Goodwill and Intangible Assets - Schedule of Amounts Related to Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($)
Goodwill [Line Items]
Beginning balance	$ 311,944
Goodwill acquired during the period	7,072
Acquisitions measurement period adjustments	(603)
Ending balance	318,413
Assessment, Permitting and Response
Goodwill [Line Items]
Beginning balance	176,541
Goodwill acquired during the period	4,764
Acquisitions measurement period adjustments	(899)
Ending balance	180,406
Measurement and Analysis
Goodwill [Line Items]
Beginning balance	83,770
Goodwill acquired during the period	2,158
Acquisitions measurement period adjustments	296
Ending balance	86,224
Remediation and Reuse Segment
Goodwill [Line Items]
Beginning balance	51,633
Goodwill acquired during the period	150
Ending balance	$ 51,783