Quarterly Financial Data (unaudited) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||||
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Dec. 31, 2014
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Sep. 30, 2014
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Jun. 30, 2014
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Mar. 31, 2014
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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, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Quarterly Financial Information Disclosure [Abstract] | ||||||||||||||||||||||||||
Revenues | $ 65,952 | $ 66,807 | $ 67,645 | $ 67,550 | $ 66,420 | $ 67,710 | $ 67,177 | $ 65,906 | $ 267,954 | [1] | $ 267,213 | [1] | $ 266,220 | [1] | ||||||||||||
Loss from operations | (102,463) | (61,358) | (62,135) | (47,612) | (79,379) | (45,876) | (136,278) | (67,454) | (273,568) | (328,986) | (75,832) | |||||||||||||||
Net loss | (184,022) | (104,800) | (280,710) | (122,345) | (147,747) | (122,483) | (163,904) | (124,629) | (691,877) | (558,763) | (345,641) | |||||||||||||||
Net loss attributable to common stockholders | $ (158,613) | $ (89,581) | $ (201,928) | $ (97,810) | $ (135,229) | $ (100,824) | $ (154,764) | $ (117,105) | $ (547,932) | $ (507,922) | $ (332,780) | |||||||||||||||
Net loss per share attributable to common stockholders—basic and diluted | $ (0.70) | [2] | $ (0.40) | [2] | $ (0.90) | [2] | $ (0.44) | [2] | $ (0.61) | [2] | $ (0.46) | [2] | $ (0.71) | [2] | $ (0.54) | [2] | $ (2.44) | $ (2.32) | $ (1.83) | |||||||
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