Liquidity and Capital Resources and Going Concern (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Sep. 26, 2023	Nov. 11, 2022
Debt Instrument [Line Items]
Accumulated deficit	$ 4,115,401		$ 4,115,401		$ 3,958,499
Cash	793	$ 17,893	793	$ 17,893	1,898
Working capital	(198,700)		(198,700)
Related Party
Debt Instrument [Line Items]
Interest expense	1,506	$ 70	6,600	$ 70
Related party notes – China | Related Party
Debt Instrument [Line Items]
Interest expense			18,500		$ 800
Chongqing Leshi Small Loan Co., Ltd. | Related Party Notes, China, Due On Demand | Related Party
Debt Instrument [Line Items]
Breach of agreement	7,600		7,600
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	343,200		343,200
Debt instrument, to be funded	211,300		211,300
Debt instrument, outstanding	78,600		78,600
SPA Notes | Optional Debt
Debt Instrument [Line Items]
Aggregate principal	366,000		366,000
Debt instrument, funded	47,200		47,200
Debt instrument, to be funded	318,800		318,800
Debt instrument, outstanding	$ 9,200		$ 9,200