Liquidity, Going Concern and Management Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Compensating Balances [Line Items]
Cash, cash equivalents, restricted cash, and restricted cash equivalents	$ 152,318		$ 152,318		$ 251,420
Working capital deficit	(218,200)		(218,200)
Accumulated deficit	(1,979,247)		(1,979,247)		$ (1,845,542)
Net loss from continuing operations	(54,684)	$ (84,485)	(136,846)	$ (222,062)
Convertible Debt
Compensating Balances [Line Items]
Accrued interest			27,100
2026 Notes | Convertible Debt
Compensating Balances [Line Items]
Debt instrument, repurchased face amount	$ 46,900		46,900
Sales agreement
Compensating Balances [Line Items]
Proceeds from issuance of common stock			43,300
Deduction of commission and expenses			$ 1,000
Issuance of common stock, net of offering costs (in shares)			33,218,851
Weighted average gross sale price per share	$ 1.33		$ 1.33