Note 2 - Investment Securities (Details Textual) |
3 Months Ended | ||
|---|---|---|---|
|
Sep. 30, 2026
USD ($)
|
Sep. 30, 2025
USD ($)
|
Dec. 31, 2025
USD ($)
|
|
| Proceeds from Sale of Debt Securities, Available-for-Sale | $ 0 | $ 0 | |
| Debt Securities, Available-for-Sale, Excluding Accrued Interest | $ 272,824,000 | $ 281,692,000 | |
| Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions | 261 | 241 | |
| Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | $ 0 | $ 0 | |
| Asset Pledged as Collateral without Right [Member] | |||
| Debt Securities, Available-for-Sale, Excluding Accrued Interest | $ 18,769,000 | $ 19,976,000 | |
| X | ||||||||||
- Definition Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
|
| X | ||||||||||
- Definition Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|