Outstanding Loans and Security Agreements - Recourse Debt Facilities Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Contractual interest expense	$ 13,814	$ 14,553	$ 27,901	$ 29,284
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	$ 2,000	1,900	$ 3,900	3,900
Amortization of debt issuance costs	$ 500	$ 500	$ 1,000	$ 1,000

Amount of amortization expense attributable to debt issuance costs.

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