BUSINESS COMBINATIONS - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	6 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Business Acquisition [Line Items]
Goodwill	$ 1,485,065	$ 1,485,065		$ 1,287,736
Measurement Period Adjustments, Goodwill		218
HEPACO
Business Acquisition [Line Items]
Accounts receivable, including unbilled receivables	70,273	70,273	$ 68,496
Inventories and supplies	384	384	1,574
Prepaid expenses and other current assets	4,540	4,540	5,221
Property, plant and equipment	46,270	46,270	45,453
Permits and other intangibles	130,500	130,500	130,000
Operating lease right-of-use assets	9,385	9,385	9,385
Other long-term assets	2,660	2,660	2,660
Accrued expenses and other current liabilities	(46,978)	(46,978)	(43,966)
Current portion of operating lease liabilities	(2,758)	(2,758)	(2,758)
Operating lease liabilities, less current portion	(6,627)	(6,627)	(6,627)
Deferred tax liabilities	(8,916)	(8,916)	(8,916)
Closure and post-closure liabilities	(1,025)	(1,025)
Other long-term liabilities	(374)	(374)	(374)
Total identifiable net assets	197,334	197,334	200,148
Goodwill	194,845	194,845	195,265
Total purchase price	392,179	392,179	395,413
Measurement Period Adjustments, Accounts receivable, including Unbilled receivables	1,777
Measurement Period Adjustments, Inventories and supplies	(1,190)
Measurement Period Adjustments, Prepaid expenses and other current assets	(681)
Measurement Period Adjustments, Property, plant and equipment	817
Measurement Period Adjustments, Permits and other intangibles	500
Measurement Period Adjustments, Accrued expenses and other current liabilities	(3,012)
Measurement Period Adjustments, Closure and post closure liabilities	(1,025)
Measurement Period Adjustments, Total identifiable net assets	(2,814)
Measurement Period Adjustments, Goodwill	(420)
Measurement Period Adjustments, Total purchase price	(3,234)
Noble Oil Services , Inc. Acquisition
Business Acquisition [Line Items]
Accounts receivable, including unbilled receivables	5,851	5,851	5,693
Inventories and supplies	6,598	6,598	6,817
Prepaid expenses and other current assets	407	407	423
Property, plant and equipment	47,696	47,696	38,914
Permits and other intangibles	14,500	14,500	20,200
Operating lease right-of-use assets	3,615	3,615	3,615
Other long-term assets	92	92	92
Accrued expenses and other current liabilities	(8,893)	(8,893)	(8,990)
Current portion of operating lease liabilities	(1,823)	(1,823)	(1,823)
Operating lease liabilities, less current portion	(1,792)	(1,792)	(1,792)
Closure and post-closure liabilities	(820)	(820)
Total identifiable net assets	65,431	65,431	63,149
Goodwill	3,311	3,311	5,744
Total purchase price	68,742	68,742	$ 68,893
Measurement Period Adjustments, Accounts receivable, including Unbilled receivables	158
Measurement Period Adjustments, Inventories and supplies	(219)
Measurement Period Adjustments, Prepaid expenses and other current assets	(16)
Measurement Period Adjustments, Property, plant and equipment	8,782
Measurement Period Adjustments, Permits and other intangibles	(5,700)
Measurement Period Adjustments, Accrued expenses and other current liabilities	97
Measurement Period Adjustments, Closure and post closure liabilities	(820)
Measurement Period Adjustments, Total identifiable net assets	2,282
Measurement Period Adjustments, Goodwill	(2,433)
Measurement Period Adjustments, Total purchase price	(151)
Thompson Industrial
Business Acquisition [Line Items]
Accounts receivable, including unbilled receivables	25,160	25,160		25,233
Inventories and supplies	228	228		228
Prepaid expenses and other current assets	1,302	1,302		1,302
Property, plant and equipment	26,719	26,719		26,719
Permits and other intangibles	28,900	28,900		28,900
Operating lease right-of-use assets	4,716	4,716		4,716
Other long-term assets	72	72		72
Accrued expenses and other current liabilities	(10,530)	(10,530)		(10,385)
Current portion of operating lease liabilities	(1,653)	(1,653)		(1,653)
Operating lease liabilities, less current portion	(3,063)	(3,063)		(3,063)
Other long-term liabilities	(560)	(560)		(560)
Total identifiable net assets	71,291	71,291		71,509
Goodwill	39,564	39,564		39,346
Total purchase price	$ 110,855	110,855		$ 110,855
Measurement Period Adjustments, Accounts receivable, including Unbilled receivables		(73)
Measurement Period Adjustments, Accrued expenses and other current liabilities		(145)
Measurement Period Adjustments, Total identifiable net assets		(218)
Measurement Period Adjustments, Goodwill		218
Measurement Period Adjustments, Total purchase price		$ 0