Note 5 - Loans and the Allowance for Credit Losses - Summary of (Reversal of) Provision for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Provision for credit losses - loans	$ 9,338	$ 916	$ 13,816	$ (6,046)
Provision for credit losses	10,000	1,100	14,450	(6,315)
Unfunded Loan Commitment [Member]
Provision for credit losses - unfunded commitments	$ 662	$ 184	$ 634	$ (269)

Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

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- Definition

Amount of credit loss expense (reversal of expense) for financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
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- Details

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