Segment Reporting (Tables)

3 Months Ended

Apr. 04, 2025

Segment Reporting [Abstract]

Segment Reporting Information, by Segment

Segment information for the three months ended April 4, 2025 and March 29, 2024 follows:

Revenues

	Three Months Ended
(In thousands)	April 4, 2025		March 29, 2024
Engineering and Other Scientific	$	122,135	$	121,471
Environmental and Health		23,372		23,462
Total revenues	$	145,507	$	144,933

Compensation and related expenses

	Three Months Ended
(In thousands)	April 4, 2025		March 29, 2024
Engineering and Other Scientific	$	57,248	$	57,735
Environmental and Health		12,448		12,316
Total segment compensation and related expenses		69,696		70,051
Corporate compensation and related expenses		6,207		20,276
Total compensation and related expenses	$	75,903	$	90,327

Operating Income

	Three Months Ended
(In thousands)	April 4, 2025			March 29, 2024
Engineering and Other Scientific	$	45,113		$	48,631
Environmental and Health		8,698			8,236
Total segment operating income		53,811			56,867
Corporate operating expense		(9,379	)		(26,154	)
Total operating income	$	44,432		$	30,713

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)	April 4, 2025		March 29, 2024
Engineering and Other Scientific	$	475	$	417
Environmental and Health		62		29
Total segment capital expenditures		537		446
Corporate capital expenditures		715		1,063
Total capital expenditures	$	1,252	$	1,509

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)	April 4, 2025		March 29, 2024
Engineering and Other Scientific	$	1,826	$	1,628
Environmental and Health		47		49
Total segment depreciation and amortization		1,873		1,677
Corporate depreciation and amortization		619		647
Total depreciation and amortization	$	2,492	$	2,324