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Note 15 - Mortgage Banking Activities (Details Textual) $ in Thousands | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | ---
Loan, Managed and Securitized or Asset-Backed Financing Arrangement, Principal Outstanding | $ 1,840,000 | $ 1,930,000
Measurement Input, Discount Rate [Member] | Minimum [Member] |  |
Servicing Asset, Measurement Input | 0.10 | 0.10
Measurement Input, Discount Rate [Member] | Maximum [Member] |  |
Servicing Asset, Measurement Input | 0.13 | 0.13
Measurement Input, Prepayment Rate [Member] | Minimum [Member] |  |
Servicing Asset, Measurement Input | 0.064 | 0.06
Measurement Input, Prepayment Rate [Member] | Maximum [Member] |  |
Servicing Asset, Measurement Input | 0.112 | 0.111
Measurement Input, Default Rate [Member] |  |
Servicing Asset, Measurement Input | 0.006 | 0.006
Mortgage Servicing Rights [Member] |  |
Servicing Asset at Fair Value, Amount | $ 23,000 | $ 24,000
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance | $ 0 | $ 0

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- 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. + References Reference 1: 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 2: 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481260/860-50-45-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481260/860-50-45-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481260/860-50-45-2 + Details
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