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Acquisition - Summary of identifiable intangible assets (Details) - Powerline Plus Companies $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($)
Acquired Indefinite and Finite-Lived Intangible Assets [Line Items]
Amortizable Intangible Assets	$ 43,764
Total intangible assets	$ 49,735
Weighted Average Amortization Period at Acquisition Date	14 years 10 months 24 days
Customer relationships
Acquired Indefinite and Finite-Lived Intangible Assets [Line Items]
Amortizable Intangible Assets	$ 39,757
Weighted Average Amortization Period at Acquisition Date	15 years
Backlog
Acquired Indefinite and Finite-Lived Intangible Assets [Line Items]
Amortizable Intangible Assets	$ 4,007
Weighted Average Amortization Period at Acquisition Date	1 year
Trade name
Acquired Indefinite and Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets	$ 5,971

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Acquired Finite And Indefinite-Lived Intangible Assets

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Finite And Indefinite-Lived Intangible Assets Acquired

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
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Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

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