Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	May 31, 2019	May 31, 2018	[1]	May 31, 2019	May 31, 2018	[1]
Statement of Comprehensive Income [Abstract]
Net income	$ 8,181	$ 12,904		$ 17,583	$ 26,637	[2]
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(2,030)	(9,018)		(551)	(5,187)
Unrealized gain (loss) on investments, net of tax provision of $18 and $48 for the second quarter and first six months of 2019, respectively, and $0 and $39 for the second quarter and first six months of 2018, respectively	54	(1)		137	(28)
Total other comprehensive loss, net of tax	(1,976)	(9,019)		(414)	(5,215)
Comprehensive income	$ 6,205	$ 3,885		$ 17,169	$ 21,422

[1] The Company adopted ASC 606 effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Basis of Presentation for further information.

[2] The Company adopted ASC 606 effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Basis of Presentation for further information.