Note 4 - Loans and Allowance for Credit Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Allowance for loan losses			$ 4,361	$ 4,260	$ 4,260
Provision for loan losses			97	314	725
Charge-offs	$ 0	$ (356)	0	(356)	(647)
Recoveries	53	11	60	15	23
Allowance for loan losses	4,518	4,233	4,518	4,233	4,361
Allowance for loan losses ending balance evaluated for impairment individually	0	300	0	300	0
Allowance for loan losses ending balance evaluated for impairment collectively	4,518	3,933	4,518	3,933	4,361
Outstanding loan balances evaluated for impairment individually	0	577	0	577	0
Outstanding loan balances evaluated for impairment collectively	641,901	619,632	641,901	619,632	638,340
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses			2,384	2,481	2,481
Provision for loan losses			0	821	550
Charge-offs			0	(356)	(647)
Recoveries			50	0	0
Allowance for loan losses	2,434	2,946	2,434	2,946	2,384
Allowance for loan losses ending balance evaluated for impairment individually	0	300	0	300	0
Allowance for loan losses ending balance evaluated for impairment collectively	2,434	2,130	2,434	2,130	2,384
Outstanding loan balances evaluated for impairment individually	0	307	0	307	0
Outstanding loan balances evaluated for impairment collectively	441,266	415,625	441,266	415,625	432,726
Residential Portfolio Segment [Member]
Allowance for loan losses			644	751	751
Provision for loan losses			0	(547)	(130)
Charge-offs			0	0	0
Recoveries			10	15	23
Allowance for loan losses	654	219	654	219	644
Allowance for loan losses ending balance evaluated for impairment individually	0	0	0	0	0
Allowance for loan losses ending balance evaluated for impairment collectively	654	735	654	735	644
Outstanding loan balances evaluated for impairment individually	0	270	0	270	0
Outstanding loan balances evaluated for impairment collectively	118,803	115,456	118,803	115,456	118,924
Construction and Land Development [Member]
Allowance for loan losses			520
Provision for loan losses			0
Charge-offs			0		0
Recoveries			0
Allowance for loan losses	520		520		520
Allowance for loan losses ending balance evaluated for impairment individually	0		0
Allowance for loan losses ending balance evaluated for impairment collectively	520		520
Outstanding loan balances evaluated for impairment individually	0		0
Outstanding loan balances evaluated for impairment collectively	31,576		31,576
Commercial Portfolio Segment [Member]
Allowance for loan losses			762	513	513
Provision for loan losses			0	95	249
Charge-offs			0	0	0
Recoveries			0	0	0
Allowance for loan losses	762	608	762	608	762
Allowance for loan losses ending balance evaluated for impairment individually	0	0	0	0	0
Allowance for loan losses ending balance evaluated for impairment collectively	762	608	762	608	762
Outstanding loan balances evaluated for impairment individually	0	0	0	0	0
Outstanding loan balances evaluated for impairment collectively	50,146	56,975	50,146	56,975	49,869
Consumer Portfolio Segment [Member]
Allowance for loan losses			1	4	4
Provision for loan losses			0	(4)	(3)
Charge-offs			0	0	0
Recoveries			0	0	0
Allowance for loan losses	1	0	1	0	1
Allowance for loan losses ending balance evaluated for impairment individually	0	0	0	0	0
Allowance for loan losses ending balance evaluated for impairment collectively	1	0	1	0	1
Outstanding loan balances evaluated for impairment individually	0	0	0	0	0
Outstanding loan balances evaluated for impairment collectively	110	544	110	544	469
Unallocated Financing Receivables [Member]
Allowance for loan losses			50	33	33
Provision for loan losses			97	(33)	17
Charge-offs			0	0	0
Recoveries			0	0	0
Allowance for loan losses	147	0	147	0	50
Allowance for loan losses ending balance evaluated for impairment individually	0	0	0	0	0
Allowance for loan losses ending balance evaluated for impairment collectively	147	0	147	0	50
Outstanding loan balances evaluated for impairment individually	0	0	0	0	0
Outstanding loan balances evaluated for impairment collectively	$ 0	$ 0	$ 0	$ 0	$ 0

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
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