Goodwill and Intangible Assets - Schedule of Amounts Related to Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Beginning balance	$ 323,868
Goodwill acquired during the year	40,786
Acquisitions measurement period adjustments (Note 8)		$ 200
Foreign currency translation impact	(46)
Ending balance	364,449	323,868
Prior Year Acquisitions
Goodwill [Line Items]
Acquisitions measurement period adjustments (Note 8)	(159)
Assessment, Permitting and Response
Goodwill [Line Items]
Beginning balance	185,116
Ending balance	184,946	185,116
Assessment, Permitting and Response | Prior Year Acquisitions
Goodwill [Line Items]
Acquisitions measurement period adjustments (Note 8)	(170)
Measurements and Analysis
Goodwill [Line Items]
Beginning balance	86,205
Goodwill acquired during the year	7,691
Ending balance	93,890	86,205
Measurements and Analysis | Prior Year Acquisitions
Goodwill [Line Items]
Acquisitions measurement period adjustments (Note 8)	(6)
Remediation and Reuse Segment
Goodwill [Line Items]
Beginning balance	52,547
Goodwill acquired during the year	33,095
Foreign currency translation impact	(46)
Ending balance	85,613	$ 52,547
Remediation and Reuse Segment | Prior Year Acquisitions
Goodwill [Line Items]
Acquisitions measurement period adjustments (Note 8)	$ 17