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Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 01, 2017
USD ($)
plan
defined_benefit_plan
Jul. 02, 2016
USD ($)
Jul. 01, 2017
USD ($)
plan
defined_benefit_plan
Jul. 02, 2016
USD ($)
The weighted average assumptions used to determine net periodic benefit cost are as follows:        
Contributions to noncontributory defined benefit plan     $ 540  
Expected contributions to noncontributory defined benefit plan for the remainder of the year     540  
Other Benefits [Member]        
Components of Net Periodic Benefit Cost:        
Service cost $ 53 $ 33 88 $ 66
Interest cost 45 38 84 76
Expected return on plan assets 0 0 0 0
Recognized net actuarial loss 27 12 40 24
Amortization of prior service cost 23 22 44 45
Settlement loss     0 114
Net Periodic Benefit Cost $ 148 $ 105 $ 256 $ 325
The weighted average assumptions used to determine net periodic benefit cost are as follows:        
Discount Rate (as a percentage) 4.11% 4.30% 4.12% 4.27%
Expected Long-Term Return on Plan Assets (as a percentage) 7.72% 6.90% 7.72% 6.90%
Rate of Compensation Increase (as a percentage) 3.06% 3.03% 3.07% 3.02%
U.S. [Member] | Pension Benefits [Member]        
Components of Net Periodic Benefit Cost:        
Service cost $ 147 $ 181 $ 343 $ 362
Interest cost 302 318 616 636
Expected return on plan assets (328) (322) (663) (644)
Recognized net actuarial loss 108 124 221 248
Amortization of prior service cost 13 14 26 28
Settlement loss     0 0
Net Periodic Benefit Cost $ 242 $ 315 $ 543 $ 630
The weighted average assumptions used to determine net periodic benefit cost are as follows:        
Discount Rate (as a percentage) 4.03% 4.22% 4.03% 4.22%
Expected Long-Term Return on Plan Assets (as a percentage) 5.00% 5.00% 5.00% 5.00%
Rate of Compensation Increase (as a percentage) 3.00% 3.00% 3.00% 3.00%
U.S. [Member] | Other Benefits [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Number of other post-retirement benefit plans | plan 2   2  
Non-U.S. [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Number of subsidiary sponsored defined benefit plans | defined_benefit_plan 3   3  
Number of unfunded defined benefit plans | defined_benefit_plan 2   2  
Non-U.S. [Member] | Pension Benefits [Member]        
Components of Net Periodic Benefit Cost:        
Service cost $ 33 $ 27 $ 65 $ 52
Interest cost 26 26 50 52
Expected return on plan assets (9) (7) (17) (14)
Recognized net actuarial loss 9 10 18 20
Amortization of prior service cost 1 1 2 2
Settlement loss     0 0
Net Periodic Benefit Cost $ 60 $ 57 $ 118 $ 112
The weighted average assumptions used to determine net periodic benefit cost are as follows:        
Discount Rate (as a percentage) 3.47% 3.88% 3.43% 3.89%
Expected Long-Term Return on Plan Assets (as a percentage) 7.72% 6.90% 7.72% 6.90%
Rate of Compensation Increase (as a percentage) 3.44% 2.98% 3.42% 2.99%
Non-U.S. [Member] | Other Benefits [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Number of other post-retirement benefit plans | plan 1   1