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Warranty Reserves (Tables)
 3 Months Ended
Apr. 02, 2017
Product Warranties Disclosures [Abstract]  
Warranty Reserve Activity
A summary of warranty reserve activity for the three months ended April 2, 2017 and April 3, 2016 is as follows:
 
Three Months Ended
 
April 2,
2017
 
April 3,
2016
 
(In thousands)
Balance at beginning of period
$
9,012

 
$
9,843

Provision charged to income
2,989

 
3,659

Payments
(3,725
)
 
(3,915
)
Adjustments to previously provided warranties, net
539

 
(67
)
Foreign currency translation and acquisitions
122

 
231

Balance at end of period
$
8,937

 
$
9,751