6) Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
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Net earnings	$ 29,304,769	$ 3,617,414	$ 51,286,265	$ 9,027,786
Weighted Average Number of Shares Outstanding, Basic	18,873,886	18,551,116	18,760,884	18,560,874
Employee stock options	$ 559,733	$ 203,975	$ 404,006	$ 208,561
Diluted weighted-average shares outstanding	19,433,619	18,755,091	19,164,890	18,769,435
Earnings Per Share, Basic	$ 1.55	$ 0.19	$ 2.73	$ 0.49
Earnings Per Share, Diluted	$ 1.51	$ 0.19	$ 2.68	$ 0.48