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Total deposits Deposits Schedule of Fair Value, Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Class A and B Common Stock Common Stock, Value, Issued Recoveries of amounts previously written off Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Line of Credit Line of Credit [Member] Entity Ex Transition Period Entity Ex Transition Period Restatement Determination Date Restatement Determination Date Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] Unrealized holding gains, (losses) tax Other Comprehensive Income (Loss) before Reclassifications, Tax Other operating expenses Other Noninterest Expense Measurement Frequency [Axis] Measurement Frequency [Axis] Net decrease in loans Payments for (Proceeds from) 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Entity Address, State or Province Available-for Sale, Gross Unrealized Losses, Total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Reinvestment of dividends on equity security Payments to Acquire Equity Securities, FV-NI PEO Total Compensation Amount PEO Total Compensation Amount Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Available for Sale Available-for-Sale Securities, Debt Maturities [Abstract] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] Weighted average shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Total securities, Allowance for Credit Losses Debt Securities, Allowance for Credit Losses, Excluding Accrued Interest Debt Securities, Allowance for Credit 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Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Short-Term Debt, Type [Domain] Short-Term Debt, Type [Domain] Loss Loss [Member] Loss Net increase in accrued interest receivable and other assets Increase (Decrease) in Accrued Interest Receivable, Net Total noninterest income Noninterest Income Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss Noninterest income Revenue from Contract with Customer, Including Assessed Tax Savings, interest-bearing checking and money market accounts Deposits, Savings, Interest-Bearing Checking And Money Market Deposits Deposits, Savings, Interest-Bearing Checking And Money Market Deposits Entity Address, City or Town Entity Address, City or Town Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Debt instrument, term extension Debt Instrument, Term Extension Debt Instrument, Term Extension 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Interest Income, Domestic Deposits [Abstract] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Securities Securities Loaned, Fair Value of Collateral Gain on sale of mortgage loans Gain on sale of mortgage loans Gain (Loss) on Sale of Mortgage Loans Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Axis] Other comprehensive income (loss), net of tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent After one year through five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Allowance for credit loss Less allowance for credit losses Balance, beginning of period Balance, end of period Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Two years before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before 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reciprocal Deposits Liabilities, Reciprocal Deposits Liabilities, Reciprocal Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Company Selected Measure Name Company Selected Measure Name Purchases of securities Payments to Acquire Debt Securities, Available-for-Sale Trust and wealth management Trust and Wealth Management Income [Member] Trust and Wealth Management Income Total securities, Accumulated Unrecognized Gain Debt Securities, Accumulated Unrecognized Gain, before Tax Debt Securities, Accumulated Unrecognized Gain, before Tax Interest on deposits Interest Expense, Deposits Within one year Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One After one year through five years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Supplemental disclosures of noncash investing activities Noncash Investing and Financing Items [Abstract] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Current fiscal year Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Asset Class [Domain] Asset Class [Domain] Credit Facility [Domain] Credit Facility [Domain] Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Weighted average shares outstanding, dilutive (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Total Loans Loans outstanding Total Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss Underlying Security Market Price Change Underlying Security Market Price Change, Percent Dividends declared on common stock Dividends Number of classes stock Number of Classes of Stock Number of Classes of Stock Gross Unrealized (Losses) Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Short-term borrowings Short-Term Debt Held to maturity number of positions Debt Securities, Held-To-Maturity, Unrealized Loss Position, Number Of Positions Debt Securities, Held-To-Maturity, Unrealized 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Adjustments Service Cost Pension Adjustments Service Cost [Member] Restricted securities, at cost Restricted Investments Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share External Credit Rating, Fitch [Domain] External Credit Rating, Fitch [Domain] Within one year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Schedule of Earnings Per Share, Basic Two Class Method Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Securities & Allowance for Securities Credit Losses Investment in Debt and Equity Securities and Other Trading Assets [Text Block] Proceeds from calls, maturities, and paydowns Proceeds from debt securities, available-for-sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Minimum Minimum [Member] Expiration Date Trading Arrangement Expiration Date Liabilities Liabilities [Abstract] Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Recapture of credit losses Net Investment in Lease, Credit Loss Expense (Reversal) [Abstract] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Overdrafts totaling Deposit Liabilities Reclassified as Loans Receivable Recapture of impairment loss on securities previously recognized in earnings Recovery Of Impairment Losses Previously Recognized In Earnings