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Commitments, Contingencies and Legal Matters (Tables)
 3 Months Ended
Mar. 30, 2014
Commitments And Contingencies Disclosure [Abstract]  
Summary of Changes in Product Warranties

The following table sets forth a summary of changes in product warranties (in thousands):

 

Balance as of December 31, 2013

    $  8,550   

Accruals for warranties issued during the period

      —     

Adjustments to pre-existing accruals (including changes in estimates)

      (363 ) 

Settlements made during the period (in cash or in kind)

      —     
  

 

 

  

Balance as of March 30, 2014

    $ 8,187