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Other Long Term Liabilities (Details) - USD ($)
$ in Thousands
Oct. 02, 2020
Dec. 31, 2019
Other Liabilities Disclosure [Abstract]    
Finance lease obligations $ 6,052 $ 14,845
Accrued pension liabilities 289 1,473
Accrued contingent considerations 10,238 16,504
Other 3,009 4,065
Total $ 19,588 $ 36,887