Outstanding Loans and Security Agreements (Tables)

12 Months Ended

Dec. 31, 2019

The following is a summary of our debt as of December 31, 2019 (in thousands):



	Unpaid Principal Balance		Net Carrying Value						Unused Borrowing Capacity		Interest Rate	Maturity Dates	Entity	Recourse
	Unpaid Principal Balance		Current		Long- Term		Total		Unused Borrowing Capacity		Interest Rate	Maturity Dates	Entity	Recourse

LIBOR + 4% term loan due November 2020	$	1,571	$	1,536	$	—	$	1,536	$	—	LIBOR plus margin	November 2020	Company	Yes
5% convertible promissory note due December 2020	33,104		36,482		—		36,482		—		5.0%	December 2020	Company	Yes
6% convertible promissory notes due December 2020	289,299		273,410		—		273,410		—		6.0%	December 2020	Company	Yes
10% notes due July 2024	93,000		14,000		75,962		89,962		—		10.0%	July 2024	Company	Yes
Total recourse debt	416,974		325,428		75,962		401,390		—
7.5% term loan due September 2028	38,337		3,882		31,087		34,969		—		7.5%	September 2028	PPA IIIa	No
6.07% senior secured notes due March 2030	80,988		3,151		76,865		80,016		—		6.1%	March 2030	PPA IV	No
LIBOR + 2.5% term loan due December 2021	121,784		5,122		115,315		120,437		—		LIBOR plus margin	December 2021	PPA V	No
Letters of Credit due December 2021	—		—		—		—		1,220		2.25%	December 2021	PPA V	No
Total non-recourse debt	241,109		12,155		223,267		235,422		1,220
Total debt	$	658,083	$	337,583	$	299,229	$	636,812	$	1,220

The following is a summary of our debt as of December 31, 2018 (in thousands):



	Unpaid Principal Balance		Net Carrying Value						Unused Borrowing Capacity		Interest Rate	Maturity Dates	Entity	Recourse
	Unpaid Principal Balance		Current		Long- Term		Total		Unused Borrowing Capacity		Interest Rate	Maturity Dates	Entity	Recourse

LIBOR + 4% term loan due November 2020	$	3,286	$	1,686	$	1,528	$	3,214	$	—	LIBOR plus margin	November 2020	Company	Yes
5% convertible promissory note due December 2020	33,104		—		34,706		34,706		—		8.0%	December 2020	Company	Yes
6% convertible promissory notes due December 2020	296,233		—		263,284		263,284		—		6.0%	December 2020	Company	Yes
10% notes due July 2024	100,000		7,000		88,555		95,555		—		10.0%	July 2024	Company	Yes
Total recourse debt	432,623		8,686		388,073		396,759		—
5.22% senior secured term notes due March 2025	79,698		11,994		66,572		78,566		—		5.2%	March 2025	PPA II	No
7.5% term loan due September 2028	40,538		2,200		34,119		36,319		—		7.5%	September 2028	PPA IIIa	No
LIBOR + 5.25% term loan due October 2020	24,723		827		23,089		23,916		—		LIBOR plus margin	October 2020	PPA IIIb	No
6.07% senior secured notes due March 2030	83,457		2,469		79,868		82,337		—		6.1%	March 2030	PPA IV	No
LIBOR + 2.5% term loan due December 2021	125,456		3,672		119,712		123,384		—		LIBOR plus margin	December 2021	PPA V	No
Letters of Credit due December 2021	—		—		—		—		1,220		2.25%	December 2021	PPA V	No
Total non-recourse debt	353,872		21,162		323,360		344,522		1,220
Total debt	$	786,495	$	29,848	$	711,433	$	741,281	$	1,220

The following table presents detail of our entire outstanding loan principal repayment schedule as of December 31, 2019 (in thousands):