Financing Obligation (Financing Obligation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Financing Obligation [Abstract]
Financing obligation payable in monthly installments of $303 at August 31, 2018, including principal and interest, with two percent annual increases (imputed interest at 7.7%), through June 2025	$ 21,075	$ 22,943
Less current portion	(2,092)	(1,868)
Total financing obligation, less current portion	18,983	$ 21,075
Monthly payment of financing obligation	$ 303
Annual increase to base payment	2.00%
Imputed interest	7.70%
Expiration date	June 2025