Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Details
Net income	$ 3,453	$ 3,956	$ 4,200	$ 4,214	$ 7,409	$ 8,414
Weighted average shares, basic	3,532		3,628		3,579	3,628
Dilutive effect of stock options	0		11		0	10
Diluted shares	3,532		3,639		3,579	3,638
Earnings per share, basic	$ 0.98		$ 1.16		$ 2.07	$ 2.32
Earnings per share, diluted	$ 0.98		$ 1.15		$ 2.07	$ 2.31