Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2022

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						Nine Months Ended
	September 30, 2022			October 1, 2021			September 30, 2022			October 1, 2021
Engineering & Other Scientific		64	%		62	%		63	%		62	%
Environmental and Health		14	%		16	%		16	%		17	%
Total time and materials revenues		78	%		78	%		79	%		79	%

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

	Three Months Ended						Nine Months Ended
	September 30, 2022			October 1, 2021			September 30, 2022			October 1, 2021
Engineering & Other Scientific		21	%		21	%		20	%		20	%
Environmental and Health		1	%		1	%		1	%		1	%
Total fixed price revenues		22	%		22	%		21	%		21	%