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Long-Term Debt - Principal Amount and Unamortized Discount (Detail) (Term Loan [Member], USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Term Loan [Member]
   
Debt Instrument [Line Items]    
Principal amount $ 20,000 $ 20,000
Less: unamortized original issue discount (1,260) (1,510)
Term Loan, net of unamortized original issue discount $ 18,740 $ 18,490