Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Details
Net income	$ 3,563	$ 3,935	$ 10,972	$ 12,349
Weighted average shares, basic	3,478	3,629	3,542	3,629
Dilutive effect of stock options	0	10	0	9
Diluted shares	3,478	3,639	3,542	3,638
Earnings per share, basic	$ 1.02	$ 1.08	$ 3.1	$ 3.4
Earnings per share, diluted	$ 1.02	$ 1.08	$ 3.1	$ 3.39