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Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Other Post-Retirement Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost $ 130 $ 117 $ 103
Interest cost 156 147 163
Expected return on plan assets (2) (2) (2)
Recognized net actuarial loss 50 30 22
Amortization of prior service cost 88 88 88
Settlement loss 114 0 0
Net Periodic Benefit Cost 536 380 374
U.S. Pension Benefits | Pension benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 723 842 850
Interest cost 1,273 1,229 1,286
Expected return on plan assets (1,288) (1,421) (1,480)
Recognized net actuarial loss 498 508 315
Amortization of prior service cost 55 55 55
Settlement loss 0 0 0
Net Periodic Benefit Cost 1,261 1,213 1,026
Non-U.S. Pension Benefits | Pension benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 102 105 193
Interest cost 107 102 138
Expected return on plan assets (25) (40) (44)
Recognized net actuarial loss 39 38 18
Amortization of prior service cost 4 4 6
Settlement loss 0 0 0
Net Periodic Benefit Cost $ 227 $ 209 $ 311