BUSINESS COMBINATIONS (Tables)

12 Months Ended

Dec. 31, 2022

Business Combination and Asset Acquisition [Abstract]

Schedule of Allocation of Purchase Price

The following table summarizes the preliminary determination and recognition of assets acquired and liabilities assumed (in thousands):

	At Acquisition Date As Reported December 31, 2022
Accounts receivable	$	1,111
Inventories and supplies	5,816
Prepaid expenses and other current assets	144
Property, plant and equipment	19,605
Permits and other intangibles	23,500
Operating lease right-of-use assets	585
Other non-current assets	13
Current liabilities	(3,271)
Current portion of operating lease liabilities	(186)
Operating lease liabilities, less current portion	(399)
Other long-term liabilities	(55)
Total identifiable net assets	46,863
Goodwill	32,015
Total purchase price	$	78,878

The following table summarizes the final determination and recognition of assets acquired and liabilities assumed (in thousands):

	At Acquisition Date As Reported December 31, 2021		Measurement Period Adjustments		Final Allocation at Acquisition Date As Reported December 31, 2022
Accounts receivable, including unbilled receivables	$	131,924	$	(408)	$	131,516
Inventories and supplies	3,162		—		3,162
Prepaid expenses and other current assets	16,016		275		16,291
Property, plant and equipment	313,540		857		314,397
Other intangibles	289,000		—		289,000
Operating lease right-of-use assets	34,347		68		34,415
Other non-current assets	1,045		(83)		962
Current liabilities	(115,704)		(3,150)		(118,854)
Current portion of operating lease liabilities	(11,659)		382		(11,277)
Operating lease liabilities, less current portion	(26,128)		(216)		(26,344)
Deferred tax liabilities	(85,908)		5,522		(80,386)
Other long-term liabilities	(2,685)		(1,485)		(4,170)
Total identifiable net assets	546,950		1,762		548,712
Goodwill (i)	683,463		(6,762)		676,701
Total purchase price	$	1,230,413	$	(5,000)	$	1,225,413

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(i) Goodwill represents the excess of the fair value of the net assets acquired over the purchase price. Goodwill of $676.7 million was assigned to the Environmental Sales and Service reporting unit and is attributable to the future economic benefits arising from the acquired operations, synergies and the acquired workforce of HydroChemPSC. None of the goodwill related to this acquisition will be deductible for tax purposes

Business Acquisition, Pro Forma Information

The following table presents unaudited pro forma combined summary financial information for the years ended December 31, 2021 and December 31, 2020, respectively, and assumes the acquisition of HydroChemPSC occurred on January 1, 2020 (in thousands):

	2021		2020
Pro forma combined revenues	$	4,380,724	$	3,859,430
Pro forma combined net income	229,807		149,219