SELECTED QUARTERLY FINANCIAL DATA (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| SELECTED QUARTERLY FINANCIAL DATA | |||||||||||
| Revenue | $ 900 | $ 3,584 | $ 3,000 | $ 3,760 | $ 8,594 | $ 5,029 | $ 4,484 | $ 20,383 | $ 28,895 | ||
| Net loss | $ (25,871) | $ (17,660) | $ (19,147) | $ (15,314) | $ (15,590) | $ (22,629) | $ (13,533) | $ (17,464) | $ (77,992) | $ (69,216) | $ (51,464) |
| Net loss per share, basic and diluted (in dollars per share) | $ (0.18) | $ (0.14) | $ (0.16) | $ (0.13) | $ (0.16) | $ (0.24) | $ (0.15) | $ (0.19) | $ (0.62) | $ (0.73) | $ (0.58) |
| Weighted average shares used in computing net loss per share, basic and diluted (in shares) | 144,252 | 124,628 | 122,500 | 113,598 | 98,981 | 95,454 | 92,495 | 90,555 | 126,324 | 94,387 | 88,434 |
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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 or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or 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. No definition available.
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- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). No definition available.
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