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Other Long Term Liabilities (Details) - USD ($)
$ in Thousands
Oct. 01, 2021
Dec. 31, 2020
Other Liabilities Disclosure [Abstract]    
Finance lease obligations $ 5,461 $ 5,908
Accrued pension liabilities 326 1,511
Accrued contingent considerations 3,605 7,276
Other 2,352 2,471
Total $ 11,744 $ 17,166