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Business and Summary of Significant Accounting Policies Warranty Liabilities (Tables)
 12 Months Ended
Dec. 28, 2013
Warranty Liabilities [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
The activity in the accrued warranty liabilities account was as follows (in thousands): 
 
2013
 
2012
 
2011
Balance at beginning of period
$
4,858

 
$
6,310

 
$
5,744

Additions charged to costs and expenses for current-year sales
4,603

 
4,114

 
4,232

Deductions from reserves
(6,070
)
 
(5,094
)
 
(4,750
)
Changes in liability for pre-existing warranties during the current year, including expirations(1)
230

 
(472
)
 
1,084

Acquired warranty reserve
532

 
—

 
—

Balance at end of period
$
4,153

 
$
4,858

 
$
6,310

        
(1) 
Includes $1.6 million increase for customer-service reserves established during 2011.