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Accrued Expenses (Details) - USD ($)
$ in Thousands
Apr. 01, 2023
Dec. 31, 2022
Accrued Liabilities, Current [Abstract]    
Compensation and related expenses $ 83,706 $ 138,728
Performance awards 10,703 9,359
Direct project accruals 2,095 1,783
Other 7,909 5,994
Total accrued expenses 104,413 155,864
Compensation and related expenses    
Accrued bonuses $ 49,500 $ 116,100