Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)
Segment Information
Number of reportable segments | segment			2
Revenue	$ 1,017,948	$ 713,895	$ 1,903,164	$ 1,383,656
Gross Profit	174,992	126,455	328,136	249,924
Operating | Mechanical Services Segment
Segment Information
Revenue	776,757	611,796	1,459,268	1,177,416
Gross Profit	138,605	112,405	265,333	220,533
Operating | Electrical Services Industry
Segment Information
Revenue	241,191	102,099	443,896	206,240
Gross Profit	$ 36,387	$ 14,050	$ 62,803	$ 29,391