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Accrued Liabilities (Tables)
 9 Months Ended
Sep. 26, 2015
Accrued Liabilities

Accrued liabilities consist of the following:

 

     As of
September 26,
2015		      As of
December 31,
2014		  

Accrued compensation and benefits

    $ 10,903       $ 17,544   

Accrued warranties

      2,204         2,719   

Professional and legal fees

      1,207         1,475   

Other accrued liabilities

      6,916         4,389   
  

 

 

     

 

 

  
   $ 21,230       $ 26,127   
  

 

 

     

 

 

  
Activity Related to Accrued Warranties

Activity related to accrued warranties was as follows:

 

     Nine Months Ended  
     September 26, 2015      September 27, 2014  

Balance, beginning of period

    $ 2,719       $ 2,364   

Provision for warranty expense

      2,394         2,697   

Fulfillment of warranty obligations

      (2,909 )       (2,604 ) 
  

 

 

     

 

 

  

Balance, end of period

    $ 2,204       $ 2,457