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, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Details
Net income	$ 4,555	$ 4,280	$ 4,103	$ 3,534	$ 4,131	$ 4,206	$ 3,426	$ 3,024	$ 3,412	$ 2,933	$ 1,313	$ 3,140	$ 16,473	$ 14,788	$ 10,798
Weighted average shares, basic													3,637	3,647	3,658
Dilutive effect of stock options													6	13	14
Diluted shares													3,643	3,660	3,672
Earnings per share, basic													$ 4.53	$ 4.05	$ 2.95
Earnings Per Share Diluted	$ 1.25	$ 1.18	$ 1.12	$ 0.96	$ 1.13	$ 1.15	$ 0.94	$ 0.83	$ 0.94	$ 0.80	$ 0.36	$ 0.84	$ 4.52	$ 4.04	$ 2.94