Note 11 - Fair Value Measurement - Changes in Level 3 Assets (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Balance | $ 3,014 | |||||
| Balance | $ 2,776 | 2,776 | ||||
| Fair Value, Recurring [Member] | ||||||
| Balance | 3,014 | |||||
| Balance | 2,776 | 2,776 | ||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ||||||
| Balance | 3,012 | $ 3,220 | 3,014 | $ 3,281 | ||
| Servicing rights that result from transfers and sale of financial assets | 0 | (4) | 8 | 13 | ||
| Changes in fair value due to changes in model inputs or assumptions (1) | [1] | (236) | (123) | (246) | (201) | |
| Balance | 2,776 | 3,093 | 2,776 | 3,093 | ||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member] | ||||||
| Balance | 11,580 | 13,198 | 6,599 | 31,881 | ||
| Purchases | 0 | 0 | 5,000 | 0 | ||
| Principal payments and maturities | (2,350) | (3,944) | (2,350) | (22,717) | ||
| Unrealized Gains (Losses) | 4 | 50 | (15) | 140 | ||
| Balance | $ 9,234 | $ 9,304 | $ 9,234 | $ 9,304 | ||
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| X | ||||||||||
- Definition Amount of additions (disposals) to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. No definition available.
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| X | ||||||||||
- Definition Amount of change in fair value to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. No definition available.
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| X | ||||||||||
- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. 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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| X | ||||||||||
- Details
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