Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net loss	$ (81,642)	$ (108,752)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	13,034	14,225
Write-off of property, plant and equipment, net	1	1
Revaluation of derivative contracts	241	87
Stock-based compensation	23,019	67,822
Loss (gain) on long-term REC purchase contract	(4)	59
Loss on extinguishment of debt	14,098	0
Amortization of debt issuance cost	4,755	5,152
Changes in operating assets and liabilities:
Accounts receivable	2,136	4,131
Inventories	2,083	11,087
Deferred cost of revenue	(19,494)	(11,084)
Customer financing receivable and other	1,240	1,339
Prepaid expenses and other current assets	3,060	6,628
Other long-term assets	(2,924)	(416)
Accounts payable	4,822	(2,464)
Accrued warranty	681	(2,697)
Accrued expenses and other current liabilities	509	(373)
Deferred revenue and customer deposits	5,253	1,244
Other long-term liabilities	1,184	4,166
Net cash used in operating activities	(27,948)	(9,845)
Cash flows from investing activities:
Purchase of property, plant and equipment	(12,360)	(11,946)
Payments for acquisition of intangible assets	0	(848)
Proceeds from maturity of marketable securities	0	104,500
Net cash provided by (used in) investing activities	(12,360)	91,706
Cash flows from financing activities:
Proceeds from issuance of debt to related parties	30,000	0
Repayment of debt	(9,128)	(5,016)
Repayment of debt to related parties	(2,105)	(778)
Proceeds from financing obligations	0	10,961
Repayment of financing obligations	(2,503)	(1,883)
Distributions to noncontrolling and redeemable noncontrolling interests	(4,270)	(3,189)
Proceeds from issuance of common stock	4,845	7,493
Net cash provided by financing activities	16,839	7,588
Net increase (decrease) in cash, cash equivalents, and restricted cash	(23,469)	89,449
Beginning of period	377,388	280,485
End of period	353,919	369,934
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	17,790	20,383
Cash paid during the period for taxes	29	222
Non-cash investing and financing activities:
Liabilities recorded for property, plant and equipment	466	2,067
Accrued distributions to Equity Investors	1	282
Accrued interest for notes	467	439
Accrued debt issuance costs	2,970	0
Adjustment of embedded derivative related to debt extinguishment	$ 24,071	$ 0