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, 2024	Mar. 31, 2023
Details
Net income	$ 3,956	$ 4,214
Weighted average shares, basic	3,618	3,628
Dilutive effect of stock options	0	8
Diluted shares	3,618	3,636
Earnings per share, basic	$ 1.09	$ 1.16
Earnings per share, diluted	$ 1.09	$ 1.16