Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Allowance for doubtful accounts		$ 2,187	$ 1,665
Preferred stock, par value (in dollars per share)		$ 0.0001	$ 0.0001
Preferred stock, shares authorized		200,000	200,000
Preferred stock, shares issued		0	0
Preferred stock, shares outstanding		0	0
Common stock, par value (in dollars per share)		$ 0.0001	$ 0.0001
Common stock, shares authorized		2,000,000	2,000,000
Common stock, shares issued		110,487	107,350
Common stock, shares outstanding		110,487	107,350
Total assets	[1]	$ 4,299,368	$ 3,963,136
Solar energy systems, net		3,437,822	3,161,570
Cash		215,706	202,525
Restricted cash		54,549	39,265
Accounts receivable, net		123,334	112,069
Prepaid expenses and other current assets		9,114	9,202
Other assets		244,841	194,754
Total liabilities	[1]	2,924,118	2,598,819
Accounts payable		85,104	115,193
Distributions payable to noncontrolling interests and redeemable noncontrolling interests		15,063	13,583
Accrued expenses and other liabilities		98,294	97,230
Deferred revenue		580,042	564,852
Non-recourse debt		1,497,609	1,294,945
Variable Interest Entities
Total assets		2,798,533	2,568,378
Solar energy systems, net		2,627,741	2,385,329
Cash		90,445	118,352
Restricted cash		1,044	2,699
Accounts receivable, net		70,108	57,402
Prepaid expenses and other current assets		465	917
Other assets		8,730	3,679
Total liabilities		694,019	677,955
Accounts payable		17,104	15,929
Distributions payable to noncontrolling interests and redeemable noncontrolling interests		15,013	13,526
Accrued expenses and other liabilities		6,260	5,200
Deferred revenue		420,240	409,761
Deferred grants		29,764	30,406
Non-recourse debt		$ 196,184	$ 201,285

[1] The Company’s consolidated assets as of June 30, 2018 and December 31, 2017 include $2,798,533 and $2,568,378, respectively, in assets of variable interest entities, or “VIEs”, that can only be used to settle obligations of the VIEs. These assets include solar energy systems, net, as of June 30, 2018 and December 31, 2017 of $2,627,741 and $2,385,329, respectively; cash as of June 30, 2018 and December 31, 2017 of $90,445 and $118,352, respectively; restricted cash as of June 30, 2018 and December 31, 2017 of $1,044 and $2,699, respectively; accounts receivable, net as of June 30, 2018 and December 31, 2017 of $70,108 and $57,402, respectively; prepaid expenses and other current assets as of June 30, 2018 and December 31, 2017 of $465 and $917, respectively and other assets as of June 30, 2018 and December 31, 2017 of $8,730 and $3,679, respectively. The Company’s consolidated liabilities as of June 30, 2018 and December 31, 2017 include $694,019 and $677,955, respectively, in liabilities of VIEs whose creditors have no recourse to the Company. These liabilities include accounts payable as of June 30, 2018 and December 31, 2017 of $17,104 and $15,929, respectively; distributions payable to noncontrolling interests and redeemable noncontrolling interests as of June 30, 2018 and December 31, 2017 of $15,013 and $13,526, respectively; accrued expenses and other liabilities as of June 30, 2018 and December 31, 2017 of $6,260 and $5,200, respectively; deferred revenue as of June 30, 2018 and December 31, 2017 of $420,240 and $409,761, respectively; deferred grants as of June 30, 2018 and December 31, 2017 of $29,764 and $30,406, respectively; and non-recourse debt as of June 30, 2018 and December 31, 2017 of $196,184 and $201,285, respectively.