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Note 3 - Investments (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Investment [Table Text Block] |
|  | December 31, 2023 |
|  |  |  |  |  |  |  |  |  |  |  |  |  | Estimated |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |  |  |  |  |
SECURITIES AVAILABLE-FOR-SALE |  | Cost |  |  | Gains |  |  | Losses |  |  | Values |  |  | ACL |
U.S. agency securities |  | $ | 21,151 |  |  | $ | 46 |  |  | $ | (3,179 | ) |  | $ | 18,018 |  |  | $ | — |
Corporate securities |  |  | 13,000 |  |  |  | 613 |  |  |  | (741 | ) |  |  | 12,872 |  |  |  | — |
Municipal bonds |  |  | 138,803 |  |  |  | 42 |  |  |  | (19,398 | ) |  |  | 119,447 |  |  |  | — |
Mortgage-backed securities |  |  | 112,855 |  |  |  | 238 |  |  |  | (11,845 | ) |  |  | 101,248 |  |  |  | — |
U.S. Small Business Administration securities |  |  | 42,886 |  |  |  | — |  |  |  | (1,538 | ) |  |  | 41,348 |  |  |  | — |
Total securities available-for-sale |  |  | 328,695 |  |  |  | 939 |  |  |  | (36,701 | ) |  |  | 292,933 |  |  |  | — |
SECURITIES HELD-TO-MATURITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate securities |  |  | 8,500 |  |  |  | — |  |  |  | (834 | ) |  |  | 7,666 |  |  |  | 45 |
Total securities held-to-maturity |  |  | 8,500 |  |  |  | — |  |  |  | (834 | ) |  |  | 7,666 |  |  |  | 45 |
Total securities |  | $ | 337,195 |  |  | $ | 939 |  |  | $ | (37,535 | ) |  | $ | 300,599 |  |  | $ | 45 |
|  | December 31, 2022 |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  |  |  |  | Estimated |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |  |  |  |  |
SECURITIES AVAILABLE-FOR-SALE |  | Cost |  |  | Gains |  |  | Losses |  |  | Values |  |  | ACL |
U.S. agency securities |  | $ | 21,153 |  |  | $ | — |  |  | $ | (3,865 | ) |  | $ | 17,288 |  |  | $ | — |
Corporate securities |  |  | 9,497 |  |  |  | 27 |  |  |  | (979 | ) |  |  | 8,545 |  |  |  | — |
Municipal bonds |  |  | 144,200 |  |  |  | 21 |  |  |  | (23,619 | ) |  |  | 120,602 |  |  |  | — |
Mortgage-backed securities |  |  | 82,424 |  |  |  | — |  |  |  | (12,458 | ) |  |  | 69,966 |  |  |  | — |
U.S. Small Business Administration securities |  |  | 14,519 |  |  |  | — |  |  |  | (1,668 | ) |  |  | 12,851 |  |  |  | — |
Total securities available-for-sale |  |  | 271,793 |  |  |  | 48 |  |  |  | (42,589 | ) |  |  | 229,252 |  |  |  | — |
SECURITIES HELD-TO-MATURITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate securities |  |  | 8,500 |  |  |  | — |  |  |  | (571 | ) |  |  | 7,929 |  |  |  | 31 |
Total securities held-to-maturity |  |  | 8,500 |  |  |  | — |  |  |  | (571 | ) |  |  | 7,929 |  |  |  | 31 |
Total securities |  | $ | 280,293 |  |  | $ | 48 |  |  | $ | (43,160 | ) |  | $ | 237,181 |  |  | $ | 31 |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table Text Block] |
SECURITIES HELD-TO-MATURITY |  | For the Year Ended |
Corporate Securities |  | December 31, 2023 |  |  | December 31, 2022 |
Beginning ACL balance |  | $ | 31 |  |  | $ | — |
Impact of adopting ASU 2016-13 |  |  | — |  |  |  | 72 |
Provision for (recapture of) credit losses |  |  | 14 |  |  |  | (41 | )
Securities charged-off |  |  | — |  |  |  | — |
Recoveries |  |  | — |  |  |  | — |
Total ending ACL balance |  | $ | 45 |  |  | $ | 31 |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table Text Block] |
|  | December 31, |
Corporate securities |  | 2023 |  |  | 2022 |
BBB/BBB- |  | $ | 7,000 |  |  | $ | 8,500 |
