Note 7 - Available-for-Sale Securities (Details Textual) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
|
Jun. 30, 2025
USD ($)
AvailableForSaleSecurity
|
Jun. 30, 2024
USD ($)
|
Jun. 30, 2025
USD ($)
AvailableForSaleSecurity
|
Jun. 30, 2024
USD ($)
|
Dec. 31, 2024
USD ($)
|
|
| Investments, Debt and Equity Securities [Abstract] | |||||
| Credit allowance | $ 0 | $ 0 | $ 0 | ||
| Accrued interest receivable on available-for-sale securities | $ 200,000 | $ 200,000 | $ 200,000 | ||
| Available-for-sale securities, that were in a gross unrealized loss position for less than 12 months | AvailableForSaleSecurity | 71 | 71 | |||
| Available-for-sale securities, fair value | $ 98,700,000 | $ 98,700,000 | |||
| Available-for-sale securities, that were in a gross unrealized loss position for than 12 months or more | AvailableForSaleSecurity | 0 | 0 | |||
| Available-for sale securities, accrued interest writeoff | $ 0 | $ 0 | $ 0 | $ 0 | |
| Available-for-sale securities, realized gains or losses | $ 0 | $ 0 | $ 0 | $ 0 | |