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Income Taxes - Summary of Provision for (Benefit from) Income Taxes and Effective Tax Rate from Continuing Operations (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Income Tax Disclosure [Abstract]        
Pretax loss $ (44,787) $ (54,989) $ (116,701) $ (128,430)
Provision for (benefit from) income taxes $ 1,116 $ (20,087) $ 3,190 $ (55,964)
Effective rate 2.50% (36.50%) 2.70% (43.60%)