Note 15 - Mortgage Banking Activities (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Mar. 07, 2022
Loan, Managed and Securitized or Asset-Backed Financing Arrangement, Principal Outstanding	$ 2,000,000	$ 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

This is the sum of principal amount outstanding for both securitized and unsecuritized loans of all types.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ References

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