BB+ |  |  | 1,500 |  |  |  | — |
Total |  | $ | 8,500 |  |  | $ | 8,500 |
Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block] |
|  | December 31, 2023 |
Purpose or beneficiary |  | Carrying Value |  |  | Amortized Cost |  |  | Fair Value |
State and local government public deposits |  | $ | 39,704 |  |  | $ | 45,689 |  |  | $ | 39,704 |
FRB - Bank Term Funding Program facility ("BTFP") |  |  | 77,043 |  |  |  | 90,195 |  |  |  | 77,043 |
Total pledged securities |  | $ | 116,747 |  |  | $ | 135,884 |  |  | $ | 116,747 |
Gain (Loss) on Securities [Table Text Block] |
|  | December 31, 2023 |
|  | Less than 12 Months |  |  | 12 Months or Longer |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
SECURITIES AVAILABLE-FOR-SALE |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
U.S. agency securities |  | $ | — |  |  | $ | — |  |  | $ | 15,972 |  |  | $ | (3,179 | ) |  | $ | 15,972 |  |  | $ | (3,179 | )
Corporate securities |  |  | 959 |  |  |  | (41 | ) |  |  | 4,300 |  |  |  | (700 | ) |  |  | 5,259 |  |  |  | (741 | )
Municipal bonds |  |  | 3,922 |  |  |  | (23 | ) |  |  | 113,577 |  |  |  | (19,375 | ) |  |  | 117,499 |  |  |  | (19,398 | )
Mortgage-backed securities |  |  | 20,662 |  |  |  | (113 | ) |  |  | 67,376 |  |  |  | (11,732 | ) |  |  | 88,038 |  |  |  | (11,845 | )
U.S. Small Business Administration securities |  |  | 33,211 |  |  |  | (460 | ) |  |  | 8,137 |  |  |  | (1,078 | ) |  |  | 41,348 |  |  |  | (1,538 | )
Total securities available-for-sale |  | $ | 58,754 |  |  | $ | (637 | ) |  | $ | 209,362 |  |  | $ | (36,064 | ) |  | $ | 268,116 |  |  | $ | (36,701 | )
SECURITIES HELD-TO-MATURITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate securities |  |  | — |  |  |  | — |  |  |  | 7,666 |  |  |  | (834 | ) |  |  | 7,666 |  |  |  | (834 | )
Total securities held-to-maturity |  |  | — |  |  |  | — |  |  |  | 7,666 |  |  |  | (834 | ) |  |  | 7,666 |  |  |  | (834 | )
Total |  | $ | 58,754 |  |  | $ | (637 | ) |  | $ | 217,028 |  |  | $ | (36,898 | ) |  | $ | 275,782 |  |  | $ | (37,535 | )
|  | December 31, 2022 |
|  | Less than 12 Months |  |  | 12 Months or Longer |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
SECURITIES AVAILABLE-FOR-SALE |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
U.S. agency securities |  | $ | 3,823 |  |  | $ | (118 | ) |  | $ | 13,465 |  |  | $ | (3,747 | ) |  | $ | 17,288 |  |  | $ | (3,865 | )
Corporate securities |  |  | 2,494 |  |  |  | (4 | ) |  |  | 4,026 |  |  |  | (975 | ) |  |  | 6,520 |  |  |  | (979 | )
Municipal bonds |  |  | 44,261 |  |  |  | (5,794 | ) |  |  | 73,990 |  |  |  | (17,825 | ) |  |  | 118,251 |  |  |  | (23,619 | )
Mortgage-backed securities |  |  | 29,791 |  |  |  | (3,188 | ) |  |  | 40,175 |  |  |  | (9,270 | ) |  |  | 69,966 |  |  |  | (12,458 | )
U.S. Small Business Administration securities |  |  | 10,807 |  |  |  | (1,162 | ) |  |  | 2,044 |  |  |  | (506 | ) |  |  | 12,851 |  |  |  | (1,668 | )
Total securities available-for-sale |  | $ | 91,176 |  |  | $ | (10,266 | ) |  | $ | 133,700 |  |  | $ | (32,323 | ) |  | $ | 224,876 |  |  | $ | (42,589 | )
SECURITIES HELD-TO-MATURITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate securities |  |  | 7,929 |  |  |  | (571 | ) |  |  | — |  |  |  | — |  |  |  | 7,929 |  |  |  | (571 | )
Total securities held-to-maturity |  |  | 7,929 |  |  |  | (571 | ) |  |  | — |  |  |  | — |  |  |  | 7,929 |  |  |  | (571 | )
