Accrued Liabilities (Tables)
 12 Months Ended
Dec. 31, 2013
Payables And Accruals [Abstract]  
Summary of Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

 

     December 31,
2012		      December 31,
2013		  

Marketing programs

    $ 2,689      $ 4,631  

Payroll and payroll related

      7,970        9,719  

Professional fees

      1,712        1,064  

Other accrued liabilities

      4,286        4,696  
  

 

 

     

 

 

  

Total accrued expenses

    $ 16,657      $ 20,110