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2. Significant Accounting Policies: Earnings Per Share (Details) - USD ($)
3 Months Ended 6 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2019
Feb. 28, 2018
Details        
Net income $ 119,629 $ 508,298 $ 469,323 $ 830,731
Basic weighted average number of common shares outstanding 4,218,348 4,468,988 4,218,672 4,468,988
Stock options 0 0 0 0
Diluted 4,218,348 4,468,988 4,218,672 4,468,988