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Profit Sharing Plan (Details) - USD ($)
12 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 50.00%  
Defined Contribution Plan, Administrative Expense $ 401,000 $ 282,000
Defined Contribution Plan, Description five-year  
Employee Contributions [Member]    
Defined Contribution Plan, Employer Matching Contribution, Percent of Match 4.00%  
Deferred Profit Sharing [Member]    
Defined Contribution Plan, Employer Matching Contribution, Percent of Match 15.00%