Goodwill and Identifiable Intangible Assets, Net (Tables)

6 Months Ended

Jun. 30, 2022

Goodwill and Identifiable Intangible Assets, Net

Schedule of changes in the carrying amount of goodwill

The changes in the carrying amount of goodwill are as follows (in thousands):

	Mechanical Services		Electrical Services
	Segment		Segment		Total
Balance at December 31, 2020	$	307,448	$	156,944	$	464,392
Acquisitions and purchase price adjustments (See Note 5)		52,771		74,951		127,722
Impact of segment reorganization		1,101		(1,101)		—
Balance at December 31, 2021		361,320		230,794		592,114
Acquisitions and purchase price adjustments (See Note 5)		1,833		17,053		18,886
Balance at June 30, 2022	$	363,153	$	247,847	$	611,000

Schedule of future amortization expense of identifiable intangible assets

At June 30, 2022, future amortization expense of identifiable intangible assets is as follows (in thousands):

Year ending December 31—
2022 (remainder of the year)	$	22,637
2023		36,252
2024		34,063
2025		31,876
2026		31,032
Thereafter		140,678
Total	$	296,538