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Note 9 - Fair Value Measurements - Schedule of Financial Assets on a Non-recurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Collateral Dependent Loans [Member] |  |
Collateral dependent loans | $ 9,349 | $ 1,130
Mortgage Servicing Rights [Member] |  |
Collateral dependent loans | 21,691 | 21,043
Fair Value, Inputs, Level 1 [Member] | Collateral Dependent Loans [Member] |  |
Collateral dependent loans | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Mortgage Servicing Rights [Member] |  |
Collateral dependent loans | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Collateral Dependent Loans [Member] |  |
Collateral dependent loans | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Mortgage Servicing Rights [Member] |  |
Collateral dependent loans | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Collateral Dependent Loans [Member] |  |
Collateral dependent loans | 9,349 | 1,130
Fair Value, Inputs, Level 3 [Member] | Mortgage Servicing Rights [Member] |  |
Collateral dependent loans | $ 21,691 | $ 21,043

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- Definition Fair value portion of asset recognized for present right to economic benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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