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, 2025	Mar. 31, 2024
Balance	$ 54,454	$ 49,914
Financing Receivable, Credit Loss, Expense (Reversal)	2,100	1,300
Charge-offs	(63)	(15)
Recoveries	175	439
Balance	56,666	51,638
Commercial Portfolio Segment [Member]
Charge-offs	0	(6)
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Balance	11,165	7,441
Financing Receivable, Credit Loss, Expense (Reversal)	598	1,466
Charge-offs	0	(6)
Recoveries	35	277
Balance	11,798	9,178
Commercial Portfolio Segment [Member] \| Vacant Land and Land Development and Residential Construction Loan [Member]
Balance	367	384
Financing Receivable, Credit Loss, Expense (Reversal)	18	2
Charge-offs	0	0
Recoveries	1	1
Balance	386	387
Commercial Portfolio Segment [Member] \| Real Estate Owner Occupied Loan [Member]
Balance	7,671	7,186
Financing Receivable, Credit Loss, Expense (Reversal)	6	(151)
Charge-offs	0	0
Recoveries	2	57
Balance	7,679	7,092
Commercial Portfolio Segment [Member] \| Real Estate Non Owner Occupied Loan [Member]
Balance	10,919	9,852
Financing Receivable, Credit Loss, Expense (Reversal)	1,027	289
Charge-offs	0	0
Recoveries	0	0
Balance	11,946	10,141
Commercial Portfolio Segment [Member] \| Real Estate Multi Family and Residential Rental Loan [Member]
Balance	3,667	3,184
Financing Receivable, Credit Loss, Expense (Reversal)	206	232
Charge-offs	0	0
Recoveries	5	4
Balance	3,878	3,420
Retail Portfolio Segment [Member]
Charge-offs	(63)	(9)
Retail Portfolio Segment [Member] \| One to Four Family Mortgages [Member]
Balance	18,702	18,986
Financing Receivable, Credit Loss, Expense (Reversal)	186	(476)
Charge-offs	(61)	0
Recoveries	47	70
Balance	18,874	18,580
Retail Portfolio Segment [Member] \| Other Consumer Loans [Member]
Balance	1,936	2,881
Financing Receivable, Credit Loss, Expense (Reversal)	83	(77)
Charge-offs	(2)	(9)
Recoveries	85	30
Balance	2,102	2,825
Unallocated Financing Receivables [Member]
Balance	27	0
Financing Receivable, Credit Loss, Expense (Reversal)	(24)	15
Charge-offs	0	0
Recoveries	0	0
Balance	$ 3	$ 15