6) Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
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Net earnings	$ 1,424,449	$ 1,930,318
Weighted Average Number of Shares Outstanding, Basic	18,184,575	18,102,318
Employee stock options	$ 186,777	$ 221,084
Diluted weighted-average shares outstanding	18,371,352	18,323,402
Earnings Per Share, Basic	$ 0.08	$ 0.11
Earnings Per Share, Diluted	$ 0.08	$ 0.11