Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Details
Net income	$ 4,214	$ 3,534
Weighted average shares, basic	3,628	3,655
Dilutive effect of stock options	8	10
Diluted shares	3,636	3,665
Earnings per share, basic	$ 1.16	$ 0.97
Earnings per share, diluted	$ 1.16	$ 0.96