Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash		$ 226,625	$ 202,525
Restricted cash		77,626	39,265
Accounts receivable (net of allowances for doubtful accounts of $2,228 and $1,665 as of December 31, 2018 and 2017, respectively)		66,435	60,359
State tax credits receivable		2,697	11,085
Inventories		79,467	94,427
Prepaid expenses and other current assets		8,563	9,202
Total current assets		461,413	416,863
Restricted cash		148	0
Solar energy systems, net		3,820,017	3,161,570
Property and equipment, net		34,893	36,402
Intangible assets, net		10,088	14,294
Goodwill		87,543	87,543
Other assets		335,685	246,464
Total assets (1)	[1]	4,749,787	3,963,136
Current liabilities:
Accounts payable		131,278	115,193
Distributions payable to noncontrolling interests and redeemable noncontrolling interests		15,847	13,583
Accrued expenses and other liabilities		98,636	97,230
Deferred revenue, current portion		47,407	42,609
Deferred grants, current portion		7,885	8,193
Finance lease obligations, current portion		9,193	7,421
Non-recourse debt, current portion		35,484	21,529
Pass-through financing obligation, current portion		26,461	5,387
Total current liabilities		372,191	311,145
Deferred revenue, net of current portion		544,218	522,243
Deferred grants, net of current portion		221,739	227,519
Finance lease obligations, net of current portion		9,992	5,811
Recourse debt		247,000	247,000
Non-recourse debt, net of current portion		1,466,438	1,026,416
Pass-through financing obligation, net of current portion		337,282	132,823
Other liabilities		48,210	42,743
Deferred tax liabilities		93,633	83,119
Total liabilities (1)	[1]	3,340,703	2,598,819
Commitments and contingencies (Note 20)
Redeemable noncontrolling interests		126,302	123,801
Stockholders’ equity:
Preferred stock, $0.0001 par value—authorized, 200,000 shares as of December 31, 2018 and 2017; no shares issued and outstanding as of December 31, 2018 and 2017		0	0
Common stock, $0.0001 par value—authorized, 2,000,000 shares as of December 31, 2018 and 2017; issued and outstanding, 113,149 and 107,350 shares as of December 31, 2018 and 2017, respectively		11	11
Additional paid-in capital		722,429	682,950
Accumulated other comprehensive loss		(3,124)	(4,113)
Retained earnings		229,391	202,734
Total stockholders’ equity		948,707	881,582
Noncontrolling interests		334,075	358,934
Total equity		1,282,782	1,240,516
Total liabilities, redeemable noncontrolling interests and total equity		$ 4,749,787	$ 3,963,136

[1] The Company’s consolidated assets as of December 31, 2018 and 2017 include $2,905,295 and $2,568,378, respectively, in assets of variable interest entities, or “VIEs”, that can only be used to settle obligations of the VIEs. Solar energy systems, net, as of December 31, 2018 and 2017 were $2,712,377 and $2,385,329, respectively; cash as of December 31, 2018 and 2017 were $105,494 and $118,352, respectively; restricted cash as of December 31, 2018 and 2017 were $2,071 and $2,699, respectively; accounts receivable, net as of December 31, 2018 and 2017 were $18,539 and $18,786, respectively; prepaid expenses and other current assets as of December 31, 2018 and 2017 were $387 and $917, respectively and other assets as of December 31, 2018 and 2017 were $66,427 and $42,295, respectively. The Company’s consolidated liabilities as of December 31, 2018 and 2017 include $660,758 and $677,955, respectively, in liabilities of VIEs whose creditors have no recourse to the Company. These liabilities include accounts payable as of December 31, 2018 and 2017 of $12,136 and $15,929, respectively; distributions payable to noncontrolling interests and redeemable noncontrolling interests as of December 31, 2018 and 2017 of $15,797 and $13,526, respectively; accrued expenses and other liabilities as of December 31, 2018 and 2017 of $7,122 and $5,200, respectively; deferred revenue as of December 31, 2018 and 2017 of $396,920 and $409,761, respectively; deferred grants as of December 31, 2018 and 2017 of $29,229 and $30,406, respectively; non-recourse debt as of December 31, 2018 and 2017 of $190,711 and $201,285, respectively; and other liabilities as of December 31, 2018 and December 31, 2017 of $8,843 thousand and $1,848, respectively.