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Deferred Revenue and Customer Advances
3 Months Ended
Apr. 01, 2018
Deferred Revenue and Customer Advances

I. 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:

 

     April 1,
2018
     December 31,
2017
 
     (in thousands)  

Maintenance and training

   $ 59,365      $ 57,256  

Extended warranty

     24,590        24,438  

Customer advances, undelivered elements and other

     23,663        32,047  
  

 

 

    

 

 

 

Total deferred revenue and customer advances

   $ 107,618      $ 113,741