Total |  | $ | 99,105 |  |  | $ | (10,837 | ) |  | $ | 133,700 |  |  | $ | (32,323 | ) |  | $ | 232,805 |  |  | $ | (43,160 | )
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | December 31, |
|  | 2023 |  |  | 2022 |
SECURITIES AVAILABLE-FOR-SALE |  | Amortized |  |  | Fair |  |  | Amortized |  |  | Fair |
U.S. agency securities |  | Cost |  |  | Value |  |  | Cost |  |  | Value |
Due within one year |  | $ | 922 |  |  | $ | 914 |  |  | $ | — |  |  | $ | — |
Due after one year through five years |  |  | 3,947 |  |  |  | 3,544 |  |  |  | 4,874 |  |  |  | 4,321 |
Due after five years through ten years |  |  | 11,972 |  |  |  | 10,139 |  |  |  | 6,989 |  |  |  | 5,963 |
Due after ten years |  |  | 4,310 |  |  |  | 3,421 |  |  |  | 9,290 |  |  |  | 7,004 |
Subtotal |  |  | 21,151 |  |  |  | 18,018 |  |  |  | 21,153 |  |  |  | 17,288 |
Corporate securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due within one year |  |  | 1,000 |  |  |  | 1,004 |  |  |  | 1,000 |  |  |  | 997 |
Due after one year through five years |  |  | 6,000 |  |  |  | 6,609 |  |  |  | 2,497 |  |  |  | 2,519 |
Due after five years through ten years |  |  | 4,000 |  |  |  | 3,839 |  |  |  | 4,000 |  |  |  | 3,763 |
Due after ten years |  |  | 2,000 |  |  |  | 1,420 |  |  |  | 2,000 |  |  |  | 1,266 |
Subtotal |  |  | 13,000 |  |  |  | 12,872 |  |  |  | 9,497 |  |  |  | 8,545 |
Municipal bonds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due within one year |  |  | 1,013 |  |  |  | 1,003 |  |  |  | 2,660 |  |  |  | 2,644 |
Due after one year through five years |  |  | 757 |  |  |  | 751 |  |  |  | 1,038 |  |  |  | 1,012 |
Due after five years through ten years |  |  | 7,603 |  |  |  | 7,101 |  |  |  | 6,341 |  |  |  | 5,771 |
Due after ten years |  |  | 129,430 |  |  |  | 110,592 |  |  |  | 134,161 |  |  |  | 111,175 |
Subtotal |  |  | 138,803 |  |  |  | 119,447 |  |  |  | 144,200 |  |  |  | 120,602 |
Mortgage-backed securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal National Mortgage Association (“FNMA”) |  |  | 76,369 |  |  |  | 66,275 |  |  |  | 68,421 |  |  |  | 57,358 |
Federal Home Loan Mortgage Corporation (“FHLMC”) |  |  | 32,311 |  |  |  | 31,376 |  |  |  | 9,290 |  |  |  | 8,424 |
Government National Mortgage Association (“GNMA”) |  |  | 4,175 |  |  |  | 3,597 |  |  |  | 4,713 |  |  |  | 4,184 |
Subtotal |  |  | 112,855 |  |  |  | 101,248 |  |  |  | 82,424 |  |  |  | 69,966 |
U.S. Small Business Administration securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due within one year |  |  | 198 |  |  |  | 196 |  |  |  | — |  |  |  | — |
Due after one year through five years |  |  | 1,860 |  |  |  | 1,824 |  |  |  | 2,553 |  |  |  | 2,407 |
Due after five years through ten years |  |  | 21,420 |  |  |  | 20,929 |  |  |  | 4,461 |  |  |  | 3,996 |
Due after ten years |  |  | 19,408 |  |  |  | 18,399 |  |  |  | 7,505 |  |  |  | 6,448 |
Subtotal |  |  | 42,886 |  |  |  | 41,348 |  |  |  | 14,519 |  |  |  | 12,851 |
Total securities available-for-sale |  |  | 328,695 |  |  |  | 292,933 |  |  |  | 271,793 |  |  |  | 229,252 |
SECURITIES HELD-TO-MATURITY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due after five years through ten years |  |  | 8,500 |  |  |  | 7,666 |  |  |  | 8,500 |  |  |  | 7,929 |
Total securities held-to-maturity |  |  | 8,500 |  |  |  | 7,666 |  |  |  | 8,500 |  |  |  | 7,929 |
Total securities |  | $ | 337,195 |  |  | $ | 300,599 |  |  | $ | 280,293 |  |  | $ | 237,181 |

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