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Business and Summary of Significant Accounting Policies Warranty Liabilities (Tables)
12 Months Ended
Jan. 03, 2015
Standard Product Warranty Disclosure [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
The activity in the accrued warranty liabilities account was as follows (in thousands): 
 
2014
 
2013
 
2012
Balance at beginning of period
$
4,153

 
$
4,858

 
$
6,310

Additions charged to costs and expenses for current-year sales
9,437

 
4,603

 
4,114

Deductions from reserves
(8,118
)
 
(6,070
)
 
(5,094
)
Changes in liability for pre-existing warranties during the current year, including expirations
352

 
230

 
(472
)
Acquired warranty reserve

 
532

 

Balance at end of period
$
5,824

 
$
4,153

 
$
4,858