Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2023

Revenue Recognition [Abstract]

Summary of Percent of Revenues

The following table discloses the percentage of the Company’s revenue generated from time and materials contracts:

	Three Months Ended
	March 31, 2023			April 1, 2022
Engineering & other scientific		64	%		62	%
Environmental and health		16	%		17	%
Total time and materials revenues		80	%		79	%

The following table discloses the percentage of the Company’s revenue generated from fixed price contracts:

	Three Months Ended
	March 31, 2023			April 1, 2022
Engineering & other scientific		19	%		20	%
Environmental and health		1	%		1	%
Total fixed price revenues		20	%		21	%