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v3.23.2

Note 2 - Securities (Tables) | 6 Months Ended
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Jun. 30, 2023
Notes Tables |
Debt Securities, Available-for-Sale [Table Text Block] |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
June 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 454,164,000 |  |  | $ | 0 |  |  | $ | (61,070,000 | ) |  | $ | 393,094,000 |
Mortgage-backed securities |  |  | 36,374,000 |  |  |  | 10,000 |  |  |  | (5,864,000 | ) |  |  | 30,520,000 |
Municipal general obligation bonds |  |  | 165,793,000 |  |  |  | 511,000 |  |  |  | (8,739,000 | ) |  |  | 157,565,000 |
Municipal revenue bonds |  |  | 30,010,000 |  |  |  | 104,000 |  |  |  | (2,821,000 | ) |  |  | 27,293,000 |
Other investments |  |  | 500,000 |  |  |  | 0 |  |  |  | 0 |  |  |  | 500,000 |
|  | $ | 686,841,000 |  |  | $ | 625,000 |  |  | $ | (78,494,000 | ) |  | $ | 608,972,000 |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 453,836,000 |  |  | $ | 0 |  |  | $ | (65,092,000 | ) |  | $ | 388,744,000 |
Mortgage-backed securities |  |  | 38,002,000 |  |  |  | 19,000 |  |  |  | (6,068,000 | ) |  |  | 31,953,000 |
Municipal general obligation bonds |  |  | 163,041,000 |  |  |  | 450,000 |  |  |  | (9,058,000 | ) |  |  | 154,433,000 |
Municipal revenue bonds |  |  | 30,267,000 |  |  |  | 102,000 |  |  |  | (3,063,000 | ) |  |  | 27,306,000 |
Other investments |  |  | 500,000 |  |  |  | 0 |  |  |  | 0 |  |  |  | 500,000 |
|  | $ | 685,646,000 |  |  | $ | 571,000 |  |  | $ | (83,281,000 | ) |  | $ | 602,936,000 |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
|  | Less than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
June 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 2,862,000 |  |  | $ | 940,000 |  |  | $ | 390,232,000 |  |  | $ | 60,130,000 |  |  | $ | 393,094,000 |  |  | $ | 61,070,000 |
Mortgage-backed securities |  |  | 27,997,000 |  |  |  | 5,759,000 |  |  |  | 1,811,000 |  |  |  | 105,000 |  |  |  | 29,808,000 |  |  |  | 5,864,000 |
Municipal general obligation bonds |  |  | 39,970,000 |  |  |  | 1,476,000 |  |  |  | 92,626,000 |  |  |  | 7,263,000 |  |  |  | 132,596,000 |  |  |  | 8,739,000 |
Municipal revenue bonds |  |  | 7,262,000 |  |  |  | 810,000 |  |  |  | 15,628,000 |  |  |  | 2,011,000 |  |  |  | 22,890,000 |  |  |  | 2,821,000 |
|  | $ | 78,091,000 |  |  | $ | 8,985,000 |  |  | $ | 500,297,000 |  |  | $ | 69,509,000 |  |  | $ | 578,388,000 |  |  | $ | 78,494,000 |
|  | Less than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 53,019,000 |  |  | $ | 5,713,000 |  |  | $ | 335,725,000 |  |  | $ | 59,379,000 |  |  | $ | 388,744,000 |  |  | $ | 65,092,000 |
Mortgage-backed securities |  |  | 31,127,000 |  |  |  | 6,068,000 |  |  |  | 12,000 |  |  |  | 0 |  |  |  | 31,139,000 |  |  |  | 6,068,000 |
Municipal general obligation bonds |  |  | 97,252,000 |  |  |  | 4,516,000 |  |  |  | 32,870,000 |  |  |  | 4,542,000 |  |  |  | 130,122,000 |  |  |  | 9,058,000 |
Municipal revenue bonds |  |  | 12,532,000 |  |  |  | 1,141,000 |  |  |  | 10,609,000 |  |  |  | 1,922,000 |  |  |  | 23,141,000 |  |  |  | 3,063,000 |
|  | $ | 193,930,000 |  |  | $ | 17,438,000 |  |  | $ | 379,216,000 |  |  | $ | 65,843,000 |  |  | $ | 573,146,000 |  |  | $ | 83,281,000 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Weighted Average Yield |  |  | Amortized Cost |  |  | Fair Value |
Due in 2023 |  |  | 0.32% |  |  | $ | 12,635,000 |  |  | $ | 12,401,000 |
Due in 2024 through 2028 |  |  | 1.32 |  |  |  | 319,466,000 |  |  |  | 291,127,000 |
Due in 2029 through 2033 |  |  | 2.02 |  |  |  | 278,432,000 |  |  |  | 237,792,000 |
Due in 2034 and beyond |  |  | 3.64 |  |  |  | 39,434,000 |  |  |  | 36,632,000 |
Mortgage-backed securities |  |  | 2.15 |  |  |  | 36,374,000 |  |  |  | 30,520,000 |
Other investments |  |  | 8.50 |  |  |  | 500,000 |  |  |  | 500,000 |
Total available for sale securities |  |  | 1.77% |  |  | $ | 686,841,000 |  |  | $ | 608,972,000 |

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