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, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Details
Net income	$ 3,412	$ 2,933	$ 1,313	$ 3,140	$ 4,359	$ 3,705	$ 3,525	$ 3,139	$ 3,393	$ 6,762	$ 4,308	$ 4,092	$ 10,798	$ 14,727	$ 18,555
Weighted average shares, basic													3,658	3,721	3,730
Dilutive effect of stock options													14	18	18
Diluted shares													3,672	3,739	3,748
Earnings per share, basic													$ 2.95	$ 3.96	$ 4.97
Earnings Per Share Diluted	$ 0.94	$ 0.80	$ 0.36	$ 0.84	$ 1.17	$ 0.99	$ 0.94	$ 0.84	$ 0.91	$ 1.80	$ 1.15	$ 1.09	$ 2.94	$ 3.94	$ 4.95