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Receivable, Troubled Debt Restructuring [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Unrealized loss on investment securities available for sale OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Total noninterest expenses Noninterest Expense Entity Address, Postal Zip Code Entity Address, Postal Zip Code Stock options exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Savings Deposits Savings Deposits [Member] Savings Deposits [Member] Unused lines of credit Unused Commitments to Extend Credit Measurement Basis [Axis] Measurement Basis [Axis] Loans receivable, net Financing Receivable, With Nonaccretable Discounts, Net Amount Financing Receivable, With Nonaccretable Discounts, Net Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Commitments to Extend Credit Commitments to Extend Credit [Member] Loans receivable, net Loans Receivable, Fair Value Disclosure Other comprehensive loss: Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Entity Address, Address Line One Entity Address, Address Line One Repayment of advances from Federal Reserve Bank Proceeds from (Repayments of) Other Debt Net cash provided by (used for) investing activities Net Cash Provided by (Used in) Investing Activities Entity Address, Address Line Two Entity Address, Address Line Two Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Loans and Allowance for Loan Losses Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts [Policy Text Block] Unrealized gain (loss) 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 Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Entity Shell Company Entity Shell Company Mortgage Loan Put-back Reserve Mortgage Loans Sold [Member] Mortgage Loans Sold [Member] Eliminations Intersegment Eliminations [Member] Schedule of Outstanding Loan Commitments Other Commitments [Table Text Block] Noninterest income Revenue from Contract with Customer, Including Assessed Tax Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Current Fiscal Year End Date Current Fiscal Year End Date Loans receivable, gross Total Portfolio Loans Financing Receivable, before Allowance for Credit Loss Construction Construction Portfolio Segment [Member] Construction Portfolio Segment [Member] Statement [Table] Statement [Table] Loans held for sale Loans held for sale Loans Held-for-sale, Fair Value Disclosure Asset-backed securities Asset-backed securities Asset-backed securities Asset-backed Securities [Member] Recently issued accounting pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Advertising Advertising Expense 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 Statistical Measurement [Axis] Statistical Measurement [Axis] Fixed interest rate term Financing Receivable, Fixed Interest Rate Term Financing Receivable, Fixed Interest Rate Term Allowance for loan losses Beginning Balance Ending Balance Allowance for loan losses Financing Receivable, Allowance for Credit Loss Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Over ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Less than 12 months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Operating lease, liability, statement of financial position [Extensible List] Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] 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] Interest Rate Lock Commitments Interest Rate Lock Commitments [Member] 12 months or longer Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Deferred income tax (benefit) expense Deferred Income Tax Expense (Benefit)