Other Liabilities (Tables)
 12 Months Ended
Dec. 31, 2012
Other Liabilities  
Schedule of components of accrued liabilities

 Accrued liabilities consist of the following (in thousands):

 
   December 31,  
 
   2012   2011  

Employee compensation

   $ 13,699   $ 13,341  

Working capital adjustment due to EyeWonder seller

     2,799     10,244  

Taxes payable

     7,192     1,738  

Installment payment due to Peer 39 seller

     2,331     —  

Revenue earnouts (Notes 3 and 8)

     2,430     469  

Acquisition exit costs (office closures)

     407     860  

Other

     9,433     7,226  
           

Total

   $ 38,291   $ 33,878  
           
Schedule of other non-current liabilities

  Other non-current liabilities consist of the following (in thousands):

 
   December 31,  
 
   2012   2011  

Deferred rent

   $ 10,032   $ 549  

Israeli statutory employee compensation

     5,575     4,057  

Revenue earnouts (Notes 3 and 8)

     427     1,204  

Other

     288     1,429  
           

Total

   $ 16,322   $ 7,239