REVENUE RECOGNITION - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Total operating revenues	[1]	$ 335,572	$ 135,766	$ 592,821	$ 283,869
Capitalized contract cost		17,500		17,500		$ 18,400
Amortization of contract costs		400	400	896	896
Minimum Volume Commitments
Disaggregation of Revenue [Line Items]
Total operating revenues		$ 300	$ 0	$ 300	$ 2,500

[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 Form 10-Q basis of presentation in Note 1—Description of the Organization and Summary of Significant Accounting Policies in the Notes to our Condensed Consolidated Financial Statements in this Form 10-Q for further information.