Intangible Assets and Goodwill (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015	Nov. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, amortization expense	$ 7,100,000	$ 7,300,000	$ 14,300,000	$ 15,100,000
Goodwill impairment loss					$ 0