Summary of Significant Accounting Policies - Impairment of Long-lived Assets (Details) - USD ($)	3 Months Ended	12 Months Ended
	Aug. 31, 2016	Aug. 31, 2016	Aug. 31, 2015
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of long-lived assets		$ 8,635,000
Impairment of intangibles	$ 1,202,000	1,202,000	$ 0
Property, plant and equipment
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of long-lived assets	$ 7,433,000	$ 7,433,000