Quarterly Financial Data - Schedule of Quarterly Financial Information (Detail) - USD ($) $ / shares in Units, $ 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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| Quarterly Financial Information Disclosure [Abstract] | |||||||||||
| Revenue | $ 0 | $ 0 | $ 0 | $ 0 | $ 65,874 | $ 3,680 | $ 3,680 | $ 3,681 | $ 0 | $ 76,915 | $ 14,722 |
| Net income (loss) | $ (3,682) | $ (5,696) | $ (6,864) | $ (7,852) | $ 69,713 | $ (6,431) | $ (8,306) | $ (11,154) | $ (24,094) | $ 43,822 | $ (21,584) |
| Net income (loss) per common 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 revenue earned from products sold or services provided under the terms of a contract, including, but not limited to, government contracts and construction contracts, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 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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