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Term Loans Payable And Revolving Line Of Credit (Information Of Term Loans Payable) (Details)
12 Months Ended
Aug. 31, 2017
USD ($)
Outstanding Principal $ 19,063,000
Term Loan May 24, 2019 [Member]  
Maturity Date May 24, 2019
Original Principal Amount $ 15,000,000
Quarterly Principal Payment Amount 938,000
Outstanding Principal $ 10,313,000
Term Loan August 29, 2019 [Member]  
Maturity Date Aug. 29, 2019
Original Principal Amount $ 5,000,000
Quarterly Principal Payment Amount 313,000
Outstanding Principal $ 3,750,000
Term Loan August 29, 2020 [Member]  
Maturity Date Aug. 29, 2020
Original Principal Amount $ 5,000,000
Quarterly Principal Payment Amount 313,000
Outstanding Principal $ 5,000,000