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Deferred Revenue and Customer Advances (Tables)
9 Months Ended
Oct. 01, 2017
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:

 

     October 1,
2017
     December 31,
2016
 
     (in thousands)  

Extended warranty

   $ 26,492      $ 28,200  

Customer advances, undelivered elements and other

     58,577        32,938  

Maintenance and training

     58,123        46,803  
  

 

 

    

 

 

 

Total

   $ 143,192      $ 107,941