Liquidity and Capital Resources and Going Concern (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Sep. 26, 2023	Nov. 11, 2022
Debt Instrument [Line Items]
Accumulated deficit	$ (4,324,624)	$ (4,314,346)
Cash	9,458	$ 7,144	$ 407
Working capital	(112,300)
Standby Equity Purchase Agreement
Debt Instrument [Line Items]
Option to increase commitment amount					$ 350,000
Class A Common Stock | Standby Equity Purchase Agreement
Debt Instrument [Line Items]
Commitment amount	342,500				$ 200,000
Additional commitment amount	192,500
Class A Common Stock | Sales Agreement | Sales Agents
Debt Instrument [Line Items]
Commitment amount				$ 90,000
SPA Notes | Committed Debt
Debt Instrument [Line Items]
Aggregate principal amount	655,500
Funded	427,700
To be funded	227,800
Outstanding	48,300
SPA Notes | Optional Debt
Debt Instrument [Line Items]
Aggregate principal amount	467,000
Funded	50,900
To be funded	386,100
Outstanding	$ 2,500