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Acquisitions - Estimated Fair Values of Identifiable Intangible Assets and Related Weighted Average Amortization (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value		$ 115,500
Acquisitions 2023
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 115,515
Weighted Average Amortization Period in Years	5 years 6 months
Acquisitions 2023 | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 83,180
Weighted Average Amortization Period in Years	4 years 7 months 6 days
Acquisitions 2023 | Backlog
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 11,564
Weighted Average Amortization Period in Years	9 months 18 days
Acquisitions 2023 | Trade names
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 13,797
Weighted Average Amortization Period in Years	15 years
Acquisitions 2023 | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 6,974
Weighted Average Amortization Period in Years	5 years

X

- 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
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482665/350-30-50-1

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483154/926-20-50-5

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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
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482665/350-30-50-1

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