Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Customer agreements	$	98,525	$	85,277	$	192,778	$	163,805
Incentives	7,570		7,162		12,441		28,484
Customer agreements and incentives	106,095		92,439		205,219		192,289
Solar energy systems	44,579		66,569		115,856		125,005
Products	30,620		45,587		70,950		81,805
Solar energy systems and product sales	75,199		112,156		186,806		206,810
Total revenue	$	181,294	$	204,595	$	392,025	$	399,099

Cash and restricted cash

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

	Six Months Ended June 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	$	269,569	$	299,537
Restricted cash, current and long-term	84,663		54,330
Total	$	354,232	$	353,867

Cash and restricted cash

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

	Six Months Ended June 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	$	269,569	$	299,537
Restricted cash, current and long-term	84,663		54,330
Total	$	354,232	$	353,867

Accounts receivable, net

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

	June 30, 2020		December 31, 2019
Customer receivables	$	58,201	$	79,899
Other receivables	968		23
Rebates receivable	3,168		957
Allowance for doubtful accounts	(2,337)		(3,151)
Total	$	60,000	$	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):

	June 30, 2020		December 31, 2019
Under Customer Agreements:
Payments received	$	560,828	$	558,630
Financing component balance	48,387		44,874
	609,215		603,504
Under SREC contracts:
Payments received	128,429		122,680
Financing component balance	4,903		3,315
	133,332		125,995
Total	$	742,547	$	729,499