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12) Capital Stock: Schedule of Basic and diluted earnings per share (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Details            
Net Earnings (Loss)         $ 14,112,934 $ 12,188,627
Weighted Average Number of Shares Outstanding, Basic and Diluted         15,972,329 15,575,632
Employee stock options         $ 313,601 $ 336,960
Pro Forma Weighted Average Shares Outstanding, Diluted         313,601 336,960
Adjustedweighted average shares and assumed conversions         16,285,930 15,912,592
Net earnings per Class A Equivalent common share (1) $ 0.54 $ 0.07 $ 0.16 $ 0.12 $ 0.88 $ 0.78
Net earnings per Class A equivalent common share - assuming dilution (1) $ 0.53 $ 0.07 $ 0.15 $ 0.11 $ 0.87 $ 0.77