [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock Options Share-based Payment Arrangement, Option [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Residential Residential Portfolio Segment [Member] Commercial Commercial Portfolio Segment [Member] Construction Construction Portfolio Segment [Member] Construction Portfolio Segment [Member] Consumer Consumer Portfolio Segment [Member] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Real estate: Real Estate Loan [Member] Credit card Credit Card Receivable [Member] Other consumer Other Consumer [Member] Other Consumer [Member] Internal Credit Assessment [Axis] 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] Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Loans receivable, net of allowance for loan losses of $15,514 and $13,301 at March 31, 2020 and December 31, 2019, respectively Financing Receivable, before Allowance for Credit Loss Leases [Abstract] Leases Lessee, Operating Leases [Text Block] Portfolio Loans Receivable Financing Receivables [Text Block] Financing Receivable, Troubled Debt Restructuring [Table] Financing Receivable, Troubled Debt Restructuring [Table] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Performing Performing Financial Instruments [Member] Nonperforming Nonperforming Financial Instruments [Member] Acquired loans Acquired Loans [Member] Acquired Loans [Member] Financing Receivable, Troubled Debt Restructuring [Line Items] Financing Receivable, Troubled Debt Restructuring [Line Items] Number of Contracts Financing Receivable, Modifications, Number of Contracts Recorded Investment Financing Receivable, Troubled Debt Restructuring Segments Segment Reporting Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] 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) AOCI Attributable to Parent [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance (in shares) Common Stock, Shares, Outstanding Beginning balance Stockholders' Equity Attributable to Parent Accounting Standards Update [Extensible List] Accounting Standards Update [Extensible List] Net income Net Income (Loss) Attributable to Parent Unrealized gain on investment securities available for sale, net of income taxes Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Unrealized loss on cash flow hedging derivative, net of income taxes Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Stock options exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Stock options exercised Stock Issued During Period, Value, Stock Options Exercised Shares issued as compensation (in shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Shares issued as compensation Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Shares repurchased and retired (in shares) Stock Repurchased and Retired During Period, Shares Shares repurchased and retired Stock Repurchased and Retired During Period, Value Ending balance (in shares) Ending balance Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Commitments to Extend Credit Commitments to Extend Credit [Member] Commercial Commercial real estate Commercial Real Estate Portfolio Segment [Member] Residential real estate Home equity Home Equity Loan [Member] Secured credit card Personal Personal Loan [Member] Personal Loan [Member] Construction commitments Construction Loans [Member] Residential loans held for sale Loans Held For Sale [Member] Loans Held For Sale [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Unused lines of credit Unused Commitments to Extend Credit Letters of credit Letters of Credit Outstanding, Amount Statement of Financial Position [Abstract] Assets Assets [Abstract] Cash and due from banks Cash and Due from Banks Interest bearing deposits at other financial institutions Interest-bearing Deposits in Banks and Other Financial Institutions Federal funds sold Federal Funds Sold Total cash and cash equivalents Cash, Cash Equivalents, and Federal Funds Sold Investment securities available for sale Debt Securities, Available-for-sale Restricted investments Restricted Investments Loans held for sale Loans Held-for-sale, Fair Value Disclosure Small Business Administration Payroll Protection Program (“SBA-PPP”) loans receivable, net of fees Financing Receivable, Small Business Administration, Paycheck Protection Program, Net Of Fees Financing Receivable, Small Business Administration, Paycheck Protection Program, Net Of Fees Portfolio loans receivable, net of deferred fees and costs and net of allowance for loan losses of $22,016 and $13,301 Financing Receivable, after Allowance for Credit Loss Premises and equipment, net Property, Plant and Equipment, Net Accrued interest receivable Accrued Investment Income Receivable Deferred income taxes Deferred Income Tax Assets, Net Foreclosed real estate Real Estate Acquired Through Foreclosure Other assets Other Assets Total assets Assets Liabilities Liabilities [Abstract] Deposits Deposits, Interest-bearing and Noninterest-bearing, Alternative [Abstract] Noninterest-bearing, including related party balances of $20,821 and $16,009 Noninterest-bearing Deposit Liabilities Interest-bearing, including