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Derivatives - Activity in Accumulated Other Comprehensive Items (OCI) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Oct. 03, 2015
Sep. 27, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
(Loss) gain recognized in AOCI $ 97 $ (66) $ 17 $ (73)
Net unrealized loss included in OCI expected to be reclassified to earnings over the next 12 months     640  
Cash Flow Hedging [Member]        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Unrealized loss, net of tax, at January 3, 2015     (792)  
Loss (gain) reclassified to earnings     (1,308)  
(Loss) gain recognized in AOCI     1,325  
Unrealized loss, net of tax, at October 3, 2015 (775)   (775)  
Cash Flow Hedging [Member] | Interest Rate Swap Agreements [Member]        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Unrealized loss, net of tax, at January 3, 2015     (366)  
Loss (gain) reclassified to earnings     204  
(Loss) gain recognized in AOCI     (150)  
Unrealized loss, net of tax, at October 3, 2015 (312)   (312)  
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member]        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Unrealized loss, net of tax, at January 3, 2015     (426)  
Loss (gain) reclassified to earnings     (1,512)  
(Loss) gain recognized in AOCI     1,475  
Unrealized loss, net of tax, at October 3, 2015 $ (463)   $ (463)