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Related Parties (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Feb. 28, 2018
Feb. 28, 2017
Feb. 28, 2018
Feb. 28, 2017
Aug. 31, 2017
Related Parties [Abstract]          
Sales to Tractor Supply $ 200,000 $ 200,000 $ 500,000 $ 500,000  
Accounts receivable from Tractor Supply $ 0   $ 0   $ 0