BUSINESS COMBINATIONS - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Goodwill	$ 1,477,199	$ 1,287,736		$ 1,246,878
Measurement Period Adjustments, Goodwill	218	360
HEPACO
Business Acquisition [Line Items]
Accounts receivable, including unbilled receivables	69,072
Inventories and supplies	384
Prepaid expenses and other current assets	4,383
Property, plant and equipment	47,125
Permits and other intangibles	130,500
Operating lease right-of-use assets	9,385
Other long-term assets	5,712
Accounts payable	(30,602)
Accrued expenses and other current liabilities	(16,005)
Current portion of operating lease liabilities	(2,758)
Operating lease liabilities, less current portion	(6,627)
Closure and post-closure liabilities	(2,492)
Remedial liabilities	(2,435)
Other long-term liabilities	(374)
Total identifiable net assets	205,268
Goodwill	186,911
Total purchase price	392,179
Noble Oil Services , Inc. Acquisition
Business Acquisition [Line Items]
Accounts receivable, including unbilled receivables	5,855
Inventories and supplies	6,598
Prepaid expenses and other current assets	408
Property, plant and equipment	55,615
Permits and other intangibles	14,500
Operating lease right-of-use assets	3,615
Other long-term assets	92
Accounts payable	(7,752)
Accrued expenses and other current liabilities	(1,145)
Current portion of operating lease liabilities	(1,823)
Operating lease liabilities, less current portion	(1,792)
Closure and post-closure liabilities	(8,929)
Remedial liabilities	(2,757)
Total identifiable net assets	62,485
Goodwill	6,257
Total purchase price	68,742
Thompson Industrial
Business Acquisition [Line Items]
Accounts receivable, including unbilled receivables	25,160	25,233
Inventories and supplies	228	228
Prepaid expenses and other current assets	1,302	1,302
Property, plant and equipment	26,719	26,719
Permits and other intangibles	28,900	28,900
Operating lease right-of-use assets	4,716	4,716
Other long-term assets	72	72
Accounts payable	(7,240)	(7,185)
Accrued expenses and other current liabilities	(3,290)	(3,200)
Current portion of operating lease liabilities	(1,653)	(1,653)
Operating lease liabilities, less current portion	(3,063)	(3,063)
Other long-term liabilities	(560)	(560)
Total identifiable net assets	71,291	71,509
Goodwill	39,564	39,346
Total purchase price	110,855	$ 110,855
Measurement Period Adjustments, Accounts receivable	(73)
Measurement Period Adjustments, Accounts payable	(55)
Measurement Period Adjustments, Accrued expenses and other current liabilities	(90)
Measurement Period Adjustments, Total identifiable net assets	(218)
Measurement Period Adjustments, Goodwill	218
Measurement Period Adjustments, Total purchase price	$ 0
June 17, 2022 Acquisition
Business Acquisition [Line Items]
Accounts receivable, including unbilled receivables			$ 1,089
Inventories and supplies			5,745
Prepaid expenses and other current assets			144
Property, plant and equipment			22,231
Permits and other intangibles			23,500
Operating lease right-of-use assets			585
Other long-term assets			13
Accrued expenses and other current liabilities			(3,375)
Current portion of operating lease liabilities			(186)
Operating lease liabilities, less current portion			(399)
Other long-term liabilities			(2,681)
Total identifiable net assets			46,666
Goodwill			32,212
Total purchase price			$ 78,878