Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 37,417	$ (55,726)	$ (8,801)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	9,655	(3,843)	(10,849)
Unrealized loss on investments, net of tax benefit of $60 in 2017, $53 in 2016, and $30 in 2015	(93)	(90)	(53)
Total other comprehensive income (loss), net of tax	9,562	(3,933)	(10,902)
Comprehensive income (loss)	$ 46,979	$ (59,659)	$ (19,703)