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Derivatives - AOCI Activity (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance $ 267,945 $ 265,459 $ 270,421
Loss Recognized in AOCI 241 563 (159)
Ending balance 284,279 267,945 $ 265,459
Derivatives Designated as Hedging Instruments | Cash Flow Hedging      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (229)    
Loss reclassified to earnings 411    
Loss Recognized in AOCI (170)    
Ending balance 12 (229)  
Derivatives Designated as Hedging Instruments | Cash Flow Hedging | Interest rate swap agreements      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (162)    
Loss reclassified to earnings 241    
Loss Recognized in AOCI (39)    
Ending balance 40 (162)  
Derivatives Designated as Hedging Instruments | Cash Flow Hedging | Forward Currency-Exchange Contracts      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (67)    
Loss reclassified to earnings 170    
Loss Recognized in AOCI (131)    
Ending balance $ (28) $ (67)