Recovery Of Impairment Losses 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after Allowance for Credit Loss Fair Value, Recurring Fair Value, Recurring [Member] Document Quarterly Report Document Quarterly Report Schedule of Available-for-sale and Held-to-Maturity Securities [Table] Schedule of Available-for-sale and Held-to-Maturity Securities [Table] Schedule of Available-for-sale and Trading Securities Total securities, Accumulated Unrecognized Loss Debt Securities, Accumulated Unrecognized Loss, before Tax Debt Securities, Accumulated Unrecognized Loss, before Tax Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] State and municipal securities US States and Political Subdivisions Debt Securities [Member] Lender Name [Axis] Lender Name [Axis] Special Mention Special Mention [Member] Gross charge-offs, three years before current year Financing Receivable, Excluding Accrued Interest, 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[Abstract] Stockholders’ equity Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report First National Bankers’ Bank First National Bankers’ Bank [Member] First National Bankers’ Bank Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Debt instrument, basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate City Area Code City Area Code Origination of loans held for sale Payment for Origination and Purchase, Loan, Held-for-Sale Conversion of Class B to Class A Common Stock Stock Issued During Period, Value, Conversion of Units Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Document Information [Table] Document Information [Table] All Individuals All Individuals [Member] Name Forgone Recovery, Individual Name Income tax expense related to the above amortization OCI, Debt Securities, Available-for-Sale, 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Reconciliation of net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Accrued interest receivable Accrued Interest Receivable, Fair Value Disclosure Accrued Interest Receivable, Fair Value Disclosure Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Premises and equipment, net of accumulated depreciation of $8,055 and $7,755, respectively Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization BBB / BB / B BBB / BB / B [Member] BBB / BB / B Debt Securities, Held-to-maturity, Allowance for Credit Loss [Table] Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table] Financial Instruments [Domain] Financial Instruments [Domain] Clients with an individual deposit exceeding 5% Number of Clients With an Individual Deposit Exceeding Five Percent of Total Deposits Number of Clients With an Individual Deposit Exceeding Five Percent of Total Deposits Available sale of securities, percentage of impairment in amortized cost basis Available-for-Sale Securities, Unrealized Loss Position, Aggregate Impairment, Percentage Available-for-Sale Securities, Unrealized Loss Position, Aggregate Impairment, Percentage Financial assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Four years before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Proceeds from sale of loans Proceeds from Sale and Collection, Loan, Held-for-Sale Total Fair Value Estimate of Fair Value Measurement [Member] Mortgage-backed securities Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] Securities held to maturity: Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss [Abstract] Undistributed net income for basic earnings per share Undistributed Earnings, Basic Total recapture of credit losses Provision for Loan, Lease, and Other Losses Other income Noninterest Income, Other Time, $250 and over Time Deposits, at or Above FDIC Insurance Limit Recapture of securities credit losses Recapture of securities credit losses Provision for Other Credit Losses All Trading Arrangements All Trading Arrangements [Member] Unrealized loss position for less than 12 months, fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Current Fiscal Year End Date Current Fiscal Year End Date Schedule of Debt Securities, Held-to-Maturity, Credit Quality Indicator Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table Text Block] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Recapture of loan credit losses Provision for (recapture of) credit losses Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Data processing and communication expenses Communications and Information Technology Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Schedule of Amortized Cost and Fair Value of Investment Securities Investments Classified by Contractual Maturity Date [Table Text Block] Corporate bonds Corporate Bond Securities [Member] Revolving Loans Financing Receivable, Excluding Accrued Interest, Revolving Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Schedule of Allowance for Credit Losses by Portfolio Type Financing Receivable, Allowance for Credit Loss [Table Text Block] Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Within one year Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Interest on securities, tax-exempt Interest Income, Securities, Operating, Tax Exempt Unrealized loss position for more than 12 months, unrealized loss Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Accumulated Other Comprehensive Loss Comprehensive Income (Loss) Note [Text Block] Equity Components [Axis] Equity Components [Axis] Product and Service [Domain] Product and Service [Domain] After one year through five years Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year One through Five Class A Common Stock Common Class A [Member] Entity Interactive Data Current Entity Interactive Data Current Noninterest expenses Noninterest Expense [Abstract] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] After one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Entity Small Business Entity Small Business Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Assets, fair value adjustment Assets, Fair Value Adjustment Termination Date Trading Arrangement Termination Date Securities held to maturity: Debt Securities, Held-to-Maturity, Fair Value [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return 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from banks Cash and Due from Banks Interest and dividends on securities, taxable Interest and Dividend Income, Securities, Operating