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Retirement Plans (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 02, 2016
Apr. 04, 2015
Minimum    
Amounts Recognized in Other Comprehensive Income [Abstract]    
Estimated future employer contributions in current fiscal year $ 5,000  
Maximum    
Amounts Recognized in Other Comprehensive Income [Abstract]    
Estimated future employer contributions in current fiscal year 10,000  
U.S. Pension Plans    
Net Periodic Benefit Cost [Abstract]    
Service cost 94  
Interest cost 1,745 $ 1,513
Expected return on plan assets (2,417) (2,318)
Net amortization: Net actuarial loss 667 679
Net periodic pension cost (benefit) 89 (126)
U.S. Retiree Healthcare Plan    
Net Periodic Benefit Cost [Abstract]    
Service cost 116 262
Interest cost 135 118
Expected return on plan assets (130) (122)
Net periodic pension cost (benefit) 121 258
Non-U.S. Pension Plans    
Net Periodic Benefit Cost [Abstract]    
Service cost 1,218 1,337
Interest cost 421 402
Expected return on plan assets (399) (410)
Net amortization: Prior service (credit) cost (45) 14
Net amortization: Net actuarial loss 188 273
Net periodic pension cost (benefit) $ 1,383 $ 1,616