SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net loss	$ (41,146)	$ (388)	$ (434,792)	$ (50,794)	$ (1,711,471)
Cash and cash equivalents	42,146			42,146			$ 15,884
Stockholders' deficit	418,726	$ 397,461	(73,027)	418,726	(73,027)	$ 392,441	409,346	$ (416,452)	$ (1,341,210)
Restricted cash	21,797			21,797			36,356
Accounts receivable, allowance	8,724			8,724			8,724
Commitments not yet recognized	100,800			100,800			159,600
Current and non-current deferred revenue balance	64,300			64,300			80,400
Deferred revenue recognized	2,700		$ 30,900	$ 20,500	$ 79,600
Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contract with customer, term				15 months
Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contract with customer, term				48 months
Money Market Funds | Fair Value, Inputs, Level 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Cash equivalents	$ 34,100			$ 34,100			$ 10,200