Note 8 - Borrowed Funds (Details Textual) - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Securities Sold under Agreements to Repurchase | $ 0 | $ 0 |
| Advance from Federal Home Loan Bank | 0 | 0 |
| Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds | 7,050,000 | 7,890,000 |
| Debt Securities, Available-for-Sale, Excluding Accrued Interest | 1,682,820 | 1,658,223 |
| Junior Subordinated Notes, Noncurrent | $ 119,100 | $ 119,100 |
| Junior Subordinated Debt [Member] | ||
| Debt Instrument, Interest Rate, Effective Percentage | 6.21% | 6.76% |
| Debt Instrument, Term (Year) | 30 years | |
| Asset Not Pledged as Collateral [Member] | Federal Home Loan Bank Securities [Member] | ||
| Debt Securities, Available-for-Sale, Excluding Accrued Interest | $ 1,660 | $ 1,640 |
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- Definition Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Period between issuance and maturity of debt instrument, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. No definition available.
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- 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
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- Definition Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments, excluding current portion. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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