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Note 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands | Mar. 31, 2022 USD ($) subsidiary | Dec. 31, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
--- | --- | --- | --- | ---
Retained earnings | $ 405,762 | $ 386,077 |  |
Less allowance | 74,786 | 78,721 | $ 81,831 | $ 84,376
Debt Securities, Held-to-maturity, Allowance for Credit Loss | $ 198 |  | 174 |
Number of subsidiaries commercial banks | subsidiary | 4 |  |  |
Accounting Standards Update 2016-13 |  |  |  |
Less allowance |  |  | (8,102) |
Debt Securities, Held-to-maturity, Allowance for Credit Loss |  |  | 183 |
Commercial Portfolio Segment [Member] |  |  |  |
Less allowance | $ 29,056 | $ 29,889 |  | $ 35,421
Commercial Portfolio Segment [Member] | Accounting Standards Update 2016-13 |  |  |  |
Less allowance |  |  | $ (35,421) |

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