Indebtedness (Tables)

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Schedule of Debt

As of September 30, 2015, debt consisted of the following (in thousands):

							Unused		Annual
	Carrying Values, net of						Borrowing		Contractual	Interest			Maturity
	debt discount						Capacity		Interest Rate	Rate			Date
	Current		Long Term		Total
Recourse debt:
Bank line of    credit	$	—	$	133,294	$	133,294	$	43,094	Varies1		3.45% -5.50	%	April 2018
Total recourse    debt	$	—	$	133,294	$	133,294	$	43,094
Non-recourse    debt:
Syndicated term    loans		678		161,401		162,079		7,600	LIBOR + 2.75%­Term A		3.05	%	December 2021
									LIBOR + 5.00%­Term B		6.00	%	December 2021
Bank term loans		1,125		30,395		31,520		—	6.25%		6.25	%	April 2022
Note payable		—		32,225		32,225		—	12.00%		12.00	%	December 2018
Solar asset-    backed notes		2,967		106,731		109,698		—	4.40% - Class A		4.40	%	July 2024
									5.38% - Class B		5.38	%	July 2024
Total non-    recourse debt		4,770		330,752		335,522		7,600
Total debt	$	4,770	$	464,047	$	468,816	$	50,694

As of December 31, 2014, debt consisted of the following (in thousands):

							Unused		Annual
	Carrying Values, net of						Borrowing		Contractual	Interest			Maturity
	debt discount						Capacity		Interest Rate	Rate			Date
	Current		Long Term		Total
Recourse debt:
Bank line of    credit	$	—	$	48,597	$	48,597	$	—	Prime Rate + 1.00%		4.25	%	December 2016
Total recourse    debt	$	—	$	48,597	$	48,597	$	—
Non-recourse    debt:
Non-bank term    loans		207		2,931		3,138		—	9.08%		9.08	%	December 2024
Syndicated term    loans		958		123,613		124,571		5,000	LIBOR + 2.75% - Term A		3.01	%	December 2021
									LIBOR + 5.00% - Term B		6.00	%	December 2021
Bank term loans		1,437		31,945		33,382		—	6.25%		6.25	%	April 2022
Note payable		—		29,563		29,563		—	12.00%		12.00	%	December 2018
Total non-    recourse debt		2,602		188,052		190,654		5,000
Total debt	$	2,602	$	236,649	$	239,251	$	5,000