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Note 15 - Mortgage Banking Activities (Details Textual) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022 | Mar. 07, 2022
--- | --- | --- | ---
Loan, Managed and Securitized or Asset-Backed Financing Arrangement, Principal Outstanding | $ 1,960,000 | $ 2,080,000 |
Commonwealth [Member] |  |  |
Loan, Managed and Securitized or Asset-Backed Financing Arrangement, Principal Outstanding |  |  | $ 1,480,000
Mortgage Servicing Rights [Member] |  |  |
Servicing Asset at Fair Value, Amount | 26,000 | 26,000 |
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance, Ending Balance | $ 0 | $ 0 |
Mortgage Servicing Rights [Member] | Commonwealth [Member] |  |  |
Servicing Asset at Fair Value, Amount |  |  | $ 13,000

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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 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 2: 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 3: 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 4: 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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- Definition Reflects the estimated amount of impairment as of the balance sheet date of recognized servicing assets that are being amortized in proportion to and over the period of estimated net servicing income or loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (e)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-4 + Details
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