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Income Taxes - Summary of (Benefit from) Provision for Income Taxes and Effective Tax Rate from Continuing Operations (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Income Tax Disclosure [Abstract]        
Pretax loss $ (10,218) $ (11,664) $ (35,208) $ (33,106)
(Benefit from) provision for income taxes $ (747) $ 1,854 $ (958) $ 2,074
Effective rate (7.30%) 15.90% (2.70%) 6.30%