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v3.23.3

Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 USD ($) shares | Sep. 30, 2022 USD ($) shares | Sep. 30, 2023 USD ($) shares | Sep. 30, 2022 USD ($) shares | Dec. 31, 2022 USD ($)
Number of Unconsolidated Business Trusts Formed to Issue Trust Preferred Securities | 5 |  | 5 |  |
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Ending Balance | $ 0 |  | $ 0 |  | $ 0
Financing Receivable, Unamortized Loan Cost (Fee) | $ 2,400 |  | 2,400 |  | 1,000
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 | $ 10,200 |  | 10,200 |  | 3,600
Financing Receivable, Credit Loss, Expense (Reversal) | 3,300 | $ 2,900 | 5,900 | $ 3,500 |
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease) |  |  | (900) |  |
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) |  |  | (100) |  |
Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding | $ 1,390,000 |  | $ 1,390,000 |  | 1,380,000
Goodwill, Impairment Loss |  |  |  |  | $ 0
Core Deposits [Member] |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) | 10 years |  |  |  |
Restricted Stock [Member] |  |  |  |  |
Incremental Common Shares Attributable to Participating Nonvested Shares with Non-forfeitable Dividend Rights (in shares) | shares | 345,000 | 319,000 | 345,000 | 319,000 |
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |
Incremental Common Shares Attributable to Participating Nonvested Shares with Non-forfeitable Dividend Rights (in shares) | shares |  | 1,000 |  | 1,000 |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares | 5,000 | 5,000 | 5,000 | 5,000 |

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- Definition Number of days past due when interest income on commercial and mortgage loans is discontinued unless the loans are well-secured and in process of collection. + References No definition available. + Details
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- Definition Maximum number of days delinquent for consumer and credit card loans to be charged off. + References No definition available. + Details
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- Definition Amount of increase (decrease) in allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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