Segment Information (Tables)

12 Months Ended

Dec. 31, 2019

Segment Information

Summary of information about reportable segments

	Mechanical Services		Electrical Services		Corporate		Consolidated
Total Assets at December 31, 2019	$	1,056,609	$	372,254	$	76,149	$	1,505,012
Total Assets at December 31, 2018	$	970,995	$	23,078	$	68,491	$	1,062,564
	Year Ended December 31, 2019
	Mechanical Services		Electrical Services		Corporate		Consolidated
Revenue	$	2,251,560	$	363,717	$	—	$	2,615,277
Gross Profit	$	465,144	$	36,799	$	—	$	501,943
Capital Expenditures	$	27,933	$	1,504	$	2,314	$	31,750
	Year Ended December 31, 2018
	Mechanical Services		Electrical Services		Corporate		Consolidated
Revenue	$	2,176,223	$	6,656	$	—	$	2,182,879
Gross Profit	$	444,960	$	1,319	$	—	$	446,279
Capital Expenditures	$	25,945	$	57	$	1,266	$	27,268
	Year Ended December 31, 2017
	Mechanical Services		Electrical Services		Corporate		Consolidated
Revenue	$	1,787,922	$	—	$	—	$	1,787,922
Gross Profit	$	366,281	$	—	$	—	$	366,281
Capital Expenditures	$	34,587	$	—	$	880	$	35,467