Note 3 - Loans and Allowance for Credit Losses - Activity in Allowance for Loan Losses and the Recorded Investments in Loans (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Balance	$ 49,914	$ 42,246
Financing Receivable, Credit Loss, Expense (Reversal)	1,300	600
Charge-offs	(15)	(106)
Recoveries	439	137
Balance	51,638	42,877
Revision of Prior Period, Adjustment [Member]
Balance		0
Revision of Prior Period, After Reclassification [Member]
Balance		42,246
Commercial Portfolio Segment [Member]
Charge-offs	(6)	(50)
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Balance	7,441	10,203
Financing Receivable, Credit Loss, Expense (Reversal)	1,466	(757)
Charge-offs	(6)	(36)
Recoveries	277	21
Balance	9,178	9,521
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Revision of Prior Period, Adjustment [Member]
Balance		90
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Revision of Prior Period, After Reclassification [Member]
Balance		10,293
Commercial Portfolio Segment [Member] \| Vacant Land and Land Development and Residential Construction Loan [Member]
Balance	384	490
Financing Receivable, Credit Loss, Expense (Reversal)	2	(41)
Charge-offs	0	0
Recoveries	1	1
Balance	387	450
Commercial Portfolio Segment [Member] \| Vacant Land and Land Development and Residential Construction Loan [Member] \| Revision of Prior Period, Adjustment [Member]
Balance		0
Commercial Portfolio Segment [Member] \| Vacant Land and Land Development and Residential Construction Loan [Member] \| Revision of Prior Period, After Reclassification [Member]
Balance		490
Commercial Portfolio Segment [Member] \| Real Estate Owner Occupied Loan [Member]
Balance	7,186	5,914
Financing Receivable, Credit Loss, Expense (Reversal)	(151)	(28)
Charge-offs	0	(14)
Recoveries	57	48
Balance	7,092	5,920
Commercial Portfolio Segment [Member] \| Real Estate Owner Occupied Loan [Member] \| Revision of Prior Period, Adjustment [Member]
Balance		0
Commercial Portfolio Segment [Member] \| Real Estate Owner Occupied Loan [Member] \| Revision of Prior Period, After Reclassification [Member]
Balance		5,914
Commercial Portfolio Segment [Member] \| Real Estate Non Owner Occupied Loan [Member]
Balance	9,852	9,242
Financing Receivable, Credit Loss, Expense (Reversal)	289	(115)
Charge-offs	0	0
Recoveries	0	0
Balance	10,141	9,127
Commercial Portfolio Segment [Member] \| Real Estate Non Owner Occupied Loan [Member] \| Revision of Prior Period, Adjustment [Member]
Balance		0
Commercial Portfolio Segment [Member] \| Real Estate Non Owner Occupied Loan [Member] \| Revision of Prior Period, After Reclassification [Member]
Balance		9,242
Commercial Portfolio Segment [Member] \| Real Estate Multi Family and Residential Rental Loan [Member]
Balance	3,184	2,191
Financing Receivable, Credit Loss, Expense (Reversal)	232	313
Charge-offs	0	0
Recoveries	4	7
Balance	3,420	2,511
Commercial Portfolio Segment [Member] \| Real Estate Multi Family and Residential Rental Loan [Member] \| Revision of Prior Period, Adjustment [Member]
Balance		0
Commercial Portfolio Segment [Member] \| Real Estate Multi Family and Residential Rental Loan [Member] \| Revision of Prior Period, After Reclassification [Member]
Balance		2,191
Retail Portfolio Segment [Member]
Charge-offs	(9)	(56)
Retail Portfolio Segment [Member] \| One to Four Family Mortgages [Member]
Balance	18,986	14,027
Financing Receivable, Credit Loss, Expense (Reversal)	(476)	1,168
Charge-offs	0	(42)
Recoveries	70	41
Balance	18,580	14,497
Retail Portfolio Segment [Member] \| One to Four Family Mortgages [Member] \| Revision of Prior Period, Adjustment [Member]
Balance		(697)
Retail Portfolio Segment [Member] \| One to Four Family Mortgages [Member] \| Revision of Prior Period, After Reclassification [Member]
Balance		13,330
Retail Portfolio Segment [Member] \| Other Consumer Loans [Member]
Balance	2,881	160
Financing Receivable, Credit Loss, Expense (Reversal)	(77)	3
Charge-offs	(9)	(14)
Recoveries	30	19
Balance	2,825	775
Retail Portfolio Segment [Member] \| Other Consumer Loans [Member] \| Revision of Prior Period, Adjustment [Member]
Balance		607
Retail Portfolio Segment [Member] \| Other Consumer Loans [Member] \| Revision of Prior Period, After Reclassification [Member]
Balance		767
Unallocated Financing Receivables [Member]
Balance	0	19
Financing Receivable, Credit Loss, Expense (Reversal)	15	57
Charge-offs	0	0
Recoveries	0	0
Balance	$ 15	76
Unallocated Financing Receivables [Member] \| Revision of Prior Period, Adjustment [Member]
Balance		0
Unallocated Financing Receivables [Member] \| Revision of Prior Period, After Reclassification [Member]
Balance		$ 19

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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