Portfolio Financings - Schedule of PPA Entities' Assets and Liabilities (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	[1]	$ 203,956	$ 246,947
Restricted cash, current	[1]	60,584	52,470
Accounts receivable	[1]	54,468	96,186
Customer financing receivable	[1]	5,603	5,428
Total current assets		565,900	618,604
Property and equipment, net	[1]	611,371	600,628
Customer financing receivable, non-current	[1]	42,457	45,268
Restricted cash, non-current	[1]	135,988	117,293
Other long-term assets	[1]	35,921	34,511
Total assets		1,464,028	1,454,387
Current liabilities:
Accrued expenses and other current liabilities	[1]	96,051	112,004
Deferred revenue and customer deposits	[1]	79,262	114,286
Non-recourse debt		119,710	120,846
Total current liabilities		409,046	436,377
Deferred revenue and customer deposits, non-current	[1]	79,059	87,463
Non-recourse debt, non-current		386,743	270,053
Other long-term liabilities		20,904	17,268
Total liabilities		1,434,080	1,312,991
PPA Entities
Current assets:
Cash and cash equivalents		4,140	1,421
Restricted cash, current		1,296	4,698
Accounts receivable		4,207	4,420
Customer financing receivable		5,603	5,428
Prepaid expenses and other current assets		628	3,048
Total current assets		15,874	19,015
Property and equipment, net		240,326	252,020
Customer financing receivable, non-current		42,457	45,268
Restricted cash, non-current		15,208	15,320
Other long-term assets		0	37
Total assets		313,865	331,660
Current liabilities:
Accrued expenses and other current liabilities		16,118	19,510
Deferred revenue and customer deposits		662	662
Non-recourse debt		117,690	120,846
Total current liabilities		134,470	141,018
Deferred revenue and customer deposits, non-current		5,744	6,072
Non-recourse debt, non-current		98,093	102,045
Total liabilities		$ 238,307	$ 249,135

[1] We have variable interest entities, which represent a portion of the consolidated balances recorded within these financial statement line items in the condensed consolidated balance sheets (see Note 11 - Portfolio Financings).