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Accrued Expenses (Tables)
3 Months Ended
Apr. 01, 2023
Accrued Liabilities, Current [Abstract]  
Schedule of accrued expenses
Accrued expenses consist of the following (in thousands):
April 1,
2023
December 31,
2022
Compensation and related expenses$83,706 $138,728 
Performance awards10,703 9,359 
Direct project accruals2,095 1,783 
Other7,909 5,994 
Total accrued expenses$104,413 $155,864