Note 2 - Investment Securities (Tables)
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9 Months Ended |
Sep. 30, 2026 |
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| Notes Tables |
|
| Marketable Securities [Table Text Block] |
| | | September 30, 2026 | |
| | | | | | | Gross | | | Gross | | | | | | | | | |
| | | Amortized | | | Unrealized | | | Unrealized | | | | | | | Fair | |
| | | Cost | | | Gains | | | Losses | | | ACL | | | Value | |
| | | (In Thousands) | |
| Available-for-sale: | | | | | | | | | | | | | | | | | | | | |
| U.S. government and agency obligations | | $ | 3,793 | | | $ | 41 | | | $ | (172 | ) | | $ | - | | | $ | 3,662 | |
| U.S. treasury obligations | | | 47,695 | | | | - | | | | (4,223 | ) | | | - | | | | 43,472 | |
| Municipal obligations | | | 134,605 | | | | - | | | | (16,966 | ) | | | - | | | | 117,639 | |
| Corporate obligations | | | 1,000 | | | | - | | | | (17 | ) | | | - | | | | 983 | |
| Mortgage-backed securities | | | 25,287 | | | | 137 | | | | (1,485 | ) | | | - | | | | 23,939 | |
| Collateralized mortgage obligations | | | 82,546 | | | | 35 | | | | (5,591 | ) | | | - | | | | 76,990 | |
| Asset-backed securities | | | 6,065 | | | | 74 | | | | - | | | | - | | | | 6,139 | |
| Total | | $ | 300,991 | | | $ | 287 | | | $ | (28,454 | ) | | $ | - | | | $ | 272,824 | |
| | | December 31, 2025 | |
| | | | | | | Gross | | | Gross | | | | | | | | | |
| | | Amortized | | | Unrealized | | | Unrealized | | | | | | | Fair | |
| | | Cost | | | Gains | | | Losses | | | ACL | | | Value | |
| | | (In Thousands) | |
| Available-for-sale: | | | | | | | | | | | | | | | | | | | | |
| U.S. government and agency obligations | | $ | 4,179 | | | $ | 62 | | | $ | (86 | ) | | $ | - | | | $ | 4,155 | |
| U.S. treasury obligations | | | 47,665 | | | | - | | | | (3,357 | ) | | | - | | | | 44,308 | |
| Municipal obligations | | | 127,469 | | | | 53 | | | | (9,198 | ) | | | - | | | | 118,324 | |
| Corporate obligations | | | 2,000 | | | | - | | | | (29 | ) | | | - | | | | 1,971 | |
| Mortgage-backed securities | | | 27,222 | | | | 180 | | | | (908 | ) | | | - | | | | 26,494 | |
| Collateralized mortgage obligations | | | 83,907 | | | | 49 | | | | (4,295 | ) | | | - | | | | 79,661 | |
| Asset-backed securities | | | 6,720 | | | | 60 | | | | (1 | ) | | | - | | | | 6,779 | |
| Total | | $ | 299,162 | | | $ | 404 | | | $ | (17,874 | ) | | $ | - | | | $ | 281,692 | |
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| Investments Classified by Contractual Maturity Date [Table Text Block] |
| | | September 30, 2026 | |
| | | Amortized | | | Fair | |
| | | Cost | | | Value | |
| | | (In Thousands) | |
| Due in one year or less | | $ | 1,112 | | | $ | 1,103 | |
| Due from one to five years | | | 67,195 | | | | 61,337 | |
| Due from five to ten years | | | 54,013 | | | | 46,375 | |
| Due after ten years | | | 70,838 | | | | 63,080 | |
| | | | 193,158 | | | | 171,895 | |
| Mortgage-backed securities | | | 25,287 | | | | 23,939 | |
| Collateralized mortgage obligations | | | 82,546 | | | | 76,990 | |
| Total | | $ | 300,991 | | | $ | 272,824 | |
|
| Gain (Loss) on Securities [Table Text Block] |
| | | September 30, 2026 | |
| | | Less than 12 Months | | | 12 Months or Longer | |
| | | | | | | Gross | | | | | | | Gross | |
| | | Fair | | | Unrealized | | | Fair | | | Unrealized | |
| | | Value | | | Losses | | | Value | | | Losses | |
| | | (In Thousands) | |
| U.S. government and agency obligations | | $ | - | | | $ | - | | | $ | 1,756 | | | $ | (172 | ) |
| U.S. treasury obligations | | | - | | | | - | | | | 43,472 | | | | (4,223 | ) |
| Municipal obligations | | | 24,998 | | | | (2,222 | ) | | | 92,456 | | | | (14,744 | ) |
| Corporate obligations | | | 983 | | | | (17 | ) | | | - | | | | - | |
| Mortgage-backed securities and collateralized mortgage obligations | | | 20,047 | | | | (363 | ) | | | 66,575 | | | | (6,713 | ) |
| Asset-backed securities | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | 46,028 | | | $ | (2,602 | ) | | $ | 204,259 | | | $ | (25,852 | ) |
| | | December 31, 2025 | |
| | | Less than 12 months | | | 12 months or Longer | |
| | | | | | | Gross | | | | | | | Gross | |
| | | Fair | | | Unrealized | | | Fair | | | Unrealized | |
| | | Value | | | Losses | | | Value | | | Losses | |
| | | (In Thousands) | |
| U.S. government and agency obligations | | $ | - | | | $ | - | | | $ | 1,848 | | | $ | (86 | ) |
| U.S. treasury obligations | | | - | | | | - | | | | 44,308 | | | | (3,357 | ) |
| Municipal obligations | | | 4,250 | | | | (101 | ) | | | 107,365 | | | | (9,097 | ) |
| Corporate obligations | | | - | | | | - | | | | 1,971 | | | | (29 | ) |
| Mortgage-backed securities and collateralized mortgage obligations | | | 5,961 | | | | (42 | ) | | | 73,924 | | | | (5,161 | ) |
| Asset-backed securities | | | - | | | | - | | | | 164 | | | | (1 | ) |
| Total | | $ | 10,211 | | | $ | (143 | ) | | $ | 229,580 | | | $ | (17,731 | ) |
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