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v3.25.2

Note 2 - Securities (Tables) | 6 Months Ended
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Jun. 30, 2025
Notes Tables |
Debt Securities, Available-for-Sale [Table Text Block] |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(Dollars in thousands) |  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
June 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 618,717 |  |  | $ | 2,273 |  |  | $ | (33,319 | ) |  | $ | 587,671 |
Mortgage-backed securities |  |  | 29,893 |  |  |  | 10 |  |  |  | (5,523 | ) |  |  | 24,380 |
Municipal general obligation bonds |  |  | 188,931 |  |  |  | 548 |  |  |  | (7,361 | ) |  |  | 182,118 |
Municipal revenue bonds |  |  | 33,646 |  |  |  | 129 |  |  |  | (2,029 | ) |  |  | 31,746 |
Other investments |  |  | 500 |  |  |  | 0 |  |  |  | 0 |  |  |  | 500 |
|  | $ | 871,687 |  |  | $ | 2,960 |  |  | $ | (48,232 | ) |  | $ | 826,415 |
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 542,676 |  |  | $ | 131 |  |  | $ | (47,226 | ) |  | $ | 495,581 |
Mortgage-backed securities |  |  | 31,696 |  |  |  | 4 |  |  |  | (6,332 | ) |  |  | 25,368 |
Municipal general obligation bonds |  |  | 187,484 |  |  |  | 513 |  |  |  | (7,827 | ) |  |  | 180,170 |
Municipal revenue bonds |  |  | 31,066 |  |  |  | 89 |  |  |  | (2,422 | ) |  |  | 28,733 |
Other investments |  |  | 500 |  |  |  | 0 |  |  |  | 0 |  |  |  | 500 |
|  | $ | 793,422 |  |  | $ | 737 |  |  | $ | (63,807 | ) |  | $ | 730,352 |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
|  | Less than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
(Dollars in thousands) |  | Value |  |  | Loss |  |  | Value |  |  | Loss |  |  | Value |  |  | Loss |
June 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 49,087 |  |  | $ | 454 |  |  | $ | 359,282 |  |  | $ | 32,865 |  |  | $ | 408,369 |  |  | $ | 33,319 |
Mortgage-backed securities |  |  | 0 |  |  |  | 0 |  |  |  | 23,848 |  |  |  | 5,523 |  |  |  | 23,848 |  |  |  | 5,523 |
Municipal general obligation bonds |  |  | 38,247 |  |  |  | 1,449 |  |  |  | 108,089 |  |  |  | 5,912 |  |  |  | 146,336 |  |  |  | 7,361 |
Municipal revenue bonds |  |  | 2,985 |  |  |  | 41 |  |  |  | 22,586 |  |  |  | 1,988 |  |  |  | 25,571 |  |  |  | 2,029 |
Other investments |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 0 |
|  | $ | 90,319 |  |  | $ | 1,944 |  |  | $ | 513,805 |  |  | $ | 46,288 |  |  | $ | 604,124 |  |  | $ | 48,232 |
|  | Less than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
(Dollars in thousands) |  | Value |  |  | Loss |  |  | Value |  |  | Loss |  |  | Value |  |  | Loss |
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 113,942 |  |  | $ | 2,379 |  |  | $ | 361,171 |  |  | $ | 44,847 |  |  | $ | 475,113 |  |  | $ | 47,226 |
Mortgage-backed securities |  |  | 194 |  |  |  | 1 |  |  |  | 24,865 |  |  |  | 6,331 |  |  |  | 25,059 |  |  |  | 6,332 |
Municipal general obligation bonds |  |  | 63,387 |  |  |  | 1,117 |  |  |  | 92,153 |  |  |  | 6,710 |  |  |  | 155,540 |  |  |  | 7,827 |
Municipal revenue bonds |  |  | 2,840 |  |  |  | 28 |  |  |  | 21,865 |  |  |  | 2,394 |  |  |  | 24,705 |  |  |  | 2,422 |
Other investments |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 0 |
|  | $ | 180,363 |  |  | $ | 3,525 |  |  | $ | 500,054 |  |  | $ | 60,282 |  |  | $ | 680,417 |  |  | $ | 63,807 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Amortized |  |  | Fair |
(Dollars in thousands) |  | Cost |  |  | Value |
Due in 2025 |  | $ | 33,462 |  |  | $ | 33,137 |
Due in 2026 through 2030 |  |  | 480,202 |  |  |  | 460,372 |
Due in 2031 through 2035 |  |  | 277,229 |  |  |  | 259,053 |
Due in 2036 and beyond |  |  | 50,401 |  |  |  | 48,973 |
Mortgage-backed securities |  |  | 29,893 |  |  |  | 24,380 |
Other investments |  |  | 500 |  |  |  | 500 |
Total available for sale securities |  | $ | 871,687 |  |  | $ | 826,415 |

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