Accrued Expenses - Summary of Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Payables And Accruals [Abstract]    
Marketing programs $ 4,631 $ 2,689
Payroll and payroll related 9,719 7,970
Professional fees 1,064 1,712
Other accrued liabilities 4,696 4,286
Total accrued expenses $ 20,110 $ 16,657