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Debt - Schedule of Debt (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Debt Disclosure [Abstract]    
2013 Senior Secured Credit Facility, principal of $538 payable quarterly, matures in July 2020, net of unamortized discount of $375 and $446 as of September 30, 2014 and December 31, 2013, respectively $ 212,197 $ 228,404
Less current portion (8,568) (17,300)
Debt, net of current portion $ 203,629 $ 211,104