Note 5 - Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Balance	$ 146,485	$ 136,157
Provision/(reversal) for expected credit losses	25,655	12,913
Charge-offs	(23,486)	(5,490)
Recoveries	5,908	2,905
Net (Charge-offs)/Recoveries	(17,578)	(2,585)
Balance	154,562	146,485
Commitments to Extend Credit [Member]
Balance	8,730	7,100
Provision/(reversal) for expected credit losses	323	1,630
Balance	9,053	8,730
Commercial Portfolio Segment [Member]
Balance	49,435	43,394
Provision/(reversal) for expected credit losses	15,275	6,798
Charge-offs	(13,909)	(3,222)
Recoveries	2,990	2,465
Net (Charge-offs)/Recoveries	(10,919)	(757)
Balance	53,791	49,435
Commercial Portfolio Segment [Member] | Commitments to Extend Credit [Member]
Balance	4,840	3,725
Provision/(reversal) for expected credit losses	2,048	1,115
Balance	6,888	4,840
Real Estate Construction Portfolio Segment [Member]
Balance	10,417	6,302
Provision/(reversal) for expected credit losses	1,984	4,109
Charge-offs	(4,221)	0
Recoveries	0	6
Net (Charge-offs)/Recoveries	(4,221)	6
Balance	8,180	10,417
Real Estate Construction Portfolio Segment [Member] | Commitments to Extend Credit [Member]
Balance	3,890	3,375
Provision/(reversal) for expected credit losses	(1,725)	515
Balance	2,165	3,890
Commercial Real Estate Portfolio Segment [Member]
Balance	68,366	61,081
Provision/(reversal) for expected credit losses	8,570	9,079
Charge-offs	(5,341)	(2,152)
Recoveries	2,833	358
Net (Charge-offs)/Recoveries	(2,508)	(1,794)
Balance	74,428	68,366
Commercial Real Estate Portfolio Segment [Member] | Commitments to Extend Credit [Member]
Balance	0	0
Provision/(reversal) for expected credit losses	0	0
Balance	0	0
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Balance	18,232	25,379
Provision/(reversal) for expected credit losses	(177)	(7,221)
Charge-offs	0	0
Recoveries	85	74
Net (Charge-offs)/Recoveries	85	74
Balance	18,140	18,232
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Commitments to Extend Credit [Member]
Balance	0	0
Provision/(reversal) for expected credit losses	0	0
Balance	0	0
Installment and Other Loans [Member ]
Balance	35	1
Provision/(reversal) for expected credit losses	3	148
Charge-offs	(15)	(116)
Recoveries	0	2
Net (Charge-offs)/Recoveries	(15)	(114)
Balance	23	35
Installment and Other Loans [Member ] | Commitments to Extend Credit [Member]
Balance	0	0
Provision/(reversal) for expected credit losses	0	0
Balance	$ 0	$ 0