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Warranty Reserves (Tables)
 6 Months Ended
Jun. 30, 2013
Product Warranties Disclosures [Abstract]  
Schedule of Warranty Reserve Activity
The following is a summary of warranty reserve activity (in thousands):
 
Twenty-Six Weeks Ended
 
June 30,
2013
 
July 1,
2012
Balance, beginning of period
$
12,049

 
$
11,683

Reductions for warranty costs incurred
(6,580
)
 
(5,239
)
Warranties issued
6,804

 
5,153

Translation and changes in estimates
(127
)
 
(118
)
Balance, end of period
$
12,146

 
$
11,479