Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (8,801)	$ 49,458	$ 74,907
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(10,849)	(4,484)	(1,066)
Unrealized (loss) gain on investments, net of tax (benefit) provision of $(30) in 2015, $1,400 in 2014, and $99 in 2013	(53)	2,417	171
Total other comprehensive (loss) income, net of tax	(10,902)	(2,067)	(895)
Comprehensive (loss) income	$ (19,703)	$ 47,391	$ 74,012