Note 3 - Loans and Allowance for Credit Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Balance at beginning of period	$ 20,284	$ 23,514	$ 23,854
(Reversal) provision	(1,150)	6	2
Chargeoffs	(7,954)	(6,225)	(3,248)
Recoveries	5,687	2,989	2,906
Total allowance for credit losses	16,867	20,284	23,514
Commercial Portfolio Segment [Member]
Balance at beginning of period	6,138	6,966	9,205
(Reversal) provision	(3,871)	(1,184)	(2,411)
Chargeoffs	(410)	(20)	(56)
Recoveries	2,359	376	228
Total allowance for credit losses	4,216	6,138	6,966
Commercial Real Estate Portfolio Segment [Member]
Balance at beginning of period	5,888	6,529	5,660
(Reversal) provision	11	(703)	126
Chargeoffs	(45)		0
Recoveries	71	62	743
Total allowance for credit losses	5,925	5,888	6,529
Construction Portfolio Segment [Member]
Balance at beginning of period	150	2	6
(Reversal) provision	95	148	(4)
Chargeoffs	0		0
Recoveries	0		0
Total allowance for credit losses	245	150	2
Residential Portfolio Segment [Member]
Balance at beginning of period	32	45	47
(Reversal) provision	(6)	(13)	(2)
Chargeoffs	0		0
Recoveries	0		0
Total allowance for credit losses	26	32	45
Consumer Portfolio Segment [Member]
Balance at beginning of period	8,076	9,972	8,936
(Reversal) provision	2,621	1,758	2,293
Chargeoffs	(7,499)	(6,205)	(3,192)
Recoveries	3,257	2,551	1,935
Total allowance for credit losses	$ 6,455	$ 8,076	$ 9,972