Note 6 - Other Assets and Other Liabilities - Amounts Recognized in Net Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Investment loss included in pre-tax income	$ 1,431	$ 620	$ 4,293	$ 1,820
Tax credits recognized in provision for income taxes	$ 804	$ 200	$ 2,412	$ 650

Amount of investment income (loss) of qualified affordable housing project investments accounted for using the equity method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 740
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=116633289&loc=SL49122993-202985

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration