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Accrued Liabilities (Tables)
 9 Months Ended
Sep. 27, 2014
Accrued Liabilities

Accrued liabilities consist of the following:

 

     As of
September 27, 2014		      As of
December 31, 2013		  

Accrued compensation and benefits

    $ 14,630       $ 11,591   

Accrued warranties

      2,457         2,364   

Professional and legal fees

      1,979         1,203   

Other accrued liabilities

      4,368         4,975   
  

 

 

     

 

 

  
   $ 23,434       $ 20,133   
  

 

 

     

 

 

  
Activity Related to Accrued Warranties

Activity related to accrued warranties was as follows:

 

     Nine Months Ended  
     September 27, 2014     September 28, 2013  

Beginning Balance

    $ 2,364      $ 2,359   

Provision for warranty expense

      2,697        2,639   

Warranty expired

      (2,604 )      (2,571 ) 
  

 

 

    

 

 

  

Ending Balance

    $ 2,457      $ 2,427