Segment information for the three months ended April 1, 2022 and April 2, 2021 follows:

	Three Months Ended
(In thousands)	April 1, 2022		April 2, 2021
Engineering and Other Scientific	$	104,615	$	93,609
Environmental and Health		23,863		22,872
Total revenues	$	128,478	$	116,481

	Three Months Ended
(In thousands)	April 1, 2022			April 2, 2021
Engineering and Other Scientific	$	38,490		$	34,057
Environmental and Health		7,835			7,918
Total segment operating income		46,325			41,975
Corporate operating expense		(9,608	)		(17,917	)
Total operating income	$	36,717		$	24,058

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.

	Three Months Ended
(In thousands)	April 1, 2022		April 2, 2021
Engineering and Other Scientific	$	564	$	604
Environmental and Health		50		49
Total segment capital expenditures		614		653
Corporate capital expenditures		2,181		1,653
Total capital expenditures	$	2,795	$	2,306

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

	Three Months Ended
(In thousands)	April 1, 2022		April 2, 2021
Engineering and Other Scientific	$	1,039	$	1,010
Environmental and Health		42		46
Total segment depreciation and amortization		1,081		1,056
Corporate depreciation and amortization		608		600
Total depreciation and amortization	$	1,689	$	1,656