Outstanding Loans and Security Agreements (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Debt

The following is a summary of our debt as of December 31, 2021 (in thousands, except percentage data):

	Unpaid Principal Balance		Net Carrying Value						Interest Rate	Maturity Dates	Entity	Recourse
			Current		Long- Term		Total
10.25% Senior Secured Notes due March 2027	$	70,000	$	8,348	$	60,620	$	68,968	10.25%	March 2027	Company	Yes
2.5% Green Convertible Senior Notes due August 2025	230,000		—		222,863		222,863		2.5%	August 2025	Company	Yes
Total recourse debt	300,000		8,348		283,483		291,831
3.04% Senior Secured Notes due June 30, 2031	134,644		9,376		123,255		132,631		3.04%	June 2031	PPA V	No
7.5% Term Loan due September 2028	31,070		3,436		25,570		29,006		7.5%	September  2028	PPA IIIa	No
6.07% Senior Secured Notes due March 2030	73,955		4,671		68,591		73,262		6.07%	March 2030	PPA IV	No
Total non-recourse debt	239,669		17,483		217,416		234,899
Total debt	$	539,669	$	25,831	$	500,899	$	526,730

The following is a summary of our debt as of December 31, 2020 (in thousands, except percentage data):

	Unpaid Principal Balance		Net Carrying Value						Unused Borrowing Capacity		Interest Rate	Maturity Dates	Entity	Recourse
			Current		Long- Term		Total
10.25% Senior Secured Notes due March 2027	$	70,000	$	—	$	68,614	$	68,614	$	—	10.25%	March 2027	Company	Yes
2.5% Green Convertible Senior Notes due August 2025	230,000		—		99,394		99,394		—		2.5%	August 2025	Company	Yes
Total recourse debt	300,000		—		168,008		168,008		—
7.5% Term Loan due September 2028	34,456		2,826		28,920		31,746		—		7.5%	September  2028	PPA IIIa	No
6.07% Senior Secured Notes due March 2030	77,837		3,882		73,125		77,007		—		6.07%	March 2030	PPA IV	No
LIBOR + 2.5% Term Loan due December 2021	114,761		114,138		—		114,138		—		LIBOR plus margin	December 2021	PPA V	No
Letters of Credit due December 2021	—		—		—		—		968		2.25%	December 2021	PPA V	No
Total non-recourse debt	227,054		120,846		102,045		222,891		968
Total debt	$	527,054	$	120,846	$	270,053	$	390,899	$	968

Schedule of Repayment and Interest Expense

The following table presents details of our outstanding loan principal repayment schedule as of December 31, 2021 (in thousands):

2022	$	25,831
2023	32,430
2024	36,369
2025	270,613
2026	44,870
Thereafter	129,556
	$	539,669