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Accrued Expenses and Other Current Liabilities - Details of Accrued Expenses and Other Current Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Payables And Accruals [Abstract]    
Accrued salary, bonus, and related benefits $ 34,756 $ 29,438
Accrued marketing costs 21,901 11,941
Accrued charitable foundation payments 7,217 6,757
Other 21,660 15,100
Total accrued expenses and other current liabilities $ 85,534 $ 63,236