Revenue (Tables)

9 Months Ended

Sep. 30, 2025

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue and Revenue by Contract Type

The following tables disaggregate revenue by segment, 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 and nine months ended September 30, 2025 and 2024.


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2025		2024		2025		2024
Civil segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	466,226	$	341,827	$	1,240,094	$	883,930
Military facilities	86,696		110,214		289,383		333,137
Bridges(a)	122,081		1,539		278,015		91,519
Detention facilities	31,818		22,216		116,531		29,088
Power and energy	40,288		34,456		108,956		96,382
Commercial and industrial sites	19,745		31,463		67,053		107,583
Other	3,380		4,180		14,430		22,909
Total Civil segment revenue	$	770,234	$	545,895	$	2,114,462	$	1,564,548


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2025		2024		2025		2024
Building segment revenue by end market:
Healthcare facilities	$	224,392	$	160,904	$	672,366	$	408,845
Detention facilities	99,129		49,762		263,044		108,302
Government	28,864		61,278		151,985		247,467
Education facilities	25,578		74,624		110,329		226,973
Mass transit (includes transportation projects)	25,615		64,861		90,843		183,359
Other	15,086		24,286		51,963		90,577
Total Building segment revenue	$	418,664	$	435,715	$	1,340,530	$	1,265,523


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2025		2024		2025		2024
Specialty Contractors segment revenue by end market:
Mass transit (includes certain transportation and tunneling projects)	$	75,648	$	22,674	$	174,416	$	119,626
Commercial and industrial facilities	39,628		27,811		105,394		86,234
Multi-unit residential	27,941		16,623		76,427		61,647
Healthcare facilities	27,424		15,566		71,881		46,994
Government	20,071		13,815		63,883		54,839
Detention facilities	12,714		209		25,096		629
Water	4,493		10,544		20,789		39,462
Education facilities	5,812		8,566		13,937		22,828
Other	12,731		(14,602)		28,859		(3,057)
Total Specialty Contractors segment revenue	$	226,462	$	101,206	$	580,682	$	429,202


	Three Months Ended September 30, 2025								Three Months Ended September 30, 2024
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies(a)	$	601,597	$	181,817	$	136,577	$	919,991	$	325,543	$	241,584	$	43,114	$	610,241
Federal agencies	117,852		23,721		6,002		147,575		137,110		40,616		(4,090)		173,636
Private owners	50,785		213,126		83,883		347,794		83,242		153,515		62,182		298,939
Total revenue	$	770,234	$	418,664	$	226,462	$	1,415,360	$	545,895	$	435,715	$	101,206	$	1,082,816


	Nine Months Ended September 30, 2025								Nine Months Ended September 30, 2024
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by customer type:
State and local agencies(a)	$	1,589,534	$	613,772	$	319,666	$	2,522,972	$	955,157	$	736,220	$	203,194	$	1,894,571
Federal agencies	353,606		95,186		11,168		459,960		369,876		132,753		(3,312)		499,317
Private owners	171,322		631,572		249,848		1,052,742		239,515		396,550		229,320		865,385
Total revenue	$	2,114,462	$	1,340,530	$	580,682	$	4,035,674	$	1,564,548	$	1,265,523	$	429,202	$	3,259,273


	Three Months Ended September 30, 2025								Three Months Ended September 30, 2024
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price(a)	$	636,390	$	168,226	$	174,159	$	978,775	$	446,208	$	211,625	$	73,870	$	731,703
Guaranteed maximum price	82		228,445		11,417		239,944		420		205,184		1,640		207,244
Unit price	115,858		—		21,170		137,028		90,090		—		16,579		106,669
Cost plus fee and other	17,904		21,993		19,716		59,613		9,177		18,906		9,117		37,200
Total revenue	$	770,234	$	418,664	$	226,462	$	1,415,360	$	545,895	$	435,715	$	101,206	$	1,082,816


	Nine Months Ended September 30, 2025								Nine Months Ended September 30, 2024
(in thousands)	Civil		Building		Specialty Contractors		Total		Civil		Building		Specialty Contractors		Total
Revenue by contract type:
Fixed price(a)	$	1,822,443	$	546,460	$	453,316	$	2,822,219	$	1,330,549	$	567,821	$	349,718	$	2,248,088
Guaranteed maximum price	304		703,520		24,235		728,059		554		583,127		3,200		586,881
Unit price	244,170		—		57,724		301,894		199,257		—		57,404		256,661
Cost plus fee and other	47,545		90,550		45,407		183,502		34,188		114,575		18,880		167,643
Total revenue	$	2,114,462	$	1,340,530	$	580,682	$	4,035,674	$	1,564,548	$	1,265,523	$	429,202	$	3,259,273

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(a)The three and nine-month periods ended September 30, 2024 include the negative impact of a $101.6 million adjustment related to an adverse arbitration ruling on a completed Civil segment bridge project in California, of which $79.4 million was a reversal of previously recognized revenue. Refer to Note 19, Business Segments, for additional details.