Revenue Recognition (Tables)

6 Months Ended

Jul. 03, 2020

Revenue Recognition [Abstract]

Summary of Revenues

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

	Three Months Ended						Six Months Ended
	July 3, 2020			June 28, 2019			July 3, 2020			June 28, 2019
Engineering & other scientific		60	%		67	%		63	%		67	%
Environmental and health		21	%		18	%		20	%		18	%
Total time and materials revenues		81	%		85	%		83	%		85	%

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

	Three Months Ended						Six Months Ended
	July 3, 2020			June 28, 2019			July 3, 2020			June 28, 2019
Engineering & other scientific		18	%		14	%		16	%		14	%
Environmental and health		1	%		1	%		1	%		1	%
Total fixed price revenues		19	%		15	%		17	%		15	%