related party balances of $126,703 and $125,304 Interest-bearing Deposit Liabilities Total deposits Deposits Federal Home Loan Bank advances Long-term Federal Home Loan Bank Advances Other borrowed funds Other Borrowings Accrued interest payable Interest Payable Other liabilities Other Liabilities Total liabilities Liabilities Stockholders' equity Stockholders' Equity Attributable to Parent [Abstract] Common stock, $.01 par value; 49,000,000 shares authorized; 13,682,198 and 13,894,842 issued and outstanding Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders' equity Total liabilities and stockholders' equity Liabilities and Equity Fair Value Disclosures [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] U.S. government-sponsored enterprises US Government-sponsored Enterprises Debt Securities [Member] Municipal Municipal Bonds [Member] Corporate Corporate Debt Securities [Member] Mortgage-backed securities Collateralized Mortgage Backed Securities [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value, Recurring [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 1 Inputs Fair Value, Inputs, Level 1 [Member] Level 2 Inputs Fair Value, Inputs, Level 2 [Member] Level 3 Inputs Fair Value, Inputs, Level 3 [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] Investment securities available for sale Loans held for sale Derivative assets Derivative Asset Derivative liabilities Derivative Liability Income Statement [Abstract] Deposits, related party Interest Expense, Deposits, Related Party Interest Expense, Deposits, Related Party Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents Cash and Cash Equivalents Disclosure [Text Block] Loans and Leases Receivable Disclosure [Table] Loans and Leases Receivable Disclosure [Table] Type of Borrower [Axis] Type of Borrower [Axis] Class of Financing Receivable, Type of Borrower [Domain] Class of Financing Receivable, Type of Borrower [Domain] Owner Occupied Real Estate Owner Occupied Real Estate [Member] Owner Occupied Real Estate [Member] Investor Real Estate Investor Real Estate [Member] Investor Real Estate [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Paycheck Protection Program Paycheck Protection Program [Member] Paycheck Protection Program [Member] Collateral Held [Axis] Collateral Held [Axis] Collateral Held [Domain] Collateral Held [Domain] Savings Deposits Savings Deposits [Member] Savings Deposits [Member] Loans and Leases Receivable Disclosure [Line Items] Loans and Leases Receivable Disclosure [Line Items] Loans receivable, gross Deferred origination fees, net Loans and Leases Receivable, Deferred Income Allowance for loan losses Financing Receivable, Allowance for Credit Loss Portfolio loans receivable, net Fixed interest rate term Loans And Leases Receivable, Fixed Interest Rate Term Loans And Leases Receivable, Fixed Interest Rate Term Initial commitment term Loans And Leases Receivable, Initial Commitment Term Loans And Leases Receivable, Initial Commitment Term Balloon payment period Loans And Leases Receivable, Balloon Payment Period Loans And Leases Receivable, Balloon Payment Period Debt service coverage ratio Loans And Leases Receivable, Covenant Compliance, Debt Service Coverage Ratio Loans And Leases Receivable, Covenant Compliance, Debt Service Coverage Ratio Percent of real estate portfolio Loans And Leases Receivable, Percent Of Real Estate Portfolio Loans And Leases Receivable, Percent Of Real Estate Portfolio Amortization period Loans And Leases Receivable, Amortization Period Loans And Leases Receivable, Amortization Period Principal to collateral value ratio, percent Loans And Leases Receivable, Principal To Collateral Value Ratio, Percent Loans And Leases Receivable, Principal To Collateral Value Ratio, Percent Repayment history used for scoring model Loans And Leases Receivable, Repayment History Used For Scoring Model Loans And Leases Receivable, Repayment History Used For Scoring Model Lease asset Operating Lease, Right-of-Use Asset Less: Accumulated amortization Operating Lease, Right-Of-Use Asset, Accumulated Amortization Operating Lease, Right-Of-Use Asset, Accumulated Amortization Net lease asset Operating Lease, Right-Of-Use Asset, Net Operating Lease, Right-Of-Use Asset, Net Operating lease, liability Operating Lease, Liability Operating lease, liability, statement of financial position [Extensible List] Operating Lease, Liability, Statement of Financial Position [Extensible List] Amounts due in: Lessee, Operating Lease, Liability, Payment, Due [Abstract] 2020 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year 2021 Lessee, Operating Lease, Liability, to be Paid, Year One 2022 Lessee, Operating Lease, Liability, to be Paid, Year Two 2023 Lessee, Operating Lease, Liability, to be Paid, Year Three 2024 Lessee, Operating Lease, Liability, to be Paid, Year Four Total future lease payments Lessee, Operating Lease, Liability, to be Paid Discount of cash flows Lessee, Operating Lease, Liability, Undiscounted Excess Amount Present value of net future lease payments Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Loans Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule