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Note 2 - Securities - Contractual Maturities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Due within one year, amortized cost | $ 25,111 |
Due within one year, fair value | 25,310 |
Due after one year through five years, amortized cost | 49,146 |
Due after one year through five years, fair value | 50,979 |
Due after five years through ten years, amortized cost | 474,166 |
Due after five years through ten years, fair value | 480,614 |
Due after ten years, amortized cost | 112,340 |
Due after ten years, fair value | 108,867 |
Total debt securities, amortized cost | 660,763 |
Total debt securities, fair value | 665,770 |
Equity securities, amortized cost | 7,953 | $ 2,836
Equity securities, fair value | 8,492 | $ 2,896
Total, amortized cost | 1,110,099 |
Total, fair value | 1,107,377 |
Collateralized Mortgage Backed Securities [Member] |  |
Debt securities, amortized cost | 441,383 |
Debt securities, fair value | $ 433,115 |

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