Note 4 - Mortgage Servicing Rights (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Loans Serviced During the Period | $ 1,966,813,000 | $ 1,976,243,000 | |||
| Fees and Commissions, Mortgage Banking and Servicing | $ 1,227,000 | $ 1,255,000 | 2,461,000 | $ 2,511,000 | |
| Escrow Deposit | 19,115,000 | 19,115,000 | 15,598,000 | ||
| Mortgage Servicing Rights Measured at Fair Value | $ 19,815,000 | $ 19,815,000 | $ 20,302,000 | ||