Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 10,341	$ 7,275	$ 9,816	$ 10,491
Other comprehensive income, net of tax:
Foreign currency translation adjustments	4,143	2,907	5,371	1,817
Reclassification adjustment for losses included in net income, net of tax of $0 for the second quarter and first six months of 2016	0	256	0	256
Unrealized gains (losses) on investments, net of tax provision of $5 and $45 for the second quarter and first six months of 2017, respectively and $0 for the second quarter and first six months of 2016	7	(43)	78	(3)
Total other comprehensive income, net of tax	4,150	3,120	5,449	2,070
Comprehensive income	$ 14,491	$ 10,395	$ 15,265	$ 12,561