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Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2017	Feb. 29, 2016
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (525)	$ 3,216
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	1,228	(1,091)
Unrealized gains on investments, net of tax provision of $40 and $23 for 2017 and 2016, respectively	71	40
Total other comprehensive income (loss), net of tax	1,299	(1,051)
Comprehensive income	$ 774	$ 2,165

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