Of Activity In Accretable Discounts On Loans Acquired Schedule Of Activity In Accretable Discounts On Loans Acquired [Table Text Block] Schedule Of Activity In Accretable Discounts On Loans Acquired [Table Text Block] Allowance for Credit Losses on Loans Receivables Financing Receivable, Allowance for Credit Loss [Table Text Block] Past Due Loans Receivables Financing Receivable, Past Due [Table Text Block] Impaired Loans Receivables Impaired Financing Receivables [Table Text Block] Loans Receivables Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Troubled Debt Restructurings on Loans Receivables Financing Receivable, Troubled Debt Restructuring [Table Text Block] Schedule Of Outstanding Loan Commitments Other Commitments [Table Text Block] Schedule of Credit Losses for Financing Receivables Financing Receivable, Current, Allowance for Credit Loss [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Church Street Capital Church Street Capital [Member] Church Street Capital [Member] Loans outstanding Number of reportable segments Number of Reportable Segments Investments, Debt and Equity Securities [Abstract] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] U.S. government-sponsored enterprises Municipal Corporate Mortgage-backed securities Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract] 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 longer Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Total Debt Securities, Available-for-sale, Unrealized Loss Position Unrealized Losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Less than 12 months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 12 months or longer 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 Number of securities in a loss position for greater than twelve months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Schedule of Assets Sold under Agreements to Repurchase [Table] Schedule of Assets Sold under Agreements to Repurchase [Table] Federal Home Loan Bank Federal Home Loan Bank Advances [Member] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Amortized Cost Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Assets Sold under Agreements to Repurchase [Line Items] Assets Sold under Agreements to Repurchase [Line Items] Securities pledged Security Owned and Pledged as Collateral, Fair Value Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Fair Value Fair Value Disclosures [Text Block] 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] Schedule of Fair Value of Loans Held For Sale Schedule Of Fair Value Of Loans Held For Sale [Table Text Block] Schedule Of Fair Value Of Loans Held For Sale [Table Text Block] Fair Value Measurements, Nonrecurring Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Fair Value Measurements, Recurring and Nonrecurring Fair Value, by Balance Sheet Grouping [Table Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Open Forward Delivery Sales Agreements Open Forward Delivery Sales Agreement [Member] Open Forward Delivery Sales Agreement [Member] Open Mandatory Delivery Commitments Open Mandatory Delivery Commitments [Member] Open Mandatory Delivery Commitments [Member] Interest Rate Lock Commitments Interest Rate Lock Commitments [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Notional amount Derivative, Notional Amount Fair amounts, liabilities Fair value amounts, assets Amortized Cost Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Within one year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Over one to five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Over five to ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Over ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Fair Value Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] Within one year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Over one to five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Over five to ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Over ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Fair Value Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Aggregate fair value Contractual principal Difference Changes Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Loans Held for Sale Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Accounting Standards Update and Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Accounting Standards Update [Axis] Accounting Standards Update [Axis] Accounting Standards Update [Domain] Accounting Standards Update [Domain] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] Revision of Prior Period [Axis] Revision of Prior Period [Axis] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Revision of Prior Period, Accounting Standards Update, Adjustment Revision of Prior Period, Accounting Standards Update, Adjustment [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Right-of-use asset Reclassification of deferred rent Deferred Lease Income, after Accumulated Amortization Adjustment to retained earnings Statement of Comprehensive Income [Abstract] Other comprehensive income (loss): Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Unrealized gain on investment securities available for sale OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Reclassification of realized gain on sale of investment securities available for sale Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Unrealized loss on cash flow hedging derivative Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax, Parent Other comprehensive income (loss) Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Income tax expense relating to the items above Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Unearned net fees Contract with Customer, Liability Fair Value, Measurements, Nonrecurring Fair Value, Nonrecurring [Member] Level 1 Inputs Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Measurement Input, Cost to Sell Measurement Input, Cost to Sell [Member] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Valuation Technique, Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Valuation Technique, Consensus Pricing Model Valuation Technique, Consensus Pricing Model [Member] Impaired loans, net Impaired Financing Receivable, with Related Allowance, Recorded Investment Impaired loans, valuation allowance Impaired Financing Receivable, Related Allowance Impaired loans Impaired Financing Receivable, Recorded Investment Foreclosed real estate Discounts to appraisals or cash flows for estimated holding and/or selling costs (percent) Impaired Financing Receivable, Measurement Input Impaired Financing Receivable, Measurement Input Discounts to appraisals for estimated holding and/or selling costs (percent) Real Estate Acquired Through Foreclosure, Measurement Input Real Estate Acquired Through Foreclosure, Measurement Input 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 Total Recorded Investment Related Allowance Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Interest Recognized Impaired Financing Receivable, Interest Income, Accrual Method Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash used by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Provision for loan losses Financing Receivable, Credit Loss, Expense (Reversal) Provision for losses on mortgage loans sold Provision for Other Losses Provision for off balance sheet credit risk Provision for Other Credit Losses Amortization on investments, net Accretion (Amortization) of Discounts and Premiums, Investments Depreciation and amortization Depreciation, Nonproduction Stock-based compensation expense Share-based Payment Arrangement, Noncash Expense Director and employee compensation paid in stock Share Based Payment Arrangement, Director And Employee Compensation Paid In Stock Share Based Payment Arrangement, Director And Employee Compensation Paid In Stock Deferred income tax benefit Deferred Income Tax Expense (Benefit) Amortization of debt issuance expense Amortization of Debt Issuance Costs Gain on sale of securities available for sale Gain (Loss) on Sale of Investments Mortgage banking revenue Mortgage Banking And Servicing, Gain (Loss) Mortgage Banking And Servicing, Gain (Loss) Proceeds from sales of loans held for sale Proceeds from Sale of Loans Held-for-sale Originations of loans held for sale Payments for Origination of Mortgage Loans Held-for-sale Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Prepaid income taxes and taxes payable Increase (Decrease) in Prepaid Taxes Other assets Increase (Decrease) in Other Operating Assets Accrued interest payable Increase (Decrease) in Interest Payable, Net Other liabilities Increase (Decrease) in Other Operating Liabilities Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of securities available for sale Payments to Acquire Debt Securities, Available-for-sale Maturities, calls and principal paydowns of securities available for sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Proceeds from sale of securities available for sale Proceeds from Sale of Debt Securities, Available-for-sale Sales (purchases) of restricted investments Payments For (Proceeds From) Restricted Investments Payments For (Proceeds From) Restricted Investments Increase in SBA-PPP loans receivable, net Payments For (Proceeds From) Loans Receivable, Small Business Administration, Paycheck Protection Program Payments For (Proceeds From) Loans Receivable, Small Business Administration, Paycheck Protection Program Increase in portfolio loans receivable, net Payments for (Proceeds from) Loans Receivable Disposals (purchases) of premises and equipment, net Payments for (Proceeds from) Productive Assets Proceeds from sales of foreclosed real estate Proceeds from Sale of Foreclosed Assets 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 increase (decrease) in: Increase (Decrease), Financing Activities, Net [Abstract] Increase (Decrease), Financing Activities, Net [Abstract] Noninterest-bearing deposits Net Change Noninterest-bearing Deposits, Domestic Interest-bearing deposits Net Change Interest-bearing Deposits, Domestic Securities sold under agreements to repurchase Proceeds from (Payments for) in Securities Sold under Agreements to