Net Income (Loss) Per Share - Calculation of Basic and Diluted Net Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | |
|---|---|---|
May 31, 2016 |
May 31, 2015 |
|
| Net Income (Loss) Available to Common Stockholders, Basic [Abstract] | ||
| Net income (loss) | $ 2,784 | $ (3,832) |
| Weighted Average Number of Shares Outstanding, Basic [Abstract] | ||
| Weighted-average shares used to compute net income (loss) per share, basic (in shares) | 52,285 | 52,996 |
| Dilutive shares from stock options and RSUs (in shares) | 569 | 0 |
| Weighted-average shares used to compute net income (loss) per share, diluted (in shares) | 52,854 | 52,996 |
| Earnings Per Share, Basic and Diluted [Abstract] | ||
| Net income (loss) per share, basic (in usd per share) | $ 0.05 | $ (0.07) |
| Net income (loss) per share, diluted (in usd per share) | $ 0.05 | $ (0.07) |