Outstanding Loans and Security Agreements - Schedule of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Aug. 31, 2020
Debt Instrument [Line Items]
Unpaid Principal Balance	$ 866,958	$ 867,127
Net Carrying Value, Current	0	0
Net Carrying Value, Long-Term	847,935	846,633
Total	847,935	846,633
Total recourse debt
Debt Instrument [Line Items]
Unpaid Principal Balance	862,500	862,500
Net Carrying Value, Current	0	0
Net Carrying Value, Long-Term	843,477	842,006
Total	843,477	842,006
Total non-recourse debt
Debt Instrument [Line Items]
Unpaid Principal Balance	4,458	4,627
Net Carrying Value, Current	0	0
Net Carrying Value, Long-Term	4,458	4,627
Total	$ 4,458	$ 4,627
3% Green Convertible Senior Notes due June 2028 | Senior Secured Notes
Debt Instrument [Line Items]
Interest Rate	3.00%	3.00%
Unpaid Principal Balance	$ 632,500	$ 632,500
Net Carrying Value, Current	0	0
Net Carrying Value, Long-Term	616,184	615,205
3% Green Convertible Senior Notes due June 2028 | Senior Secured Notes | Net Carrying Value
Debt Instrument [Line Items]
Net Carrying Value, Total	$ 616,184	$ 615,205
2.5% Green Convertible Senior Notes due August 2025 | Senior Secured Notes
Debt Instrument [Line Items]
Interest Rate	2.50%	2.50%	2.50%
Unpaid Principal Balance	$ 230,000	$ 230,000
Net Carrying Value, Current	0	0
Net Carrying Value, Long-Term	227,293	226,801
2.5% Green Convertible Senior Notes due August 2025 | Senior Secured Notes | Net Carrying Value
Debt Instrument [Line Items]
Net Carrying Value, Total	$ 227,293	$ 226,801
4.6% Term Loan due October 2026 | Term Loan
Debt Instrument [Line Items]
Interest Rate	4.60%	4.60%
Unpaid Principal Balance	$ 2,972	$ 3,085
Net Carrying Value, Current	0	0
Net Carrying Value, Long-Term	2,972	3,085
4.6% Term Loan due October 2026 | Term Loan | Net Carrying Value
Debt Instrument [Line Items]
Net Carrying Value, Total	$ 2,972	$ 3,085
4.6% Term Loan due April 2026 | Term Loan
Debt Instrument [Line Items]
Interest Rate	4.60%	4.60%
Unpaid Principal Balance	$ 1,486	$ 1,542
Net Carrying Value, Current	0	0
Net Carrying Value, Long-Term	1,486	1,542
4.6% Term Loan due April 2026 | Term Loan | Net Carrying Value
Debt Instrument [Line Items]
Net Carrying Value, Total	$ 1,486	$ 1,542