Segment Information (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Segment Information
Number of reportable segments \| segment	2
Revenue	$ 885,216	$ 669,761
Gross Profit	153,144	123,469
Capital Expenditures	9,192	4,812
Total Assets	2,308,413		$ 2,209,114
Operating \| Mechanical Services Segment
Segment Information
Revenue	682,511	565,620
Gross Profit	126,728	108,128
Operating \| Electrical Services Industry
Segment Information
Revenue	202,705	104,141
Gross Profit	$ 26,416	$ 15,341

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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