Segment Reporting (Tables)

3 Months Ended

Apr. 03, 2020

Segment Reporting [Abstract]

Segment Reporting Information, by Segment

Segment information for the three months ended April 3, 2020 and March 29, 2019 follows:

Revenues

	Three Months Ended
(In thousands)	April 3, 2020		March 29, 2019
Engineering and Other Scientific	$	84,887	$	80,254
Environmental and Health		21,066		18,777
Total revenues	$	105,953	$	99,031

Operating Income

	Three Months Ended
(In thousands)	April 3, 2020		March 29, 2019
Engineering and Other Scientific	$	26,641	$	25,974
Environmental and Health		7,253		6,196
Total segment operating income		33,894		32,170
Corporate operating expense		2,094		(16,416	)
Total operating income	$	35,988	$	15,754

Capital Expenditures

	Three Months Ended
(In thousands)	April 3, 2020		March 29, 2019
Engineering and Other Scientific	$	566	$	1,778
Environmental and Health		62		43
Total segment capital expenditures		628		1,821
Corporate capital expenditures		411		4,520
Total capital expenditures	$	1,039	$	6,341

Depreciation and Amortization

	Three Months Ended
(In thousands)	April 3, 2020		March 29, 2019
Engineering and Other Scientific	$	1,137	$	1,121
Environmental and Health		47		45
Total segment depreciation and    amortization		1,184		1,166
Corporate depreciation and amortization		602		424
Total depreciation and amortization	$	1,786	$	1,590