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Amount of intangible assets, including goodwill, acquired at the acquisition date.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Acquisitions (Details) - USD ($) $ in Thousands					3 Months Ended
Acquisitions (Details) - USD ($) $ in Thousands	Apr. 01, 2022	Dec. 31, 2021	Dec. 01, 2021	Aug. 01, 2021	Mar. 31, 2021	Sep. 30, 2022	Dec. 31, 2020
Recognized amounts of identifiable assets acquired and liabilities assumed:
Goodwill		$ 592,114				$ 611,039	$ 464,392
Atlantic
Consideration transferred:
Fair value of consideration transferred	$ 48,100
Cash paid at closing	34,100
Notes issued to former owners	$ 5,300
MEP Holdings
Consideration transferred:
Fair value of consideration transferred		57,300
Cash paid at closing		45,200
Notes issued to former owners		7,600
Mechanical Contractor Kentucky
Consideration transferred:
Fair value of consideration transferred		20,500
Mechanical Contractor Indiana
Consideration transferred:
Fair value of consideration transferred		$ 4,700
Ivey
Consideration transferred:
Fair value of consideration transferred			$ 79,100
Cash paid at closing			64,100
Notes issued to former owners			8,000
Other amount payable			$ 400
Amteck
Consideration transferred:
Fair value of consideration transferred				$ 138,900
Cash paid at closing				107,400
Notes issued to former owners				10,000
Working capital adjustment				8,600
Identifiable intangible assets				113,100
Amteck \| Contingent earn-out obligations
Consideration transferred:
Estimated fair value of contingent earn-out payments				$ 12,900
Mechanical Contractor Utah
Consideration transferred:
Fair value of consideration transferred					$ 18,100