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COMMITMENTS AND CONTINGENCIES (Tables)
 3 Months Ended
Mar. 27, 2016
Commitments and Contingencies Disclosure [Abstract]  
Summary of Changes in Product Warranty Accrual
The following table summarizes changes in our product warranty accrual for the periods indicated (in thousands):
 
Three Months Ended
 
March 27,
2016
 
March 29,
2015
Beginning balance
$
3,040

 
$
2,803

Warranties issued in the period
262

 
872

Costs to service warranties
(1,029
)
 
(982
)
Warranty accrual adjustments
272

 
650

Ending balance
$
2,545

 
$
3,343