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NET LOSS PER SHARE - ADDITIONAL INFORMATION (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Income (loss) from continuing operations | $ (6,205) | $ 1,595 | $ (8,900) | $ 1,536
Income from discontinued operations | 649 | 0 | 649 | 0
Net income (loss) used in computing basic net income (loss) per share | $ (5,556) | $ 1,595 | $ (8,251) | $ 1,536
Shares used in computation of basic and diluted net income (loss) per share (weighted average common shares outstanding) | 28,834,000 | 28,070,000 | 28,663,000 | 27,944,000
Stock options, ESPP, restricted Stock and RSUs | 0 | 836,000 | 0 | 835,000
Shares used in computation of diluted net income (loss) per share | 28,834,000 | 28,906,000 | 28,663,000 | 28,779,000
Basic net income (loss) per share - Continuing operations (in dollars per share) | $ (0.22) | $ 0.06 | $ (0.31) | $ 0.05
Basic net income (loss) per share - Discontinued operations (in dollars per share) | 0.02 | 0.00 | 0.02 | 0.00
Basic net income (loss) per share (in dollars per share) | (0.20) | 0.06 | (0.29) | 0.05
Diluted net income (loss) per share - Continuing Operations (in dollars per share | (0.22) | 0.06 | (0.31) | 0.05
Diluted net income (loss) per share - Discontinued operations (in dollars per share) | 0.02 | 0.00 | 0.02 | 0.00
Diluted net income (loss) per share (in dollars per share) | $ (0.20) | $ 0.06 | $ (0.29) | $ 0.05
Options to purchase shares of common stock (in shares) | 1,300,000 |  | 2,100,000 |
Average fair market value of stock (in dollars per share) | $ 11.28 |  | $ 10.08 |
Outstanding stock options |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Options to purchase shares of common stock (in shares) |  |  | 3,521,481 |
Unvested restricted stock awards |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Options to purchase shares of common stock (in shares) |  |  | 77,540 |
Unvested RSUs |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Options to purchase shares of common stock (in shares) |  |  | 510,234 |
ESPP |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Options to purchase shares of common stock (in shares) |  |  | 27,670 |

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