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Net Income (Loss) Per Share (Tables)
 12 Months Ended
Feb. 28, 2017
Earnings Per Share [Abstract]  
Calculation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders
The following table presents the calculation of basic and diluted net income (loss) per share (in thousands, except per share amounts): 
 
Year Ended February 28/29,
 
2017
 
2016
 
2015
Net income (loss)
$
10,235

 
$
(4,422
)
 
$
(67,498
)
Weighted-average shares used to compute net income (loss) per share, basic
52,456

 
53,070

 
51,898

Dilutive shares from stock options and RSUs
1,116

 
—

 
—

Weighted-average shares used to compute net income (loss) per share, diluted
53,572

 
53,070

 
51,898

Net income (loss) per share, basic
$
0.20

 
$
(0.08
)
 
$
(1.30
)
Net income (loss) per share, diluted
$
0.19

 
$
(0.08
)
 
$
(1.30
)