Note 3 - Investments (Tables)
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12 Months Ended |
Dec. 31, 2024 |
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| Notes Tables |
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| Investment [Table Text Block] |
| | | December 31, 2024 | |
| | | | | | | | | | | | | | | Estimated | | | | | |
| | | Amortized | | | Unrealized | | | Unrealized | | | Fair | | | | | |
| SECURITIES AVAILABLE-FOR-SALE | | Cost | | | Gains | | | Losses | | | Values | | | ACL | |
| U.S. agency securities | | $ | 20,247 | | | $ | 45 | | | $ | (3,154 | ) | | $ | 17,138 | | | $ | — | |
| Corporate securities | | | 16,000 | | | | 8 | | | | (882 | ) | | | 15,126 | | | | — | |
| Municipal bonds | | | 82,774 | | | | — | | | | (12,430 | ) | | | 70,344 | | | | — | |
| Mortgage-backed securities | | | 178,740 | | | | 415 | | | | (11,969 | ) | | | 167,186 | | | | — | |
| Asset-backed securities | | | 12,511 | | | | 3 | | | | (1,133 | ) | | | 11,381 | | | | — | |
| Total securities available-for-sale | | | 310,272 | | | | 471 | | | | (29,568 | ) | | | 281,175 | | | | — | |
| | | | | | | | | | | | | | | | | | | | | |
| SECURITIES HELD-TO-MATURITY | | | | | | | | | | | | | | | | | | | | |
| Corporate securities | | | 8,500 | | | | — | | | | (356 | ) | | | 8,144 | | | | 45 | |
| Total securities held-to-maturity | | | 8,500 | | | | — | | | | (356 | ) | | | 8,144 | | | | 45 | |
| | | | | | | | | | | | | | | | | | | | | |
| Total securities | | $ | 318,772 | | | $ | 471 | | | $ | (29,924 | ) | | $ | 289,319 | | | $ | 45 | |
| | | 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 | | | | — | |
| Asset-backed 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 | |
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| Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table Text Block] |
| SECURITIES HELD-TO-MATURITY | | For the Year Ended December 31, | |
| Corporate Securities | | 2024 | | | 2023 | | | 2022 | |
| Beginning ACL balance | | $ | 45 | | | $ | 31 | | | $ | — | |
| Impact of adopting ASU 2016-13 | | | — | | | | — | | | | 72 | |
| Provision for (recapture of) credit losses | | | — | | | | 14 | | | | (41 | ) |
| Total ending ACL balance | | $ | 45 | | | $ | 45 | | | $ | 31 | |
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| Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table Text Block] |
| | | December 31, | |
| Corporate securities | | 2024 | | | 2023 | |
| BBB/BBB- | | $ | 8,500 | | | $ | 7,000 | |
| BB+ | | | — | | | | 1,500 | |
| Total | | $ | 8,500 | | | $ | 8,500 | |
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| Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block] |
| | | December 31, 2024 | |
| Purpose or beneficiary | | Carrying Value | | | Amortized Cost | | | Fair Value | |
| State and local government public deposits | | $ | 34,384 | | | $ | 40,343 | | | $ | 34,384 | |
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| Gain (Loss) on Securities [Table Text Block] |
| | | December 31, 2024 | |
| | | Less than 12 Months | | | 12 Months or Longer | | | Total | |
| SECURITIES AVAILABLE-FOR-SALE | | Fair Value | | | Unrealized Losses | | | Fair Value | | | Unrealized Losses | | | Fair Value | | | Unrealized Losses | |
| U.S. agency securities | | $ | — | | | $ | — | | | $ | 15,093 | | | $ | (3,154 | ) | | $ | 15,093 | | | $ | (3,154 | ) |
| Corporate securities | | | 6,781 | | | | (219 | ) | | | 5,337 | | | | (663 | ) | | | 12,118 | | | | (882 | ) |
| Municipal bonds | | | 1,677 | | | | (10 | ) | | | 68,667 | | | | (12,420 | ) | | | 70,344 | | | | (12,430 | ) |
| Mortgage-backed securities | | | 31,093 | | | | (241 | ) | | | 63,934 | | | | (11,728 | ) | | | 95,027 | | | | (11,969 | ) |
| Asset-backed securities | | | 3,638 | | | | (41 | ) | | | 7,190 | | | | (1,092 | ) | | | 10,828 | | | | (1,133 | ) |
| Total securities available-for-sale | | | 43,189 | | | | (511 | ) | | | 160,221 | | | | (29,057 | ) | | | 203,410 | | | | (29,568 | ) |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| SECURITIES HELD-TO-MATURITY | | | | | | | | | | | | | | | | | | | | | | | | |
| Corporate securities | | | — | | | | — | | | | 8,144 | | | | (356 | ) | | | 8,144 | | | | (356 | ) |
