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Note 2 - Investments - Schedule of Contractual Maturities (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Available-for-Sale, Amortized Cost | $ 335,152 | $ 310,272
Total securities available-for-sale, fair value | 311,695 | 281,175
Total securities held-to-maturity, amortized cost | 31,606 | 8,500
Total securities held-to-maturity, fair value | 32,142 | 8,144
Total securities, amortized cost | 366,758 | 318,772
Total securities, fair value | 343,837 | 289,319
US Government Agencies Debt Securities [Member] |  |
Due after one year through five years, amortized cost | 4,972 | 4,962
Due after one year through five years, fair value | 4,762 | 4,575
Due after five years through ten years, amortized cost | 15,288 | 10,975
Due after five years through ten years, fair value | 13,226 | 9,193
Due after ten years, amortized cost | 0 | 4,310
Due after ten years, fair value | 0 | 3,370
Subtotal, amortized cost | 20,260 | 20,247
Subtotal, fair value | 17,988 | 17,138
Available-for-Sale, Amortized Cost | 20,260 | 20,247
Total securities available-for-sale, fair value | 17,988 | 17,138
Corporate Debt Securities [Member] |  |
Due after one year through five years, amortized cost | 14,000 | 11,000
Due after one year through five years, fair value | 13,934 | 10,766
Due after five years through ten years, amortized cost | 2,000 | 3,000
Due after five years through ten years, fair value | 1,517 | 2,918
Due after ten years, amortized cost | 0 | 2,000
Due after ten years, fair value | 0 | 1,442
Subtotal, amortized cost | 16,000 | 16,000
Subtotal, fair value | 15,451 | 15,126
Available-for-Sale, Amortized Cost | 16,000 | 16,000
Total securities available-for-sale, fair value | 15,451 | 15,126
Due after one year through five years, amortized cost, held to maturity | 3,500 | 0
Due after one year through five years, fair value, held to maturity | 3,488 | 0
Due after five years through ten years, amortized cost, held to maturity | 25,836 | 8,500
Due after five years through ten years, fair value, held to maturity | 26,170 | 8,144
Total securities held-to-maturity, amortized cost | 29,336 | 8,500
Total securities held-to-maturity, fair value | 29,658 | 8,144
Municipal Bonds [Member] |  |
Due after one year through five years, amortized cost | 2,147 | 2,186
Due after one year through five years, fair value | 2,150 | 2,168
Due after five years through ten years, amortized cost | 4,121 | 4,158
Due after five years through ten years, fair value | 3,785 | 3,728
Due after ten years, amortized cost | 75,657 | 76,430
Due after ten years, fair value | 64,770 | 64,448
Subtotal, amortized cost | 81,925 | 82,774
Subtotal, fair value | 70,705 | 70,344
Available-for-Sale, Amortized Cost | 81,925 | 82,774
Total securities available-for-sale, fair value | 70,705 | 70,344
Due after five years through ten years, amortized cost, held to maturity | 2,270 | 0
Due after five years through ten years, fair value, held to maturity | 2,484 | 0
Total securities held-to-maturity, amortized cost | 2,270 | 0
Total securities held-to-maturity, fair value | 2,484 | 0
Collateralized Mortgage-Backed Securities [Member] |  |
Without single maturity date, amortized cost | 205,937 | 178,740
Without single maturity date, fair value | 197,222 | 167,186
Available-for-Sale, Amortized Cost | 205,937 | 178,740
Total securities available-for-sale, fair value | 197,222 | 167,186
Collateralized Mortgage-Backed Securities [Member] | Federal National Mortgage Association (FNMA) [Member] |  |
Without single maturity date, amortized cost | 86,824 | 90,771
Without single maturity date, fair value | 79,479 | 80,677
Collateralized Mortgage-Backed Securities [Member] | Federal Home Loan Mortgage Corporation (FHLMC) [Member] |  |
Without single maturity date, amortized cost | 46,537 | 48,765
Without single maturity date, fair value | 45,823 | 47,773
Collateralized Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA) [Member] |  |
Without single maturity date, amortized cost | 72,576 | 39,204
Without single maturity date, fair value | 71,920 | 38,736
Asset-Backed Securities [Member] |  |
Due after one year through five years, amortized cost | 744 | 1,073
Due after one year through five years, fair value | 728 | 1,037
Due after five years through ten years, amortized cost | 2,599 | 2,867
Due after five years through ten years, fair value | 2,446 | 2,648
Due after ten years, amortized cost | 7,557 | 8,368
Due after ten years, fair value | 7,026 | 7,496
Subtotal, amortized cost | 11,030 | 12,511
Subtotal, fair value | 10,329 | 11,381
Due within one year, amortized cost | 130 | 203
Due within one year, fair value | 129 | 200
Available-for-Sale, Amortized Cost | 11,030 | 12,511
Total securities available-for-sale, fair value | $ 10,329 | $ 11,381

X
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