Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Amounts Related to Goodwill

Amounts related to goodwill as of December 31, are as follows:

	Assessment, Permitting and Response		Measurements and Analysis		Remediation and Reuse		Total
Balance as of December 31, 2020	$	162,156	$	69,054	$	43,457	$	274,667
Goodwill acquired during the year		14,385		14,716		8,176		37,277
Balance as of December 31, 2021	$	176,541	$	83,770	$	51,633	$	311,944

Schedule of Amounts Related to Finite-Lived Intangible Assets

Amounts related to finite-lived intangible assets as of December 31, are as follows:

2021	Estimated Useful Life	Gross Balance		Accumulated Amortization		Total Intangible Assets—Net
Finite lived intangible assets
Customer relationships	2–15 years	$	196,323	$	74,010	$	122,313
Covenants not to compete	4–5 years		32,622		25,113		7,509
Trade names	1–5 years		20,403		15,139		5,264
Proprietary software	3–5 years		22,077		11,155		10,922
Patent	16 years		17,479		2,490		14,989
Total other intangible assets—net		$	288,904	$	127,907	$	160,997

2020	Estimated Useful Life	Gross Balance		Accumulated Amortization		Total Intangible Assets—Net
Finite lived intangible assets
Customer relationships	7–15 years	$	164,782	$	53,446	$	111,336
Covenants not to compete	4–5 years		29,942		21,469		8,473
Trade names	1–5 years		16,938		12,849		4,089
Proprietary software	3–5 years		21,007		6,132		14,875
Patent	16 years		17,479		1,398		16,081
Total other intangible assets—net		$	250,148	$	95,294	$	154,854

Schedule of Future Amortization Expense

Future amortization expense is estimated to be as follows for each of the five following years and thereafter ending December 31:

2022		32,185
2023		26,036
2024		21,978
2025		15,457
2026 and thereafter		65,341
Total	$	160,997