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Warranty Reserves (Tables)
 3 Months Ended
Apr. 01, 2012
Product Warranties Disclosures [Abstract]  
Warranty Reserve Activity
Warranty reserve activity for the three months ended April 1, 2012 and April 3, 2011 is summarized below:
 
 
Three Months Ended
 
April 1,
2012
 
April 3,
2011
 
(In thousands)
Balance beginning of period
$
10,412

 
$
8,250

Provision charged to income
4,626

 
3,328

Payments
(4,847
)
 
(3,427
)
Adjustments to previously provided warranties, net
457

 
(125
)
Foreign currency translation and acquisitions
101

 
245

Balance end of period
$
10,749

 
$
8,271