Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Aug. 31, 2017	Feb. 28, 2017
Statement of Financial Position [Abstract]
Account receivable, allowance for doubtful accounts	$ 3,217	$ 2,857
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	53,153,432	52,897,128
Common stock, shares outstanding	53,153,432	52,897,128