Intangible Assets and Goodwill (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2016	Aug. 31, 2015	Nov. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 5,051,000	$ 0	$ 5,051,000	$ 0
Intangible assets, amortization expense	7,100,000	$ 7,300,000	$ 21,400,000	$ 22,400,000
Goodwill impairment loss					$ 0
Modulus [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 5,100,000