Segment Information - Components of Segment Revenues and Segment Adjusted EBITDA (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Segment Revenues	$ 544,416	$ 546,413	$ 328,243
Segment Adjusted EBITDA	68,450	77,642	54,476
Operating Segments
Segment Reporting Information [Line Items]
Segment Revenues	544,416	546,413	328,243
Segment Adjusted EBITDA	99,662	107,724	72,532
Assessment, Permitting and Response | Operating Segments
Segment Reporting Information [Line Items]
Segment Revenues	187,234	261,865	98,521
Segment Adjusted EBITDA	37,458	57,128	24,208
Measurements and Analysis | Operating Segments
Segment Reporting Information [Line Items]
Segment Revenues	172,432	153,208	151,557
Segment Adjusted EBITDA	31,588	31,270	39,386
Remediation and Reuse | Operating Segments
Segment Reporting Information [Line Items]
Segment Revenues	184,750	131,340	78,165
Segment Adjusted EBITDA	30,616	19,326	8,938
Corporate and Other
Segment Reporting Information [Line Items]
Segment Adjusted EBITDA	$ (31,212)	$ (30,082)	$ (18,056)