Revenue (Tables)

3 Months Ended

Mar. 31, 2025

Revenue from Contract with Customer [Abstract]

The following tables disaggregate revenue by end market, customer type and contract type, which the Company believes best depict how the nature, amount, timing and uncertainty of its revenue and cash flows are affected by economic factors for the three months ended March 31, 2025 and 2024.


	Three Months Ended March 31,
(in thousands)	2025		2024
Civil segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	353,185	$	252,516
Military facilities	101,128		105,144
Bridges	51,851		27,672
Detention facilities	45,987		373
Power and energy	30,611		26,198
Commercial and industrial sites	22,651		39,490
Other	4,628		20,772
Total Civil segment revenue	$	610,041	$	472,165


	Three Months Ended March 31,
(in thousands)	2025		2024
Building segment revenue by end market:
Healthcare facilities	$	214,548	$	111,987
Detention facilities	88,004		31,648
Government	60,015		98,963
Education facilities	47,990		68,159
Mass transit (includes transportation projects)	29,510		61,175
Other	19,717		40,010
Total Building segment revenue	$	459,784	$	411,942


	Three Months Ended March 31,
(in thousands)	2025		2024
Specialty Contractors segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	42,595	$	48,126
Commercial and industrial facilities	32,190		28,210
Government	30,096		22,953
Multi-unit residential	25,569		24,726
Healthcare facilities	20,574		16,710
Water	10,785		14,216
Other	14,999		9,939
Total Specialty Contractors segment revenue	$	176,808	$	164,880


	Three Months Ended March 31, 2025								Three Months Ended March 31, 2024
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies	$	441,110	$	221,175	$	91,183	$	753,468	$	283,995	$	246,519	$	76,953	$	607,467
Federal agencies	112,079		36,644		3,117		151,840		113,454		46,052		439		159,945
Private owners	56,852		201,965		82,508		341,325		74,716		119,371		87,488		281,575
Total revenue	$	610,041	$	459,784	$	176,808	$	1,246,633	$	472,165	$	411,942	$	164,880	$	1,048,987


	Three Months Ended March 31, 2025								Three Months Ended March 31, 2024
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price	$	538,414	$	194,388	$	143,245	$	876,047	$	422,720	$	170,146	$	139,503	$	732,369
Guaranteed maximum price	181		235,615		5,359		241,155		46		187,300		623		187,969
Unit price	38,017		—		16,690		54,707		33,854		—		20,545		54,399
Cost plus fee and other	33,429		29,781		11,514		74,724		15,545		54,496		4,209		74,250
Total revenue	$	610,041	$	459,784	$	176,808	$	1,246,633	$	472,165	$	411,942	$	164,880	$	1,048,987