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Deferred Compensation and Other Benefits - Schedule of Change in Fair Value of Plan Assets for NDBP (Details) - NDBP [Member] - USD ($)
$ in Thousands
6 Months Ended
Jun. 28, 2019
Jun. 29, 2018
Reconciliation of Fair Value of Plan Assets    
Fair value of plan assets at beginning of period $ 17,403 $ 17,575
Return on plan assets 308 323
Employer contributions 554 593
Benefits paid (408) (435)
Effect of exchange rate changes (101) (502)
Fair value of plan assets at end of quarter $ 17,756 $ 17,554