Note 11 - Fair Value Measurement - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Jun. 30, 2026 |
Dec. 31, 2025 |
Sep. 30, 2025 |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|---|---|---|---|
| Collateral dependent loans | $ 22,343 | $ 25,582 | ||||
| Other real estate owned | 1,101 | $ 1,568 | 1,380 | $ 1,377 | $ 1,297 | $ 0 |
| Fair Value, Nonrecurring [Member] | ||||||
| Collateral dependent loans | 22,343 | 25,582 | ||||
| Other real estate owned | 1,101 | 1,380 | ||||
| Fair Value, Inputs, Level 1 [Member] | Fair Value, Nonrecurring [Member] | ||||||
| Collateral dependent loans | 0 | 0 | ||||
| Other real estate owned | 0 | 0 | ||||
| Fair Value, Inputs, Level 2 [Member] | Fair Value, Nonrecurring [Member] | ||||||
| Collateral dependent loans | 0 | 0 | ||||
| Other real estate owned | 0 | 0 | ||||
| Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member] | ||||||
| Collateral dependent loans | 22,343 | 25,582 | ||||
| Other real estate owned | $ 1,101 | $ 1,380 |