Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income (loss)	$ (147,496)	$ (252,455)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	38,888	64,948
Write-off of property, plant and equipment, net	36	2,987
Impairment of equity method investment	4,236	0
Write-off of PPA II and PPA IIIb decommissioned assets	0	25,613
Debt make-whole expense	0	5,934
Revaluation of derivative contracts	(2,339)	2,955
Stock-based compensation	57,385	160,233
Loss on long-term REC purchase contract	72	61
Gain (loss) on extinguishment of debt	11,785	0
Amortization of debt issuance and premium cost, net	(195)	16,295
Changes in operating assets and liabilities:
Accounts receivable	(12,654)	63,426
Inventories	(22,772)	(1,775)
Deferred cost of revenue	1,562	(2,344)
Customer financing receivable and other	3,790	4,142
Prepaid expenses and other current assets	(2,647)	8,071
Other long-term assets	(3,217)	1,294
Accounts payable	8,704	14,171
Accrued warranty	(525)	(4,074)
Accrued expenses and other current liabilities	3,866	5,191
Deferred revenue and customer deposits	(15,658)	22,252
Other long-term liabilities	(2,811)	4,560
Net cash (used in) provided by operating activities	(79,990)	141,485
Cash flows from investing activities:
Purchase of property, plant and equipment	(33,066)	(39,690)
Payments for acquisition of intangible assets	0	(1,478)
Proceeds from maturity of marketable securities	0	104,500
Net cash (used in) provided by investing activities	(33,066)	63,332
Cash flows from financing activities:
Proceeds from issuance of debt	300,000	0
Proceeds from issuance of debt to related parties	30,000	0
Repayment of debt	(92,546)	(93,263)
Repayment of debt to related parties	(2,105)	(1,691)
Debt make-whole payment	0	(5,934)
Debt issuance costs	(13,247)	0
Proceeds from financing obligations	14,807	20,333
Repayment of financing obligations	(7,828)	(6,419)
Proceeds from noncontrolling interest	4,314	0
Payments to noncontrolling and redeemable noncontrolling interests	0	(43,713)
Distributions to noncontrolling and redeemable noncontrolling interests	(6,103)	(9,363)
Proceeds from issuance of common stock	12,745	12,623
Net cash provided by (used in) financing activities	240,037	(127,427)
Net increase in cash, cash equivalents, and restricted cash	126,981	77,390
Beginning of period	377,388	280,485
End of period	504,369	357,875
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	56,607	53,772
Cash paid during the period for taxes	353	715
Non-cash investing and financing activities:
Liabilities recorded for property, plant and equipment	350	2,574
Liabilities recorded for noncontrolling and redeemable noncontrolling interest	0	11,971
Equity investment in PPA II assets	0	27,809
Conversion of 10% convertible promissory notes into Class A common stock	150,670	0
Conversion of 10% convertible promissory notes to related party into Class A common stock	50,800	0
Accrued distributions to Equity Investors	0	288
Accrued interest for notes	30	1,347
Adjustment of embedded derivative related to debt extinguishment	$ 24,071	$ 0