Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	May 31, 2016	May 31, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 2,784	$ (3,832)
Other comprehensive income (loss), net of tax:
Change in net foreign currency translation adjustment	334	(51)
Available-for-sale investments:
Change in net unrealized gains (losses) (net of tax effect of $0 and $0)	610	1,855
Less: reclassification adjustment for net gains included in net income (loss) (net of tax effect of $147 and $2)	(273)	(3)
Net change	337	1,852
Other comprehensive income	671	1,801
Comprehensive income (loss)	$ 3,455	$ (2,031)