Note 8 - Deposits and Borrowed Funds (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
|
| Demand Deposit Overdrafts | $ 612,000 | $ 612,000 | $ 591,000 | ||
| Interest Expense, Time Deposits, $100,000 or More | 14,000 | $ 20,000 | 31,000 | $ 41,000 | |
| Short-term Line of Credit | 0 | 0 | |||
| Federal Reserve [Member] | |||||
| Line of Credit Facility, Maximum Borrowing Capacity | 703,398,000 | 703,398,000 | |||
| Short-term Line of Credit | 0 | 0 | |||
| Federal Reserve [Member] | Assets Available to be Pledged as Collateral [Member] | |||||
| Debt Securities, Available-for-Sale and Held-to-Maturity, after Allowance for Credit Loss | 1,683,788 | 1,683,788 | |||
| Corresponding Banks [Member] | |||||
| Line of Credit Facility, Maximum Borrowing Capacity | $ 60,000,000 | $ 60,000,000 | |||