(7) Earnings Per Share: Reconciliation of the numerator and the denomintator used to calculate basic and diluted earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Details
Net income	$ 3,048	$ 3,041	$ 3,453	$ 3,956	$ 6,089	$ 7,409
Weighted average shares, basic	3,246		3,532		3,278	3,579
Dilutive effect of stock options	0		0		0	0
Shares outstanding - diluted	3,246		3,532		3,278	3,579
Earnings per share, basic	$ 0.94		$ 0.98		$ 1.86	$ 2.07
Earnings per common share (diluted)	$ 0.94		$ 0.98		$ 1.86	$ 2.07