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v3.23.1

Note 1 - Significant Accounting Policies (Details Textual) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2023 USD ($) shares | Mar. 31, 2022 USD ($) shares | Dec. 31, 2022 USD ($) | Jan. 01, 2022 USD ($) | Dec. 31, 2021 USD ($)
Number of Unconsolidated Business Trusts Formed to Issue Trust Preferred Securities | 5 |  |  |  |
Debt Securities, Available-for-Sale, Allowance for Credit Loss |  |  | $ 0 |  |
Financing Receivable, Unamortized Loan Cost (Fee) | $ (1,400,000) |  | (1,000,000.0) |  |
Interest Income on Commercial and Mortgage Loans Discontinued Period (Day) | 90 days |  |  |  |
Maximum Delinquency Period for Consumer and Credit Card Loans to be Charged Off (Day) | 120 days |  |  |  |
Loan, Mortgage, Held-for-Sale, Fair Value Disclosure | $ 3,900,000 |  | 3,600,000 |  |
Financing Receivable, Credit Loss, Expense (Reversal) | 600,000 | $ 100,000 |  |  |
Allowance for Doubtful Accounts Receivable, Estimated Maximum Forecast, Increase in Allowance | 100,000 |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 42,877,000 | $ 35,153,000 | 42,246,000 |  | $ 35,363,000
Retained Earnings (Accumulated Deficit), Total | 232,123,000 |  | 216,313,000 |  |
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) | 100,000 |  |  |  |
Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding | $ 1,370,000,000 |  | $ 1,380,000,000 |  |
Core Deposits [Member] |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) | 10 years |  |  |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance |  |  |  | $ (400,000) | $ (400,000)
Retained Earnings (Accumulated Deficit), Total |  |  |  | 300,000 |
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] | Other Assets [Member] |  |  |  |  |
Deferred Income Tax Assets, Net |  |  |  | $ 100,000 |
Restricted Stock [Member] |  |  |  |  |
Incremental Common Shares Attributable to Participating Nonvested Shares with Non-forfeitable Dividend Rights (in shares) | shares | 360,000 | 335,000 |  |  |
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |
Incremental Common Shares Attributable to Participating Nonvested Shares with Non-forfeitable Dividend Rights (in shares) | shares |  | 8,000 |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares | 5,000 |  |  |  |

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