Segment Reporting (Tables)

3 Months Ended

Mar. 29, 2024

Segment Reporting [Abstract]

Segment Reporting Information, by Segment

Segment information for the three months ended March 29, 2024 and March 31, 2023 follows:

Revenues

	Three Months Ended
(In thousands)	March 29, 2024		March 31, 2023
Engineering and Other Scientific	$	121,471	$	117,048
Environmental and Health		23,462		23,261
Total revenues	$	144,933	$	140,309

Operating Income

	Three Months Ended
(In thousands)	March 29, 2024			March 31, 2023
Engineering and Other Scientific	$	48,631		$	43,619
Environmental and Health		8,236			7,554
Total segment operating income		56,867			51,173
Corporate operating expense		(26,154	)		(22,053	)
Total operating income	$	30,713		$	29,120

Certain operating expenses are excluded from the Company’s measure of segment operating income. These expenses include costs associated with its human resources, finance, information technology, and business development groups; the deferred compensation expense/benefit due to the change in value of assets associated with its deferred compensation plan; stock-based compensation associated with restricted stock unit and stock option awards; and the change in its allowance for contract losses and doubtful accounts.

Capital Expenditures

	Three Months Ended
(In thousands)	March 29, 2024		March 31, 2023
Engineering and Other Scientific	$	417	$	1,408
Environmental and Health		29		95
Total segment capital expenditures		446		1,503
Corporate capital expenditures		1,063		4,358
Total capital expenditures	$	1,509	$	5,861

Certain capital expenditures associated with the Company’s corporate cost centers and the related depreciation are excluded from the Company’s segment information.

Depreciation and Amortization

	Three Months Ended
(In thousands)	March 29, 2024		March 31, 2023
Engineering and Other Scientific	$	1,628	$	1,306
Environmental and Health		49		48
Total segment depreciation and amortization		1,677		1,354
Corporate depreciation and amortization		647		634
Total depreciation and amortization	$	2,324	$	1,988