Note 3 - Investment Securities Available for Sale (Tables)
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6 Months Ended |
Jun. 30, 2026 |
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| Notes Tables |
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| Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
| ($ in thousands) | | June 30, 2026 | |
| | | | | | | Gross | | | Gross | | | | | |
| | | Amortized | | | Unrealized | | | Unrealized | | | Fair | |
| Available-for-Sale | | | Cost | | | | Gains | | | | Losses | | | | Value | |
| Debt securities: | | | | | | | | | | | | | | | | |
| U.S. Government-sponsored agencies collateralized by mortgage obligations - residential | | $ | 242,548 | | | $ | 832 | | | $ | (8,415 | ) | | $ | 234,965 | |
| U.S. Government- sponsored agencies collateralized by mortgage obligations - commercial | | | 150,585 | | | | 624 | | | | (9,103 | ) | | | 142,106 | |
| Obligations of states and political subdivisions | | | 92,140 | | | | 1,200 | | | | (4,420 | ) | | | 88,920 | |
| | | $ | 485,273 | | | $ | 2,656 | | | $ | (21,938 | ) | | $ | 465,991 | |
| ($ in thousands) | | December 31, 2025 | |
| | | | | | | Gross | | | Gross | | | | | |
| | | Amortized | | | Unrealized | | | Unrealized | | | Fair | |
| Available-for-Sale | | Cost | | | Gains | | | Losses | | | Value | |
| Debt securities: | | | | | | | | | | | | | | | | |
| U.S. Government-sponsored agencies collateralized by mortgage obligations - residential | | $ | 257,520 | | | $ | 2,709 | | | $ | (7,064 | ) | | $ | 253,165 | |
| U.S. Government- sponsored agencies collateralized by mortgage obligations - commercial | | | 141,861 | | | | 1,245 | | | | (8,342 | ) | | | 134,764 | |
| Obligations of states and political subdivisions | | | 92,109 | | | | 1,038 | | | | (4,481 | ) | | | 88,666 | |
| | | $ | 491,490 | | | $ | 4,992 | | | $ | (19,887 | ) | | $ | 476,595 | |
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| Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
| ($ in thousands) | | Less than 12 Months | | | 12 Months or More | | | Total | |
| | | Fair | | | Unrealized | | | Fair | | | Unrealized | | | Fair | | | Unrealized | |
| June 30, 2026 | | Value | | | Losses | | | Value | | | Losses | | | Value | | | Losses | |
| Debt securities: | | | | | | | | | | | | | | | | | | | | | | | | |
| U.S. Government-sponsored agencies collateralized by mortgage obligations - residential | | $ | 94,638 | | | $ | 1,055 | | | $ | 53,742 | | | $ | 7,360 | | | $ | 148,380 | | | $ | 8,415 | |
| U.S. Government- sponsored agencies collateralized by mortgage obligations - commercial | | | 34,945 | | | | 345 | | | | 50,025 | | | | 8,758 | | | | 84,970 | | | | 9,103 | |
| Obligations of states and political subdivisions | | | 7,248 | | | | 56 | | | | 28,072 | | | | 4,364 | | | | 35,320 | | | | 4,420 | |
| | | $ | 136,831 | | | $ | 1,456 | | | $ | 131,839 | | | $ | 20,482 | | | $ | 268,670 | | | $ | 21,938 | |
| ($ in thousands) | | Less than 12 Months | | | 12 Months or More | | | Total | |
| | | Fair | | | Unrealized | | | Fair | | | Unrealized | | | Fair | | | Unrealized | |
| December 31, 2025 | | Value | | | Losses | | | Value | | | Losses | | | Value | | | Losses | |
| Debt securities: | | | | | | | | | | | | | | | | | | | | | | | | |
| U.S. Government-sponsored agencies collateralized by mortgage obligations - residential | | $ | 16,496 | | | $ | 109 | | | $ | 63,328 | | | $ | 6,955 | | | $ | 79,824 | | | $ | 7,064 | |
| U.S. Government- sponsored agencies collateralized by mortgage obligations - commercial | | | 6,941 | | | | 35 | | | | 51,781 | | | | 8,307 | | | | 58,722 | | | | 8,342 | |
| Obligations of states and political subdivisions | | | 2,783 | | | | 7 | | | | 35,480 | | | | 4,474 | | | | 38,263 | | | | 4,481 | |
| | | $ | 26,220 | | | $ | 151 | | | $ | 150,589 | | | $ | 19,736 | | | $ | 176,809 | | | $ | 19,887 | |
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| Investments Classified by Contractual Maturity Date [Table Text Block] |
| ($ in thousands) | | | Amortized Cost | | | | Estimated Fair Value | |
| Within one year | | $ | 935 | | | $ | 934 | |
| After one year through five years | | | 8,086 | | | | 8,145 | |
| After five years through ten years | | | 15,287 | | | | 15,370 | |
| After ten years | | | 67,832 | | | | 64,471 | |
| Investment securities not due at a single maturity date: | | | | | | | | |
| U.S. Government-sponsored agencies collateralized by mortgage obligations - residential | | | 242,548 | | | | 234,965 | |
| U.S. Government- sponsored agencies collateralized by mortgage obligations - commercial | | | 150,585 | | | | 142,106 | |
| | | $ | 485,273 | | | $ | 465,991 | |
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