RELATED PARTY TRANSACTIONS - EV Purchase Agreement (Narrative) (Details) $ in Thousands, ر.س in Millions	1 Months Ended	3 Months Ended				9 Months Ended
	Aug. 31, 2023 vehicle	Sep. 30, 2024 USD ($)	Sep. 30, 2024 SAR (ر.س)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 SAR (ر.س)	Sep. 30, 2024 USD ($)	Sep. 30, 2024 SAR (ر.س)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 SAR (ر.س)	Sep. 30, 2024 SAR (ر.س)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 SAR (ر.س)
Related Party Transaction [Line Items]
Revenues		$ 200,038		$ 137,814		$ 573,359		$ 438,120
Accounts receivable, net		98,243				98,243					$ 51,822
Related Party
Related Party Transaction [Line Items]
Revenues		45,588		4,980		133,424		4,980
Accounts receivable, net		70,846				70,846					35,526
Electric Vehicle Purchase Agreement | Related Party | EV Purchase Agreement | Government of Saudi Arabia
Related Party Transaction [Line Items]
Number of vehicles committed | vehicle	100,000
Number of vehicles committed, minimum | vehicle	50,000
Number of vehicles committed, additional | vehicle	50,000
Number of years	10 years
Minimum vehicle purchase reduction period	6 months
Revenues		45,600	ر.س 171.0	$ 5,000	ر.س 18.7	133,400	ر.س 500.5	$ 5,000	ر.س 18.7
Accounts receivable, net		$ 70,800				$ 70,800				ر.س 265.8	$ 35,500	ر.س 133.2