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Warranty Reserves (Tables)
 3 Months Ended
Mar. 31, 2013
Product Warranties Disclosures [Abstract]  
Schedule of Warranty Reserve Activity
The following is a summary of warranty reserve activity (in thousands):
 
Thirteen Weeks Ended
 
March 31,
2013
 
April 1,
2012
Balance, beginning of period
$
12,049

 
$
11,683

Reductions for warranty costs incurred
(3,403
)
 
(2,531
)
Warranties issued
3,788

 
2,621

Translation and changes in estimates
(154
)
 
129

Balance, end of period
$
12,280

 
$
11,902