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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]  
Aggregate Future Minimum Lease Payments under all Non-cancelable Lease Agreements

At December 31, 2013, the aggregate future minimum lease payments under all non-cancelable lease agreements were as follows:

 

(in thousands)

      

2014

   $ 34,972   

2015

     31,386   

2016

     27,830   

2017

     22,209   

2018

     16,015   

Thereafter

     42,074   
  

 

 

 

Total minimum future lease payments

   $ 174,486