Note 8 - Commitments, Off-balance Sheet Arrangements, and Contingent Liabilities - Financial Instruments (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|---|---|---|---|
| Commitments To Extend Credit Under Amortizing Loans [Member] | ||||||||
| Off-balance sheet risks liability amount | [1] | $ 57,563 | $ 12,736 | |||||
| Commitments To Extend Credit Under Home Equity Lines Of Credit [Member] | ||||||||
| Off-balance sheet risks liability amount | [2] | 11,883 | 10,520 | |||||
| Unused Portion of Construction Loans [Member] | ||||||||
| Off-balance sheet risks liability amount | [3] | 29,610 | 44,578 | |||||
| Unused lines of Credit [Member] | ||||||||
| Off-balance sheet risks liability amount | 11,405 | 13,966 | ||||||
| Standby Letters of Credit [Member] | ||||||||
| Off-balance sheet risks liability amount | $ 1,277 | $ 1,827 | ||||||
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