Outstanding Loans and Security Agreements - Recourse Debt Facilities Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Contractual interest expense	$ 13,099	$ 14,514	$ 41,000	$ 43,798
10.25% Senior Secured Notes due March 2027 | Notes
Debt Instrument [Line Items]
Interest rate percentage	10.25%		10.25%		10.25%
2.5% Green Convertible Senior Notes due August 2025 | Senior Secured Notes
Debt Instrument [Line Items]
Interest rate percentage	2.50%		2.50%		2.50%
Contractual interest expense	$ 1,900	1,900	$ 5,800	5,800
Amortization of debt issuance costs	$ 500	$ 500	$ 1,500	$ 1,500