Quarterly report pursuant to Section 13 or 15(d)

VIE Arrangements - Carrying Amounts and Classification of the VIEs' Assets and Liabilities Included in the Consolidated Balance Sheets (Details)

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VIE Arrangements - Carrying Amounts and Classification of the VIEs' Assets and Liabilities Included in the Consolidated Balance Sheets (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Current assets:    
Cash $ 242,936 $ 202,525
Restricted cash 32,049 39,265
Accounts receivable, net 65,354 60,359
Prepaid expenses and other current assets 9,699 9,202
Total current assets 446,016 416,863
Solar energy systems, net 3,618,125 3,161,570
Other assets 336,705 246,464
Total assets [1] 4,533,199 3,963,136
Current liabilities:    
Accounts payable 136,064 115,193
Distributions payable to noncontrolling interests and redeemable noncontrolling interests 15,387 13,583
Accrued expenses and other liabilities 85,897 97,230
Deferred revenue, current portion 46,571 42,609
Deferred grants, current portion 8,719 8,193
Non-recourse debt, current portion 27,496 21,529
Total current liabilities 383,861 311,145
Deferred revenue, net of current portion 539,863 522,243
Deferred grants, net of current portion 220,274 227,519
Non-recourse debt, net of current portion 1,290,102 1,026,416
Other liabilities 37,717 42,743
Total liabilities [1] 3,131,714 2,598,819
Variable Interest Entities    
Current assets:    
Cash 106,492 118,352
Restricted cash 4,944 2,699
Accounts receivable, net 19,123 18,786
Prepaid expenses and other current assets 387 917
Total current assets 130,946 140,754
Solar energy systems, net 2,587,296 2,385,329
Other assets 65,155 42,295
Total assets 2,783,397 2,568,378
Current liabilities:    
Accounts payable 8,442 15,929
Distributions payable to noncontrolling interests and redeemable noncontrolling interests 15,337 13,526
Accrued expenses and other liabilities 6,568 5,200
Deferred revenue, current portion 28,034 28,695
Deferred grants, current portion 1,016 1,021
Non-recourse debt, current portion 2,755 11,179
Total current liabilities 62,152 75,550
Deferred revenue, net of current portion 360,936 381,066
Deferred grants, net of current portion 28,489 29,385
Non-recourse debt, net of current portion 192,539 190,106
Other liabilities 8,790 1,848
Total liabilities $ 652,906 $ 677,955
[1] The Company’s consolidated assets as of September 30, 2018 and December 31, 2017 include $2,783,397 and $2,568,378, respectively, in assets of variable interest entities (“VIEs”) that can only be used to settle obligations of the VIEs. These assets include solar energy systems, net, as of September 30, 2018 and December 31, 2017 of $2,587,296 and $2,385,329, respectively; cash as of September 30, 2018 and December 31, 2017 of $106,492 and $118,352, respectively; restricted cash as of September 30, 2018 and December 31, 2017 of $4,944 and $2,699, respectively; accounts receivable, net as of September 30, 2018 and December 31, 2017 of $19,123 and $18,786, respectively; prepaid expenses and other current assets as of September 30, 2018 and December 31, 2017 of $387 and $917, respectively; and other assets as of September 30, 2018 and December 31, 2017 of $65,155 and $42,295, respectively. The Company’s consolidated liabilities as of September 30, 2018 and December 31, 2017 include $652,906 and $677,955, respectively, in liabilities of VIEs whose creditors have no recourse to the Company. These liabilities include accounts payable as of September 30, 2018 and December 31, 2017 of $8,442 and $15,929, respectively; distributions payable to noncontrolling interests and redeemable noncontrolling interests as of September 30, 2018 and December 31, 2017 of $15,337 and $13,526, respectively; accrued expenses and other current liabilities as of September 30, 2018 and December 31, 2017 of $6,568 and $5,200, respectively; deferred revenue as of September 30, 2018 and December 31, 2017 of $388,970 and $409,761, respectively; deferred grants as of September 30, 2018 and December 31, 2017 of $29,505 and $30,406, respectively; non-recourse debt as of September 30, 2018 and December 31, 2017 of $195,294 and $201,285, respectively; and other liabilities as of September 30, 2018 and December 31, 2017 of $8,790 and $1,848, respectively.