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		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Balance	$ 55,442	$ 58,375	$ 58,191	$ 54,454
Financing Receivable, Credit Loss, Expense (Reversal)	700	200	(2,900)	3,900
Charge-offs	(46)	(172)	(61)	(273)
Recoveries	319	726	1,185	1,048
Balance	56,415	59,129	56,415	59,129
Commercial Portfolio Segment [Member]
Charge-offs			(18)	(87)
Retail Portfolio Segment [Member]
Charge-offs			(43)	(186)
Unallocated Financing Receivables [Member]
Balance	108	143	83	27
Financing Receivable, Credit Loss, Expense (Reversal)	14	(78)	39	38
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance	122	65	122	65
Commercial and Industrial [Member] \| Commercial Portfolio Segment [Member]
Balance	13,774	11,771	12,576	11,165
Financing Receivable, Credit Loss, Expense (Reversal)	827	101	1,659	660
Charge-offs	(10)	(76)	(18)	(87)
Recoveries	156	542	530	600
Balance	14,747	12,338	14,747	12,338
Vacant Land and Land Development and Residential Construction Loan [Member] \| Commercial Portfolio Segment [Member]
Balance	546	387	478	367
Financing Receivable, Credit Loss, Expense (Reversal)	312	17	331	35
Charge-offs	0	0	0	0
Recoveries	0	2	49	4
Balance	858	406	858	406
Real Estate Owner Occupied Loan [Member] \| Commercial Portfolio Segment [Member]
Balance	8,048	7,691	7,629	7,671
Financing Receivable, Credit Loss, Expense (Reversal)	118	(770)	523	(753)
Charge-offs	0	0	0	0
Recoveries	4	1	18	4
Balance	8,170	6,922	8,170	6,922
Real Estate Non Owner Occupied Loan [Member] \| Commercial Portfolio Segment [Member]
Balance	12,404	13,800	15,074	10,919
Financing Receivable, Credit Loss, Expense (Reversal)	592	3,632	(2,306)	6,513
Charge-offs	0	0	0	0
Recoveries	0	0	228	0
Balance	12,996	17,432	12,996	17,432
Real Estate Multi Family and Residential Rental Loan [Member] \| Commercial Portfolio Segment [Member]
Balance	5,057	4,297	5,514	3,667
Financing Receivable, Credit Loss, Expense (Reversal)	269	803	(196)	1,425
Charge-offs	0	0	0	0
Recoveries	5	4	13	12
Balance	5,331	5,104	5,331	5,104
One to Four Family Mortgages [Member] \| Retail Portfolio Segment [Member]
Balance	12,699	17,965	14,199	18,702
Financing Receivable, Credit Loss, Expense (Reversal)	(1,220)	(3,524)	(2,888)	(4,327)
Charge-offs	0	(85)	0	(171)
Recoveries	128	164	296	316
Balance	11,607	14,520	11,607	14,520
Other Consumer Loans [Member] \| Retail Portfolio Segment [Member]
Balance	2,806	2,321	2,638	1,936
Financing Receivable, Credit Loss, Expense (Reversal)	(212)	19	(62)	309
Charge-offs	(36)	(11)	(43)	(15)
Recoveries	26	13	51	112
Balance	$ 2,584	$ 2,342	$ 2,584	$ 2,342