Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Schedule of Revenue from External Customers

Revenue from external customers for each group of similar products and services is as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Customer agreements	$	102,213	$	89,241	$	294,991	$	253,046
Incentives	12,272		7,008		24,713		35,492
Customer agreements and incentives	114,485		96,249		319,704		288,538
Solar energy systems	52,238		67,230		168,094		192,235
Products	43,037		52,063		113,987		133,868
Solar energy systems and product sales	95,275		119,293		282,081		326,103
Total revenue	$	209,760	$	215,542	$	601,785	$	614,641

Cash and Restricted Cash

Cash and restricted cash consists of the following (in thousands):

	Nine Months Ended September 30,
	2020		2019
Beginning of period:
Cash	$	269,577	$	226,625
Restricted cash, current and long-term	93,652		77,774
Total	$	363,229	$	304,399
End of period:
Cash	$	276,052	$	324,698
Restricted cash, current and long-term	105,462		48,714
Total	$	381,514	$	373,412

Cash and Restricted Cash

Cash and restricted cash consists of the following (in thousands):

	Nine Months Ended September 30,
	2020		2019
Beginning of period:
Cash	$	269,577	$	226,625
Restricted cash, current and long-term	93,652		77,774
Total	$	363,229	$	304,399
End of period:
Cash	$	276,052	$	324,698
Restricted cash, current and long-term	105,462		48,714
Total	$	381,514	$	373,412

Accounts Receivable, Net

Accounts receivable, net, consists of the following (in thousands):

	September 30, 2020		December 31, 2019
Customer receivables	$	67,849	$	79,899
Other receivables	2,276		23
Rebates receivable	2,845		957
Allowance for doubtful accounts	(2,316)		(3,151)
Total	$	70,654	$	77,728

Deferred Revenue

The opening balance of deferred revenue was $591.6 million as of December 31, 2018. Deferred revenue consists of the following (in thousands):

	September 30, 2020		December 31, 2019
Under Customer Agreements:
Payments received, net	$	562,996	$	558,630
Financing component balance	50,124		44,874
	613,120		603,504
Under SREC contracts:
Payments received, net	126,806		122,680
Financing component balance	5,035		3,315
	131,841		125,995
Total	$	744,961	$	729,499