Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (55,726)	$ (8,801)	$ 49,458
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(3,843)	(10,849)	(4,484)
Unrealized (loss) gain on investments, net of tax (benefit) provision of $(53) in 2016, $(30) in 2015, and $1,400 in 2014	(90)	(53)	2,417
Total other comprehensive (loss) income, net of tax	(3,933)	(10,902)	(2,067)
Comprehensive (loss) income	$ (59,659)	$ (19,703)	$ 47,391