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Derivatives - AOCI Activity (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance $ 332,504 $ 284,279 $ 267,945
Loss recognized in AOCI (276) 67 241
Ending balance 374,571 332,504 $ 284,279
Derivatives Designated as Hedging Instruments | Cash Flow Hedging      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance 79    
Loss (gain) reclassified to earnings (8)    
Loss recognized in AOCI (268)    
Ending balance (197) 79  
Derivatives Designated as Hedging Instruments | Cash Flow Hedging | Interest rate swap agreements      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance 79    
Loss (gain) reclassified to earnings 8    
Loss recognized in AOCI (257)    
Ending balance (170) 79  
Derivatives Designated as Hedging Instruments | Cash Flow Hedging | Forward Currency-Exchange Contracts      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance 0    
Loss (gain) reclassified to earnings (16)    
Loss recognized in AOCI (11)    
Ending balance $ (27) $ 0