Note 4 -Loans - Activity In The Allowance For Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2025		Mar. 31, 2024	Dec. 31, 2024
Balance, beginning of period	$ 12,001		$ 10,525	$ 10,525
Provision for (recovery of) credit losses	162		77
Losses charged off	(53)		(78)
Recoveries	14		33
Balance, end of period	$ 12,124		$ 10,557	12,001
Ratio of net charge-offs to average loans	0.01%		0.01%
Commercial and Industrial Portfolio Segment [Member]
Balance, beginning of period	$ 1,573		$ 1,039	1,039
Provision for (recovery of) credit losses	(266)		(72)
Losses charged off	0	[1]	0	(610)	[2]
Recoveries	0		0
Balance, end of period	$ 1,307		$ 967	1,573
Ratio of net charge-offs to average loans	0.00%		0.00%
Commercial Real Estate Portfolio Segment [Member]
Balance, beginning of period	$ 6,537		$ 5,414	5,414
Provision for (recovery of) credit losses	293		1,072
Losses charged off	0	[1]	0	0	[2]
Recoveries	0		0
Balance, end of period	$ 6,830		$ 6,486	6,537
Ratio of net charge-offs to average loans	0.00%		0.00%
Residential Portfolio Segment [Member]
Balance, beginning of period	$ 3,634		$ 3,816	3,816
Provision for (recovery of) credit losses	91		(964)
Losses charged off	0	[1]	0	0	[2]
Recoveries	4		0
Balance, end of period	$ 3,729		$ 2,852	3,634
Ratio of net charge-offs to average loans	(0.00%)		0.00%
Consumer Portfolio Segment [Member]
Balance, beginning of period	$ 220		$ 238	238
Provision for (recovery of) credit losses	1		(11)
Losses charged off	0	[1]	(3)	(43)	[2]
Recoveries	0		8
Balance, end of period	$ 221		$ 232	220
Ratio of net charge-offs to average loans	0.00%		(0.08%)
Agricultural Portfolio [Member]
Balance, beginning of period	$ 24		$ 18	18
Provision for (recovery of) credit losses	(4)		0
Losses charged off	0	[1]	0	(57)	[2]
Recoveries	0		0
Balance, end of period	$ 20		$ 18	24
Ratio of net charge-offs to average loans	0.00%		0.00%
Other Loans [Member]
Balance, beginning of period	$ 13		$ 0	0
Provision for (recovery of) credit losses	47		52
Losses charged off	(53)	[1]	(75)	(193)	[2]
Recoveries	10		25
Balance, end of period	$ 17		$ 2	$ 13
Ratio of net charge-offs to average loans	111.79%		259.48%

[1] for the three months ended March 31, 2025.

[2] for the year ended December 31, 2024.