Note 6 - Allowance for Credit Losses (Details Textual) |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
USD ($)
|
Dec. 31, 2023
USD ($)
|
|
| Financing Receivable, Reviewed for Loan Grade, Percentage of Dollar Volume | 50.00% | ||
| Financing Receivable, Reviewed for Loan Grade, Minimum Commitment | $ 1,000,000 | ||
| Financing Receivable, Reviewed for Loan Grade, Past Due Period (Day) | 90 days | ||
| Financing Receivable, Revolving, Converted to Term Loan | $ 0 | $ 0 | |
| Financing Receivable, Modified, Commitment to Lend | $ 0 | ||
| Financing Receivable, Modified in Period, Number of Loans | 0 | 0 | |
| Unfunded Loan Commitment [Member] | |||
| Off-Balance-Sheet, Credit Loss, Liability | $ 717,000 | $ 377,000 | $ 266,000 |
| Commercial, Agricultural and State and Political Relationships [Member] | |||
| Financing Receivable, Annually Reviewed for Loan Grade, Minimum Amount | $ 500,000 | ||