| Total securities held-to-maturity | | | — | | | | — | | | | 8,144 | | | | (356 | ) | | | 8,144 | | | | (356 | ) |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| Total securities | | $ | 43,189 | | | $ | (511 | ) | | $ | 168,365 | | | $ | (29,413 | ) | | $ | 211,554 | | | $ | (29,924 | ) |
| | | December 31, 2023 | |
| | | Less than 12 Months | | | 12 Months or Longer | | | Total | |
| SECURITIES AVAILABLE-FOR-SALE | | Fair Value | | | Unrealized Losses | | | Fair Value | | | Unrealized Losses | | | Fair Value | | | Unrealized 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 | ) |
| Asset-backed 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 securities | | $ | 58,754 | | | $ | (637 | ) | | $ | 217,028 | | | $ | (36,898 | ) | | $ | 275,782 | | | $ | (37,535 | ) |
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| Investments Classified by Contractual Maturity Date [Table Text Block] |
| | | December 31, 2024 | | | December 31, 2023 | |
| 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 | | | 4,962 | | | | 4,575 | | | | 3,947 | | | | 3,544 | |
| Due after five years through ten years | | | 10,975 | | | | 9,193 | | | | 11,972 | | | | 10,139 | |
| Due after ten years | | | 4,310 | | | | 3,370 | | | | 4,310 | | | | 3,421 | |
| Subtotal | | | 20,247 | | | | 17,138 | | | | 21,151 | | | | 18,018 | |
| Corporate securities | | | | | | | | | | | | | | | | |
| Due within one year | | | — | | | | — | | | | 1,000 | | | | 1,004 | |
| Due after one year through five years | | | 11,000 | | | | 10,766 | | | | 6,000 | | | | 6,609 | |
| Due after five years through ten years | | | 3,000 | | | | 2,918 | | | | 4,000 | | | | 3,839 | |
| Due after ten years | | | 2,000 | | | | 1,442 | | | | 2,000 | | | | 1,420 | |
| Subtotal | | | 16,000 | | | | 15,126 | | | | 13,000 | | | | 12,872 | |
| Municipal bonds | | | | | | | | | | | | | | | | |
| Due within one year | | | — | | | | — | | | | 1,013 | | | | 1,003 | |
| Due after one year through five years | | | 2,186 | | | | 2,168 | | | | 757 | | | | 751 | |
| Due after five years through ten years | | | 4,158 | | | | 3,728 | | | | 7,603 | | | | 7,101 | |
| Due after ten years | | | 76,430 | | | | 64,448 | | | | 129,430 | | | | 110,592 | |
| Subtotal | | | 82,774 | | | | 70,344 | | | | 138,803 | | | | 119,447 | |
| Mortgage-backed securities | | | | | | | | | | | | | | | | |
| Federal National Mortgage Association (“FNMA”) | | | 90,771 | | | | 80,677 | | | | 76,369 | | | | 66,275 | |
| Federal Home Loan Mortgage Corporation (“FHLMC”) | | | 48,765 | | | | 47,773 | | | | 32,311 | | | | 31,376 | |
| Government National Mortgage Association (“GNMA”) | | | 39,204 | | | | 38,736 | | | | 4,175 | | | | 3,597 | |
| Subtotal | | | 178,740 | | | | 167,186 | | | | 112,855 | | | | 101,248 | |
| Asset-backed securities | | | | | | | | | | | | | | | | |
| Due within one year | | | 203 | | | | 200 | | | | 198 | | | | 196 | |
| Due after one year through five years | | | 1,073 | | | | 1,037 | | | | 1,860 | | | | 1,824 | |
| Due after five years through ten years | | | 2,867 | | | | 2,648 | | | | 21,420 | | | | 20,929 | |
| Due after ten years | | | 8,368 | | | | 7,496 | | | | 19,408 | | | | 18,399 | |
| Subtotal | | | 12,511 | | | | 11,381 | | | | 42,886 | | | | 41,348 | |
| Total securities available-for-sale | | | 310,272 | | | | 281,175 | | | | 328,695 | | | | 292,933 | |
| | | | | | | | | | | | | | | | | |
| SECURITIES HELD-TO-MATURITY | | | | | | | | | | | | | | | | |
| Corporate securities | | | | | | | | | | | | | | | | |
| Due after five years through ten years | | | 8,500 | | | | 8,144 | | | | 8,500 | | | | 7,666 | |
| Total securities held-to-maturity | | | 8,500 | | | | 8,144 | | | | 8,500 | | | | 7,666 | |
| Total securities | | $ | 318,772 | | | $ | 289,319 | | | $ | 337,195 | | | $ | 300,599 | |
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| Schedule of Realized Gain (Loss) [Table Text Block] |
| | | For the Year Ended | |
| | | December 31, 2024 | |
| | | | | | | Gross | | | Gross | |
| | | Proceeds | | | Gains | | | (Losses) | |
| Securities available-for-sale | | $ | 101,907 | | | $ | 215 | | | $ | (8,051 | ) |
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