Note 4 - Loans, Allowance for Credit Losses and Other Real Estate Owned - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Balance at beginning of period	$ 20,284	$ 23,514
(Reversal) provision	(1,550)	0
Chargeoffs	(2,039)	(1,212)
Recoveries	2,814	623
Total allowance for credit losses	19,509	22,925
Commercial Portfolio Segment [Member]
Balance at beginning of period	6,138	6,966
(Reversal) provision	(2,409)	(875)
Chargeoffs	(148)	0
Recoveries	2,165	224
Total allowance for credit losses	5,746	6,315
Commercial Real Estate Portfolio Segment [Member]
Balance at beginning of period	5,888	6,529
(Reversal) provision	355	(69)
Chargeoffs	0
Recoveries	15	15
Total allowance for credit losses	6,258	6,475
Construction Portfolio Segment [Member]
Balance at beginning of period	150	2
(Reversal) provision	50	(2)
Chargeoffs	0
Recoveries	0
Total allowance for credit losses	200	0
Residential Portfolio Segment [Member]
Balance at beginning of period	32	45
(Reversal) provision	6	3
Chargeoffs	0
Recoveries	0
Total allowance for credit losses	38	48
Consumer Portfolio Segment [Member]
Balance at beginning of period	8,076	9,972
(Reversal) provision	448	943
Chargeoffs	(1,891)	(1,212)
Recoveries	634	384
Total allowance for credit losses	$ 7,267	$ 10,087