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6. Income Taxes: Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($)
 12 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Details    
Current Federal Tax Expense (Benefit) $ 605,466 $ 1,083,541
Current State and Local Tax Expense (Benefit) 173,114 228,332
Other Tax Expense Benefit, depreciation 920 (20,036)
Other Tax Expense Benefit, inventory reserve 20,458 (22,956)
Other Tax Expense (Benefit) 8,383 19,394
Current 808,341 1,288,275
Current Income Tax Expense (Benefit) 808,341 1,288,275
Deferred income taxes (20,649) 70,509
Income tax expense benefit net $ 787,692 $ 1,358,784