Note 2 - Investment Securities (Details Textual) $ in Thousands |
Jun. 30, 2025
USD ($)
|
Dec. 31, 2024
USD ($)
|
|---|---|---|
| Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | $ 0 | |
| Securities held-to-maturity, carrying value | 207,980 | $ 370,171 |
| Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Nonaccrual | 0 | 0 |
| Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss | 4,000 | |
| Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss | $ 5,000 | |
| Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest | $ 0 | |
| Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions | 452 | 488 |
| Debt Securities, Available-for-Sale, Unrealized Loss Position, Percentage | 98.00% | 86.00% |
| Collateral Pledged [Member] | ||
| Debt Securities, Available-for-Sale, Restricted | $ 899,000 | $ 852,000 |
| Financial Asset, Past Due [Member] | ||
| Securities held-to-maturity, carrying value | $ 0 |
| X | ||||||||||
- Definition Percentage of portfolio of investment in debt security 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. No definition available.
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| X | ||||||||||
- Definition Amount, after allowance for credit loss, of accrued interest 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 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
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| X | ||||||||||
- Definition Amount of restricted 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
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| X | ||||||||||
- Definition Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount excluding accrued interest, of investment in debt security measured at amortized cost (held-to-maturity) on nonaccrual status. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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