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Financing Obligation (Financing Obligation) (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Financing Obligation [Abstract]    
Financing obligation payable in monthly installments of $297 at August 31, 2017, including principal and interest, with two percent annual increases (imputed interest at 7.7%), through June 2025 $ 22,943 $ 24,605
Less current portion (1,868) (1,662)
Total financing obligation, less current portion 21,075 $ 22,943
Monthly payment of financing obligation $ 297  
Annual increase to base payment 2.00%  
Imputed interest 7.70%  
Expiration date June 2025