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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Balance	$ 55,408	$ 44,721	$ 49,914	$ 42,246
Financing Receivable, Credit Loss, Expense (Reversal)	1,100	3,300	5,900	5,900
Charge-offs	(10)	(243)	(51)	(810)
Recoveries	92	230	827	672
Balance	56,590	48,008	56,590	48,008
Commercial Portfolio Segment [Member]
Charge-offs			(9)	(272)
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Balance	13,215	6,472	7,441	10,203
Financing Receivable, Credit Loss, Expense (Reversal)	1,671	2,500	7,147	(1,123)
Charge-offs	(3)	0	(9)	(218)
Recoveries	31	26	335	136
Balance	14,914	8,998	14,914	8,998
Commercial Portfolio Segment [Member] \| Vacant Land and Land Development and Residential Construction Loan [Member]
Balance	393	304	384	490
Financing Receivable, Credit Loss, Expense (Reversal)	(40)	31	(34)	(167)
Charge-offs	0	0	0	0
Recoveries	1	22	4	34
Balance	354	357	354	357
Commercial Portfolio Segment [Member] \| Real Estate Owner Occupied Loan [Member]
Balance	7,190	5,838	7,186	5,914
Financing Receivable, Credit Loss, Expense (Reversal)	336	627	181	495
Charge-offs	0	(40)	0	(54)
Recoveries	2	9	161	79
Balance	7,528	6,434	7,528	6,434
Commercial Portfolio Segment [Member] \| Real Estate Non Owner Occupied Loan [Member]
Balance	10,249	8,689	9,852	9,242
Financing Receivable, Credit Loss, Expense (Reversal)	351	564	748	11
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance	10,600	9,253	10,600	9,253
Commercial Portfolio Segment [Member] \| Real Estate Multi Family and Residential Rental Loan [Member]
Balance	3,589	3,700	3,184	2,191
Financing Receivable, Credit Loss, Expense (Reversal)	(369)	(1,071)	28	426
Charge-offs	0	0	0	0
Recoveries	4	6	12	18
Balance	3,224	2,635	3,224	2,635
Retail Portfolio Segment [Member]
Charge-offs			(42)	(538)
Retail Portfolio Segment [Member] \| One to Four Family Mortgages [Member]
Balance	18,513	19,498	18,986	14,027
Financing Receivable, Credit Loss, Expense (Reversal)	(354)	726	(923)	6,317
Charge-offs	0	(201)	0	(513)
Recoveries	33	161	129	353
Balance	18,192	20,184	18,192	20,184
Retail Portfolio Segment [Member] \| Other Consumer Loans [Member]
Balance	2,250	199	2,881	160
Financing Receivable, Credit Loss, Expense (Reversal)	(539)	(56)	(1,300)	(40)
Charge-offs	(7)	(2)	(42)	(25)
Recoveries	21	6	186	52
Balance	1,725	147	1,725	147
Unallocated Financing Receivables [Member]
Balance	9	21	0	19
Financing Receivable, Credit Loss, Expense (Reversal)	44	(21)	53	(19)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance	$ 53	$ 0	$ 53	$ 0

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

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