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Deferred Revenue and Customer Advances (Tables)
 6 Months Ended
Jun. 29, 2014
Deferred Revenue and Customer Advances

Deferred revenue and customer advances consist of the following and are included in short and long-term deferred revenue and customer advances on the balance sheet:

 

     June 29,
2014		      December 31,
2013		  
     (in thousands)  

Extended warranty

    $ 40,052       $ 34,909   

Equipment maintenance and training

      26,535         22,455   

Customer advances

      8,926         4,825   

Undelivered elements

      5,831         6,971   

Customer acceptance

      1,616        —     
  

 

 

     

 

 

  

Total deferred revenue and customer advances

    $ 82,960       $ 69,160