Segment Reporting (Tables)

3 Months Ended

Mar. 29, 2019

Segment Reporting [Abstract]

Segment Reporting Information, by Segment

Segment information for the three months ended March 29, 2019 and March 30, 2018 follows:

Revenues
	Three Months Ended
(In thousands)	March 29, 2019		March 30, 2018
Engineering and Other Scientific	$	80,254	$	77,047
Environmental and Health		18,777		19,410
Total revenues	$	99,031	$	96,457

Operating Income
	Three Months Ended
(In thousands)	March 29, 2019			March 30, 2018
Engineering and Other Scientific	$	25,974		$	25,913
Environmental and Health		6,196			6,624
Total segment operating income		32,170			32,537
Corporate operating expense		(16,416	)		(10,939	)
Total operating income	$	15,754		$	21,598

Capital Expenditures
	Three Months Ended
(In thousands)	March 29, 2019		March 30, 2018
Engineering and Other Scientific	$	1,778	$	813
Environmental and Health		43		51
Total segment capital expenditures		1,821		864
Corporate capital expenditures		4,520		5,946
Total capital expenditures	$	6,341	$	6,810

Depreciation and Amortization
	Three Months Ended
(In thousands)	March 29, 2019		March 30, 2018
Engineering and Other Scientific	$	1,121	$	1,095
Environmental and Health		45		39
Total segment depreciation and amortization		1,166		1,134
Corporate depreciation and amortization		424		421
Total depreciation and amortization	$	1,590	$	1,555