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, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Details
Net income	$ 4,359	$ 3,705	$ 3,525	$ 3,139	$ 3,393	$ 6,762	$ 4,308	$ 4,092	$ (2,522)	$ 3,622	$ 3,870	$ 3,536	$ 14,727	$ 18,555	$ 8,505
Weighted average shares, basic													3,721	3,730	3,718
Dilutive effect of stock options													18	18	19
Diluted shares													3,739	3,748	3,737
Earnings per share, basic													$ 3.96	$ 4.97	$ 2.29
Earnings Per Share Diluted	$ 1.17	$ 0.99	$ 0.94	$ 0.84	$ 0.91	$ 1.80	$ 1.15	$ 1.09	$ (0.67)	$ 0.97	$ 1.04	$ 0.95	$ 3.94	$ 4.95	$ 2.28