Noninterest income Noninterest Income [Abstract] Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Total securities, Fair Value Debt Securities Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Undistributed earnings per share basic (in dollars per share) Earnings Per Share, Basic, Undistributed Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Allowance for credit losses: Financing Receivable, Allowance for Credit Loss [Roll Forward] Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Net decrease in time deposits Increase (Decrease) in Time Deposits Interest expense Interest Expense, Operating and Nonoperating [Abstract] Salaries and employee benefits Labor and Related Expense Fair Value Debt Securities, Held-to-Maturity, Fair Value, Maturity [Abstract] State franchise taxes Franchise Fees Tax Expense Franchise Fees Tax Expense Proceeds from calls, maturities and paydowns Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] After five years through ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Earnings per common share, basic (in dollars per share) Earnings Per Share, Basic Mortgage Backed Securities Collateralized Mortgage-Backed Securities [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Equity securities, at fair value Equity securities Equity Securities, FV-NI Per share dividends distributed diluted (in dollars per share) Earnings Per Share, Diluted, Distributed Deposit balance, total value of client deposits exceeding five percent of total deposits Deposit Balance, Total Value of Client Deposits Exceeding Five Percent of Total Deposits Deposit Balance, Total Value of Client Deposits Exceeding Five Percent of Total Deposits Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Short-Term Debt [Line Items] Short-Term Debt [Line Items] Common Stock Common Stock [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Recoveries collected Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Gross charge-offs, four years before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff Organization and Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Cover [Abstract] Reclassification Reclassification, Comparability Adjustment [Policy Text Block] Insurance [Abstract] Amortization of unrealized holding losses on securities available for sale, transferred to held to maturity OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax Gross charge-offs, year before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and stockholders’ equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Loans Held For Sale Loans Held For Sale [Member] Loans Held For Sale Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Asset Class [Axis] Asset Class [Axis] Gross charge-offs, Revolving to Term Loans Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff Pass Pass [Member] Related and Nonrelated Parties [Domain] Related and Nonrelated Parties [Domain] Schedule of Composition of the Loan Portfolio Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock: No par value, 100,000 shares authorized, no shares issued and outstanding Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash payments for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Recapture of credit losses Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total Assets, fair value disclosure Assets, Fair Value Disclosure Other consumer loans Other Consumer Portfolio Segment [Member] Other Consumer Portfolio Segment Name Measure Name Schedule of Amortized Cost of HTM Debt Securities Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table Text Block] Purchase of restricted securities, net Payments to Acquire Restricted Investments Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Interest and fees on loans Interest and Fee Income, Financing Receivable Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Available-for Sale, Fair Value of Investments with Unrealized Losses, Total Debt Securities, Available-for-Sale, Unrealized Loss Position Insurance expenses General Insurance Expense Amortization of unrealized holding losses, net of tax OCI, Before Reclassifications, Amortization Of Unrealized Holding Losses, Net of Tax, Attributable To Parent OCI, Before Reclassifications, Amortization Of Unrealized Holding Losses, Net of Tax, Attributable To Parent Federal Funds Purchased Federal Funds Purchased [Member] Accrued interest receivable Interest Receivable Name Trading Arrangement, Individual Name Per share dividends distributed basic (in dollars per share) Earnings Per Share, Basic, Distributed Total cash and cash equivalents Cash and Cash Equivalent Net increase in noninterest-bearing, savings, interest-bearing checking and money market deposits Increase (Decrease) in Other Deposits Company Selected Measure Amount Company Selected Measure Amount Fair value adjustment (gain) loss on equity security Equity securities, (loss) gain Equity Securities, FV-NI, Unrealized Gain (Loss) Investments, Debt and Equity Securities [Abstract] Depreciation and amortization of premises and equipment Depreciation, Depletion and Amortization Deposits: Deposits [Abstract] Entity Address, Address Line Two Entity Address, Address Line Two Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items] Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items] Schedule of Available-for-sale and Held-to-Maturity Securities Income tax expense Income Tax Expense (Benefit) Total noninterest expenses Noninterest Expense Award Timing Method Award Timing Method [Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Loans charged-off Gross charge-offs, Loans Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Net income Net income Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Restricted securities Restricted Investments, at Fair Value Statement [Table] Statement [Table] Pacific Coast Bankers’ Bank Pacific Coast Bankers’ Bank [Member] Pacific Coast Bankers’ Bank Restatement Determination Date: Restatement Determination Date [Axis] Undistributed net income for diluted earnings per share Undistributed Earnings, Diluted Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Year before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Federal funds purchased Federal Funds Purchased Interest-bearing domestic deposit, brokered Interest-Bearing Domestic Deposit, Brokered Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]