Liquidity and Capital Resources and Going Concern - Narrative (Details) - USD ($) $ in Thousands	Jun. 16, 2023	Dec. 31, 2023	Sep. 27, 2023	Dec. 31, 2022	Nov. 11, 2022
Debt Instrument [Line Items]
Accumulated deficit		$ (3,958,499)		$ (3,526,755)
Cash		1,898		$ 16,968
Working capital		(169,800)
Chongqing Leshi Small Loan Co., Ltd. | Related Party Notes, China, Due On Demand | Related Party
Debt Instrument [Line Items]
Breach of agreement		$ 4,500
Interest rate (in percent)		18.00%
SPA Notes | Committed Debt
Debt Instrument [Line Items]
Aggregate principal amount		$ 554,500
Funded		343,200
To be funded		211,300
Outstanding		112,900
SPA Notes | Optional Debt
Debt Instrument [Line Items]
Aggregate principal amount		366,000
Funded		39,000
To be funded		327,000
Outstanding		1,000
Class A Common Stock and/or Warrants
Debt Instrument [Line Items]
Aggregate price	$ 300,000
Standby Equity Purchase Agreement
Debt Instrument [Line Items]
Option to increase commitment amount					$ 350,000
Standby Equity Purchase Agreement | Class A Common Stock
Debt Instrument [Line Items]
Commitment amount		342,500			$ 200,000
Additional commitment amount		192,500
Sales Agreement | Class A Common Stock | Sales Agents
Debt Instrument [Line Items]
Commitment amount		$ 271,900	$ 90,000