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Note 3 - INVESTMENT SECURITIES (Details) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 USD ($) item issuer state | Dec. 31, 2021 USD ($) state item
Number of securities | 699 |
Available-for-sale, unrealized loss positions, qualitative disclosure, number of positions | 463 |
Aggregate losses of securities (as a percent) | 6.74% |
Available-for-sale, unrealized loss positions, qualitative disclosure, number of positions, greater than or equal to one year | 91 |
Number Of Charters Owning Municipal Securities | 4 |
Revenue Bonds |  |
Number of issuers | issuer | 1 |
Percentage threshold | 5.00% |
Municipal securities | General Obligation Bonds |  |
Number of issuers | 119 | 113
Other investments | $ |  | $ 114.5
Number of states holding investments | state | 22 | 20
Municipal securities | General Obligation Bonds | Minimum |  |
Other investments | $ | $ 5.0 | $ 5.0
Municipal securities | General Obligation Bonds | Aggregate Fair Value Exceeding 5 Million [Member] |  |
Number of states holding investments | state | 8 | 7
Municipal securities | Revenue Bonds |  |
Number of issuers | 185 | 165
Other investments | $ | $ 583.5 | $ 575.0
Number of states holding investments | 29 | 28
Municipal securities | Revenue Bonds | Minimum |  |
Other investments | $ | $ 5.0 | $ 5.0
Municipal securities | Revenue Bonds | Aggregate Fair Value Exceeding 5 Million [Member] |  |
Number of states holding investments | 12 | 13

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