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7. Earnings per Share: Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Details      
Stock options Included in diluted net income 0 0 7,054,500
Stock purchase warrants Included in diluted net income 0 0 1,200,000
Options and warrants Included in diluted net income 0 0 8,254,500
Stock options 7,054,500 8,404,500 0
Stock purchase warrants 13,725,123 12,900,123 12,525,123
Total 20,779,623 21,304,623 12,525,123