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Quarterly Financial Data - Schedule of Quarterly Financial Information (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Quarterly Financial Information Disclosure [Abstract] | |||||||||||
| Revenue | $ 3,212 | $ 3,181 | $ 3,180 | $ 2,922 | $ 2,021 | $ 1,797 | $ 1,797 | $ 252 | $ 12,495 | $ 5,867 | $ 62 |
| Net income (loss) | $ (7,589) | $ 1,176 | $ (12,788) | $ (9,214) | $ 28,388 | $ (991) | $ 17,001 | $ (115,533) | $ (28,415) | $ (71,135) | $ (25,653) |
| Basic | $ (0.13) | $ 0.02 | $ (0.22) | $ (0.16) | $ 0.50 | $ (0.02) | $ 0.31 | $ (2.30) | $ (0.49) | $ (1.31) | $ (0.56) |
| Diluted | $ (0.13) | $ (0.08) | $ (0.22) | $ (0.16) | $ (0.10) | $ (0.06) | $ (0.04) | $ (2.30) | $ (0.49) | $ (1.31) | $ (0.56) |
| X | ||||||||||
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- Definition
Revenue earned during the period arising from products sold or services provided under the terms of a contract, not elsewhere specified in the taxonomy. May include government contracts, construction contracts, and any other contract related to a particular project or product. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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- Details
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