Liquidity and Capital Resources and Going Concern (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Sep. 26, 2023	Nov. 11, 2022
Debt Instrument [Line Items]
Accumulated deficit	$ 4,193,087		$ 4,193,087		$ 3,958,499
Cash	7,269	$ 6,714	7,269	$ 6,714	1,898
Working capital	(168,300)		(168,300)
Related Party
Debt Instrument [Line Items]
Interest expense	1,212	$ 69	7,812	$ 139
Related party notes – China | Related Party
Debt Instrument [Line Items]
Interest expense			20,000		$ 800
Chongqing Leshi Small Loan Co., Ltd. | Related Party Notes, China, Due On Demand | Related Party
Debt Instrument [Line Items]
Breach of agreement	7,700		7,700
Standby Equity Purchase Agreement
Debt Instrument [Line Items]
Standby equity purchase agreement, term							3 years
Option to increase commitment amount							$ 350,000
Standby Equity Purchase Agreement | Class A Common Stock
Debt Instrument [Line Items]
Commitment amount	342,500		342,500				$ 200,000
Sale of stock, additional commitment amount	192,500		192,500
Sales Agreement | Class A Common Stock | Sales Agents
Debt Instrument [Line Items]
Commitment amount						$ 90,000
SPA Notes | Committed Debt
Debt Instrument [Line Items]
Aggregate principal	554,500		554,500
Debt instrument, funded	365,300		365,300
Debt instrument, to be funded	189,200		189,200
Debt instrument, outstanding	38,700		38,700
SPA Notes | Optional Debt
Debt Instrument [Line Items]
Aggregate principal	366,000		366,000
Debt instrument, funded	48,400		48,400
Debt instrument, to be funded	317,600		317,600
Debt instrument, outstanding	$ 10,400		$ 10,400