Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 7,275	$ 5,769	$ 10,491	$ 4,798
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	2,907	(2,672)	1,817	(8,154)
Reclassification adjustment for losses included in net income, net of tax of $0 for the second quarter and first six months of 2016	256		256	0
Unrealized losses on investments, net of tax of $0 for the second quarter and first six months of 2016 and 2015	(43)	(33)	(3)	(35)
Total other comprehensive income (loss), net of tax	3,120	(2,705)	2,070	(8,189)
Comprehensive income (loss)	$ 10,395	$ 3,064	$ 12,561	$ (3,391)