Repurchase Federal funds purchased Increase (Decrease) in Federal Funds Purchased Federal Home Loan Bank advances, net Increase (Decrease) in Loans from Federal Home Loan Banks Other borrowed funds Proceeds from (Repayments of) Other Debt Repurchase of common stock Payments for Repurchase of Common Stock Proceeds from exercise of stock options Proceeds from Stock Options Exercised Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents, beginning of year Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents, end of period Noncash activities: Noncash Investing and Financing Items [Abstract] Loans transferred to foreclosed real estate Real Estate Owned, Transfer to Real Estate Owned Change in unrealized gains on investments Unrealized Gain (Loss) on Investments Change in fair value of cash flow hedging derivative Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments Establishment of lease right-of-use asset Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Establishment of lease liability Establishment Of Lease Liability Establishment Of Lease Liability Cash paid during the period for: Supplemental Cash Flow Information [Abstract] Taxes Income Taxes Paid, Net Interest Interest Paid, Excluding Capitalized Interest, Operating Activities Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Premises and equipment Premises And Equipment [Member] Premises And Equipment [Member] Leasehold improvements Leasehold Improvements [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, plant and equipment, useful life Property, Plant and Equipment, Useful Life Nature of Business and Basis of Presentation Significant Accounting Policies [Text Block] Off Balance Sheet Reserve Unfunded Loan Commitment [Member] Mortgage Loan Put-back Reserve Mortgage Loans Sold [Member] Mortgage Loans Sold [Member] Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Balance at beginning of year Provision charged to operating expense Charge-offs Allowance for Loan and Lease Losses Write-offs, Net Balance at end of year Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Service charges on deposits Bank Servicing [Member] Credit card fees Credit Card [Member] Mortgage banking revenue Mortgage Banking [Member] Interest income Interest and Dividend Income, Operating [Abstract] Loans, including fees Interest and Fee Income, Loans and Leases Investment securities available for sale Interest Income, Debt Securities, Available-for-sale, Operating Federal funds sold and other Interest Income, Federal Funds Sold Total interest income Interest and Dividend Income, Operating Interest expense Interest Expense [Abstract] Deposits, includes payments to related parties of $184 and $862 for the three and nine months ended September 30, 2020, respectively, and $479 and $1,448 for the three and nine months ended September 30, 2019, respectively. Interest Expense, Deposits Borrowed funds Interest Expense, Borrowings Total interest expense Interest Expense Net interest income Interest Income (Expense), Net Provision for loan losses Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Noninterest income Noninterest Income [Abstract] Noninterest income Revenue from Contract with Customer, Including Assessed Tax Gain on sale of investment securities available for sale Debt Securities, Available-for-sale, Realized Gain (Loss) Other fees and charges Noninterest Income, Other Operating Income Total noninterest income Noninterest Income Noninterest expenses Noninterest Expense [Abstract] Salaries and employee benefits Labor and Related Expense Occupancy and equipment Occupancy And Equipment Expense Occupancy And Equipment Expense Professional fees Professional Fees Data processing Information Technology and Data Processing Advertising Advertising Expense Loan processing Loan Processing Fee Foreclosed real estate expenses, net Other Real Estate Expenses, Net Other Real Estate Expenses, Net Other operating Other Noninterest Expense Total noninterest expenses Noninterest Expense Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income Basic earnings per share (in dollars per share) Earnings Per Share, Basic Diluted earnings per share (in dollars per share) Earnings Per Share, Diluted Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Ex Transition Period Entity Ex Transition Period Entity Shell Company Entity Shell Company Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Allowance for loan losses Noninterest-bearing deposits, related party Noninterest Bearing Deposit Liabilities, Related Party Noninterest Bearing Deposit Liabilities, Related Party Interest-bearing deposits, related party Interest Bearing Deposit Liabilities, Related Party Interest Bearing Deposit Liabilities, Related Party 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 Common stock, shares outstanding (in shares) Carrying Amount Fair Value Level 1 Level 3 Financial assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and due from banks Interest bearing deposits at other financial institutions Federal funds sold Loans receivable, net (1) Loans Receivable, Fair Value Disclosure Restricted investments Restricted