Goodwill and Intangible Assets - Schedule of Amounts Related to Goodwill (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($)
Goodwill [Line Items]
Beginning balance	$ 311,944
Goodwill acquired during the period	4,024
Acquisitions measurement period adjustments	205
Ending balance	316,173
Assessment, Permitting and Response
Goodwill [Line Items]
Beginning balance	176,541
Goodwill acquired during the period	3,874
Acquisitions measurement period adjustments	(91)
Ending balance	180,324
Measurement and Analysis
Goodwill [Line Items]
Beginning balance	83,770
Acquisitions measurement period adjustments	296
Ending balance	84,066
Remediation and Reuse Segment
Goodwill [Line Items]
Beginning balance	51,633
Goodwill acquired during the period	150
Ending balance	$ 51,783

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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