Note 3 - Loans Receivable - Allowance for Loan Losses Activity (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
|
| Balances | $ 17,370 | ||||
| Balances | $ 19,490 | 19,490 | $ 17,370 | ||
| Residential Portfolio Segment [Member] | |||||
| Balances | 1,758 | $ 2,005 | 1,965 | $ 1,911 | 1,911 |
| Charge-offs | 0 | 0 | 0 | 0 | |
| Recoveries | 0 | 0 | 0 | 0 | |
| Provision | 132 | 10 | (75) | 104 | |
| Balances | 1,890 | 2,015 | 1,890 | 2,015 | 1,965 |
| Commercial Real Estate Portfolio Segment [Member] | |||||
| Balances | 11,620 | 11,422 | 11,295 | 10,907 | 10,907 |
| Charge-offs | 0 | (33) | 0 | (33) | |
| Recoveries | 5 | 4 | 14 | 9 | |
| Provision | 1,213 | 41 | 1,529 | 551 | |
| Balances | 12,838 | 11,434 | 12,838 | 11,434 | 11,295 |
| Home Equity Portfolio Segment [Member] | |||||
| Balances | 563 | 539 | 547 | 553 | 553 |
| Charge-offs | 0 | 0 | 0 | (27) | (27) |
| Recoveries | 0 | 0 | 0 | 0 | |
| Provision | 16 | 1 | 32 | 14 | |
| Balances | 579 | 540 | 579 | 540 | 547 |
| Consumer Portfolio Segment [Member] | |||||
| Balances | 195 | 222 | 84 | 245 | 245 |
| Charge-offs | (37) | (41) | (175) | (71) | (175) |
| Recoveries | 1 | 3 | 2 | 4 | |
| Provision | 8 | 1 | 256 | 7 | |
| Balances | 167 | 185 | 167 | 185 | 84 |
| Commercial Portfolio Segment [Member] | |||||
| Balances | 3,504 | 3,542 | 3,479 | 3,234 | 3,234 |
| Charge-offs | 0 | (6) | (117) | (6) | |
| Recoveries | 2 | 1 | 5 | 2 | |
| Provision | 510 | 29 | 649 | 336 | |
| Balances | 4,016 | 3,566 | 4,016 | 3,566 | 3,479 |
| Loans Excluding Unfunded Commitments [Member] | |||||
| Balances | 17,640 | 17,730 | 17,370 | 16,850 | 16,850 |
| Charge-offs | (37) | (80) | (292) | (137) | |
| Recoveries | 8 | 8 | 21 | 15 | |
| Provision | 1,879 | 82 | 2,391 | 1,012 | |
| Balances | $ 19,490 | $ 17,740 | $ 19,490 | $ 17,740 | $ 17,370 |