Net Income (Loss) Per Common Share - Reconciliation of Numerator and Denominator (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Numerator: | |||||||||||
| Net income (loss) - basic | $ (3,682) | $ (5,696) | $ (6,864) | $ (7,852) | $ 69,713 | $ (6,431) | $ (8,306) | $ (11,154) | $ (24,094) | $ 43,822 | $ (21,584) |
| Less: noncash income from change in fair value of common stock warrants | 3,906 | 9,344 | |||||||||
| Net income (loss) - diluted | $ (24,094) | $ 39,916 | $ (30,928) | ||||||||
| Denominator: | |||||||||||
| Weighted-average number of common shares outstanding | 71,524 | 70,242 | 60,335 | ||||||||
| Dilutive effect of equity incentive awards | 1,873 | ||||||||||
| Dilutive effect of warrants | 1,368 | 3,051 | |||||||||
| Weighted-average common shares outstanding and dilutive potential common share-diluted | 71,524 | 73,483 | 63,386 | ||||||||
| Net income (loss) per share: | |||||||||||
| Basic | $ (0.05) | $ (0.08) | $ (0.10) | $ (0.11) | $ 0.98 | $ (0.09) | $ (0.12) | $ (0.17) | $ (0.34) | $ 0.62 | $ (0.36) |
| Diluted | $ (0.05) | $ (0.08) | $ (0.10) | $ (0.11) | $ 0.86 | $ (0.09) | $ (0.12) | $ (0.17) | $ (0.34) | $ 0.54 | $ (0.49) |
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- Definition Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of dilutive convertible securities excluding adjustments related to ESOP convertible preferred stock, stock options, and restrictive stock units. No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of equity unit purchase agreements using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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