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Income Taxes - Loss Before Income Tax Provision (Benefit) (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Provision For Income Taxes [Line Items]      
United States $ (28,622) $ (134,384) $ (105,841)
Foreign 15,300 16,338 15,580
Loss before income taxes $ (13,322) $ (118,046) $ (90,261)