Revenue Recognition (Tables)

9 Months Ended

Oct. 01, 2021

Revenue Recognition [Abstract]

Summary 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
	October 1, 2021			October 2, 2020			October 1, 2021			October 2, 2020
Engineering & Other Scientific		62	%		59	%		62	%		62	%
Environmental and Health		16	%		19	%		17	%		20	%
Total time and materials revenues		78	%		78	%		79	%		82	%

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

	Three Months Ended						Nine Months Ended
	October 1, 2021			October 2, 2020			October 1, 2021			October 2, 2020
Engineering & Other Scientific		21	%		21	%		20	%		17	%
Environmental and Health		1	%		1	%		1	%		1	%
Total fixed price revenues		22	%		22	%		21	%		18	%