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Note 4 - Credit Quality (Details Textual) $ in Thousands | 3 Months Ended | 6 Months Ended | 16 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2020 USD ($)
Financing Receivable, Covered, before Allowance for Credit Loss, Total | $ 7,503 | $ 7,503 |  | $ 7,503 | $ 9,680 | [1]
Financing Receivable, Collectively Evaluated for Impairment |  |  |  |  | 2,138,921 |
Loans Deemed to be Impaired, Threshold |  |  |  |  | 500 |
Financing Receivable, Nonaccrual | 24,085 | 24,085 |  | $ 24,085 | 22,003 |
Financing Receivable, Nonaccrual, Interest Income | 15 | 24 |  |  |  |
Performing Status Returned Period (Month) |  |  |  | 6 months |  |
Financing Receivable, Number of Loans Modified During Period |  |  |  | 3,861 |  |
Financing Receivable, Loans Modified During Period |  |  |  | $ 469,210 |  |
Financing Receivable, Deferred Payments | 4,020 | 4,020 | $ 436,110 | 4,020 | 32,260 |
Financing Receivable, Troubled Debt Restructuring, Subsequent Default |  | 0 | $ 209 |  |  |
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts |  |  | 1 |  |  |
Impaired Loans [Member] |  |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  |  |  |  | 31,180 |
Covered Loans [Member] |  |  |  |  |  |
Financing Receivable, Nonaccrual | $ 230 | $ 230 |  | $ 230 | 297 |
Non-covered Loans [Member] |  |  |  |  |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing |  |  |  |  | $ 295 |
[1] | Derived from audited financial statements

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- Definition Deferred amounts on loans receivable related to loan modification programs offered to financial institution customers affected by COVID-19. + References No definition available. + Details
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