Note 5 - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Accumulated Other Comprehensive Loss [Line Items] | ||
| Tax effect | $ 12,901 | $ 12,747 |
| Accumulated other comprehensive loss, net of tax | (47,032) | (46,470) |
| Unrealized Net Holding Losses on Available-for-sale Securities [Member] | ||
| Accumulated Other Comprehensive Loss [Line Items] | ||
| Accumulated other comprehensive loss | $ (59,933) | $ (59,217) |
| X | ||||||||||
- Definition Accumulated other comprehensive income loss tax. No definition available.
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| X | ||||||||||
- Definition Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, including portion attributable to noncontrolling interest. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners). No definition available.
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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