Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment reporting information
Revenue	$ 1,284,128	$ 913,245	$ 3,091,461	$ 2,613,184
% of Total Revenue	100.00%	100.00%	100.00%	100.00%
Gross Profit	$ 154,907	$ 127,436	$ 303,501	$ 320,643
% of Revenue	12.10%	14.00%	9.80%	12.30%
Utilities
Segment reporting information
Revenue	$ 613,008	$ 454,654	$ 1,447,857	$ 1,215,087
% of Total Revenue	47.70%	49.80%	46.80%	46.50%
Gross Profit	$ 78,046	$ 63,715	$ 140,755	$ 134,280
% of Revenue	12.70%	14.00%	9.70%	11.10%
Energy/Renewables
Segment reporting information
Revenue	$ 600,444	$ 351,026	$ 1,445,843	$ 1,038,900
% of Total Revenue	46.80%	38.40%	46.80%	39.80%
Gross Profit	$ 80,135	$ 35,926	$ 173,209	$ 111,825
% of Revenue	13.30%	10.20%	12.00%	10.80%
Pipeline
Segment reporting information
Revenue	$ 70,676	$ 107,565	$ 197,761	$ 359,197
% of Total Revenue	5.50%	11.80%	6.40%	13.70%
Gross Profit	$ (3,274)	$ 27,795	$ (10,463)	$ 74,538
% of Revenue	(4.60%)	25.80%	(5.30%)	20.80%