6) Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
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Net earnings	$ 20,557,047	$ 3,480,054	$ 21,981,496	$ 5,410,372
Weighted Average Number of Shares Outstanding, Basic	18,764,831	18,576,031	18,703,390	18,567,907
Employee stock options	$ 418,660	$ 234,245	$ 332,859	$ 239,669
Diluted weighted-average shares outstanding	19,183,491	18,810,276	19,036,249	18,807,576
Earnings Per Share, Basic	$ 1.10	$ 0.19	$ 1.18	$ 0.29
Earnings Per Share, Diluted	$ 1.07	$ 0.19	$ 1.15	$ 0.29