Note 6 - Credit Quality Indicators - Purchased Loans (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2026 |
|
| Net purchase discount | $ (5,300) | |
| Allowance for credit losses of PCD loans | (3,995) | |
| Allowance for credit losses of PSLs | $ (160) | (15,495) |
| Middlefield Banc Corp [Member] | ||
| Par value of acquired loans at acquisition | 1,531,402 | |
| Net purchase discount | (21,229) | |
| Allowance for credit losses of PCD loans | (3,995) | |
| Allowance for credit losses of PSLs | (15,335) | |
| Purchase price of loans at acquisition | $ 1,490,843 |