Investments, at Fair Value Financial liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Noninterest bearing deposits Noninterest Bearing Deposit Liabilities, Fair Value Disclosure Noninterest Bearing Deposit Liabilities, Fair Value Disclosure Interest bearing deposits Interest Bearing Deposit Liabilities, Fair Value Disclosure Interest Bearing Deposit Liabilities, Fair Value Disclosure FHLB advances and other borrowed funds Long Term Federal Home Loan Bank Advances And Other Borrowings, Fair Value Disclosure Long Term Federal Home Loan Bank Advances And Other Borrowings, Fair Value Disclosure Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments [Table Text Block] Schedule of Investment Portfolio in Continuous Unrealized Loss Position, Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block] Schedule of Pledged Securities Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block] Investments Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Charge-Offs Allowance for Loan and Lease Losses, Write-offs Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Allowance for Loan Losses Ending Balance Evaluated for Impairment: Individually Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Allowance for Loan Losses Ending Balance Evaluated for Impairment: Collectively Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Outstanding Loan Balances Evaluated for Impairment: Individually Financing Receivable, Individually Evaluated for Impairment Outstanding Loan Balances Evaluated for Impairment: Collectively Financing Receivable, Collectively Evaluated for Impairment U.S. government-sponsored enterprises Municipal Corporate Mortgage-backed securities Amortized Cost Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Proceeds from sales of securities sold Realized gains on investment sales Number of full service branches Lessee, Operating Lease, Number Of Full Service Branches Lessee, Operating Lease, Number Of Full Service Branches Number of locations Lessee, Operating Lease, Number Of Locations Lessee, Operating Lease, Number Of Locations Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent ROU assets Related lease liabilities Operating Lease, Liability, Net Operating Lease, Liability, Net Remaining term of contract Lessee, Operating Lease, Remaining Term Of Contract Lessee, Operating Lease, Remaining Term Of Contract Nature of operations Nature Of Operations [Policy Text Block] Nature Of Operations [Policy Text Block] Basis of presentation Basis of Accounting, Policy [Policy Text Block] Cash and cash equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Investment securities Investment, Policy [Policy Text Block] Small Business Administration Paycheck Protection Program Small Business Administration Paycheck Protection Program [Policy Text Block] Small Business Administration Paycheck Protection Program [Policy Text Block] Loans held for sale Financing Receivable, Held-for-sale [Policy Text Block] Loans and Allowance for Loan Losses Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts [Policy Text Block] Premises and equipment Property, Plant and Equipment, Policy [Policy Text Block] Leases Lessee, Leases [Policy Text Block] Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Earnings per share Earnings Per Share, Policy [Policy Text Block] Comprehensive income Comprehensive Income, Policy [Policy Text Block] Recently issued accounting pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Eliminations Intersegment Eliminations [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Commercial Bank Commercial Bank [Member] Commercial Bank [Member] CBHL Capital Bank Home Loans [Member] Capital Bank Home Loans [Member] OpenSky® Open Sky [Member] Open Sky [Member] Corporate Corporate Segment [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Interest income Interest expense Noninterest income Noninterest expense Total assets Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Net Investment Gain (Loss) Attributable to Parent AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Other comprehensive income (loss) before tax AOCI before Tax, Attributable to Parent Deferred tax benefit (expense) AOCI Tax, Attributable to Parent Total accumulated comprehensive income Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Domain] Financial Asset, Period Past Due [Domain] Loans 30-89 Days Past Due Financing Receivables, 30 To 89 Days Past Due [Member] Financing Receivables, 30 To 89 Days Past Due [Member] Loans 90 or More Days Past Due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Residential Real Estate Residential Real Estate [Member] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Portfolio Loans Past Due Financing Receivable, Past Due Current Loans Financing Receivable, Not Past Due Total Portfolio Loans Accruing Loans 90 or More Days Past Due Financing Receivable, 90 Days or More Past Due, Still Accruing Non-accrual Loans Financing Receivable, Nonaccrual Assets And Liabilities, Lessee Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, Maturity [Table Text Block] Interest income Interest Income, Operating SBA-PPP Loans Receivable