REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 296,203	$ 335,572	$ 577,243	$ 592,821	[1]
Gathering and processing services
Disaggregation of Revenue [Line Items]
Total operating revenues	102,551	102,080	205,976	182,525
Natural gas, NGLs and condensate sales
Disaggregation of Revenue [Line Items]
Total operating revenues	191,430	229,651	365,254	404,579
Other revenue
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 2,222	$ 3,841	$ 6,013	$ 5,717	[1]

[1] The results of the legacy ALTM business are not included in the Company’s consolidated financials prior to February 22, 2022. Refer to the basis of presentation in Note 1—Description of the Organization and Summary of Significant Accounting Policies in the Notes to Condensed Consolidated Financial Statements in this Form 10-Q for further information.