5) Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Details
Net earnings	$ 5,291,697	$ 4,889,785	$ 12,442,516	$ 10,605,767
Weighted-average Class A equivalent common share outstanding (1)	14,113,005	13,804,061	14,027,706	13,681,406
GrantOfEmployeeStockOptions	$ 418,605	$ 659,909	$ 401,206	$ 602,935
Diluted weighted-average shares outstanding	14,531,610	14,463,970	14,428,912	14,284,341
Net earnings per Class A Equivalent common share (1)	$ 0.37	$ 0.35	$ 0.89	$ 0.78
Net earnings per Class A Equivalent common share-assuming dilution (1)	$ 0.36	$ 0.34	$ 0.86	$ 0.74