BUSINESS COMBINATIONS - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Business Acquisition [Line Items]
Goodwill	$ 1,482,085	$ 1,482,085		$ 1,287,736
Measurement Period Adjustments, Goodwill		218
HEPACO
Business Acquisition [Line Items]
Accounts receivable, including unbilled receivables	71,923	71,923	$ 68,496
Inventories and supplies	546	546	1,574
Prepaid expenses and other current assets	5,127	5,127	5,221
Property, plant and equipment	45,453	45,453	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	(45,062)	(45,062)	(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)
Other long-term liabilities	(374)	(374)	(374)
Total identifiable net assets	201,857	201,857	200,148
Goodwill	193,712	193,712	195,265
Total purchase price	395,569	395,569	395,413
Measurement Period Adjustments, Accounts receivable, including Unbilled receivables	3,427
Measurement Period Adjustments, Inventories and supplies	(1,028)
Measurement Period Adjustments, Prepaid expenses and other current assets	(94)
Measurement Period Adjustments, Permits and other intangibles	500
Measurement Period Adjustments, Accrued expenses and other current liabilities	(1,096)
Measurement Period Adjustments, Total identifiable net assets	1,709
Measurement Period Adjustments, Goodwill	(1,553)
Measurement Period Adjustments, Total purchase price	156
Noble Oil Services , Inc. Acquisition
Business Acquisition [Line Items]
Accounts receivable, including unbilled receivables	5,834	5,834	5,693
Inventories and supplies	6,598	6,598	6,817
Prepaid expenses and other current assets	407	407	423
Property, plant and equipment	42,428	42,428	38,914
Permits and other intangibles	20,200	20,200	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	(8,894)	(8,894)	(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)
Total identifiable net assets	66,665	66,665	63,149
Goodwill	2,077	2,077	5,744
Total purchase price	68,742	68,742	$ 68,893
Measurement Period Adjustments, Accounts receivable, including Unbilled receivables	141
Measurement Period Adjustments, Inventories and supplies	(219)
Measurement Period Adjustments, Prepaid expenses and other current assets	(16)
Measurement Period Adjustments, Property, plant and equipment	3,514
Measurement Period Adjustments, Accrued expenses and other current liabilities	96
Measurement Period Adjustments, Total identifiable net assets	3,516
Measurement Period Adjustments, Goodwill	(3,667)
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