Note 16 - Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Details
Net income	$ 4,287	$ 3,935	$ 4,200	$ 4,214	$ 4,555	$ 4,280	$ 4,103	$ 3,534	$ 4,131	$ 4,206	$ 3,426	$ 3,024	$ 16,635	$ 16,473	$ 14,788
Weighted average shares, basic													3,629	3,637	3,647
Dilutive effect of stock options													8	6	13
Diluted shares													3,637	3,643	3,660
Earnings per share, basic													$ 4.58	$ 4.53	$ 4.05
Earnings Per Share Diluted	$ 1.18	$ 1.08	$ 1.15	$ 1.16	$ 1.25	$ 1.18	$ 1.12	$ 0.96	$ 1.13	$ 1.15	$ 0.94	$ 0.83	$ 4.57	$ 4.52	$ 4.04