Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Schedule of Impact of Company's Adoption of the ASU

The impact of the Company’s adoption of the ASUs on the prior period consolidated balance sheet was as follows (in thousands):

	December 31, 2015
	AsPreviously Reported		Adoption of ASU			As Reclassified
Prepaid expenses and other    current assets	$	6,696	$	(779	)	$	5,917
Other assets		32,277		(2,775	)		29,502
Long-term non-recourse debt,    current portion		5,408		(686	)		4,722
Recourse debt		194,975		2,025			197,000
Long-term non-recourse debt,    net of current portion		337,935		(4,893	)		333,042

Schedule of Revenue from External Customers

Revenues from external customers (including, but not limited to homeowners) for each group of similar products and services are as follows (in thousands):

	Year Ended December 31,
	2016		2015		2014
Operating leases	$	125,197	$	86,332	$	63,962
Incentives		43,220		31,672		20,044
Operating leases and incentives		168,417		118,004		84,006
Solar energy systems		127,727		50,191		23,687
Products		157,754		136,411		90,864
Solar energy systems and product sales		285,481		186,602		114,551
Total revenue	$	453,898	$	304,606	$	198,557

Schedule of Accounts Receivable

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

	December 31,
	2016			2015
Customer receivables	$	50,811		$	46,169
Customer deposits		5,793			10,150
Other receivables		856			4,376
Rebates receivable		3,964			1,221
Allowance for doubtful accounts		(1,166	)		(1,641	)
Total	$	60,258		$	60,275

Depreciated Property and Equipment, Net Estimated Useful Lives

Property and equipment is depreciated on a straight-line basis over the following periods:

Leasehold improvements	Lesser of estimated useful life of the asset or lease term, which is typically 2 to 6 years
Furniture	5 years
Computer hardware and software	3 years
Machinery and equipment	Lesser of 5 years or lease term
Automobiles	Lease term

Amortized Finite-Lived Intangible Assets Estimated Useful lives

Finite-lived intangible assets are initially recorded at fair value and presented net of accumulated amortization. Intangible assets are amortized on a straight-line basis over their estimated useful lives as follows:

Customer relationships	6-10 years
Developed technology	5 years
Trade names	5-8 years

Schedule of Deferred Revenue

Deferred revenue consists of the following (in thousands):

	December 31,
	2016		2015
Customer payments	$	400,233	$	370,754
Rebates and incentives		110,576		102,827
ITCs		121,004		126,853
SRECs		22,437		18,358
Total	$	654,250	$	618,792