Restatement of Previously Issued Condensed Consolidated Financial Statements - Statement of Cash Flows (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)	$ 47,978,000	$ 86,926,000	$ 129,620,000	$ 195,678,000
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization			25,852,000	37,034,000
Write-off of property, plant and equipment, net			0	2,704,000
Write-off of PPA II and PPA IIIb decommissioned assets			0	25,613,000
Debt make-whole expense				5,934,000
Revaluation of derivative contracts			(72,000)	1,636,000
Stock-based compensation			41,650,000	119,186,000
Loss on long-term REC purchase contract			2,000	60,000
Amortization of Debt Issuance Costs				11,255,000
Changes in operating assets and liabilities:
Accounts receivable			(11,787,000)	49,741,000
Inventories			(3,532,000)	22,197,000
Deferred cost of revenue			(9,995,000)	(38,793,000)
Customer financing receivable and other			2,490,000	2,713,000
Prepaid expenses and other current assets			7,314,000	10,227,000
Other long-term assets			(3,574,000)	(272,000)
Accounts payable			8,831,000	(5,461,000)
Accrued warranty			(159,000)	(6,696,000)
Accrued expenses and other current liabilities			13,665,000	5,581,000
Deferred revenue and customer deposits			2,907,000	51,913,000
Other long-term liabilities			(2,071,000)	4,722,000
Net cash provided by (used in) operating activities			(40,235,000)	103,616,000
Cash flows from investing activities:
Purchase of property, plant and equipment			(19,560,000)	(23,619,000)
Payments for acquisition of intangible assets			0	(970,000)
Proceeds from maturity of marketable securities			0	104,500,000
Net cash provided by (used in) investing activities			(19,560,000)	79,911,000
Cash flows from financing activities:
Repayment of debt				(83,997,000)
Repayment of debt to related parties			(2,105,000)	(1,220,000)
Debt make-whole payment			0	(5,934,000)
Proceeds from financing obligations			0	20,333,000
Repayment of financing obligations			(5,111,000)	(4,006,000)
Payments to noncontrolling and redeemable noncontrolling interests			0	(18,690,000)
Distributions to noncontrolling and redeemable noncontrolling interests			(5,815,000)	(7,753,000)
Proceeds from issuance of common stock			5,186,000	8,321,000
Net cash provided by (used in) financing activities			6,536,000	(92,946,000)
Net increase (decrease) in cash, cash equivalents, and restricted cash			(53,259,000)	90,581,000
Beginning of period			377,388,000	280,485,000
End of period	$ 324,129,000	371,066,000	324,129,000	371,066,000
Cash paid during the period for interest			34,487,000	35,702,000
Cash paid during the period for taxes			$ 224,000	497,000
Difference between Revenue Guidance in Effect before and after Topic 606
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)		9,760,000		9,183,000
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization				0
Write-off of property, plant and equipment, net				0
Write-off of PPA II and PPA IIIb decommissioned assets				0
Debt make-whole expense				0
Revaluation of derivative contracts				0
Stock-based compensation				0
Loss on long-term REC purchase contract				0
Amortization of Debt Issuance Costs				0
Changes in operating assets and liabilities:
Accounts receivable				3,424,000
Inventories				0
Deferred cost of revenue				0
Customer financing receivable and other				0
Prepaid expenses and other current assets				(2,000)
Other long-term assets				(271,000)
Accounts payable				0
Accrued warranty				33,000
Accrued expenses and other current liabilities				0
Deferred revenue and customer deposits				5,999,000
Other long-term liabilities				0
Net cash provided by (used in) operating activities				0
Cash flows from investing activities:
Purchase of property, plant and equipment				0
Payments for acquisition of intangible assets				0
Proceeds from maturity of marketable securities				0
Net cash provided by (used in) investing activities				0
Cash flows from financing activities:
Repayment of debt				0
Repayment of debt to related parties				0
Debt make-whole payment				0
Proceeds from financing obligations				0
Repayment of financing obligations				0
Payments to noncontrolling and redeemable noncontrolling interests				0
Distributions to noncontrolling and redeemable noncontrolling interests				0
Proceeds from issuance of common stock				0
Net cash provided by (used in) financing activities				0
Net increase (decrease) in cash, cash equivalents, and restricted cash				0
Beginning of period				0
End of period		0		0
Cash paid during the period for interest				0
Cash paid during the period for taxes				0
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)		67,231,000		155,504,000
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization				31,023,000
Write-off of property, plant and equipment, net				2,704,000
Write-off of PPA II and PPA IIIb decommissioned assets				25,613,000
Debt make-whole expense				5,934,000
Revaluation of derivative contracts				555,000
Stock-based compensation				115,100,000
Loss on long-term REC purchase contract				60,000
Amortization of Debt Issuance Costs				11,255,000
Changes in operating assets and liabilities:
Accounts receivable				46,591,000
Inventories				27,542,000
Deferred cost of revenue				19,198,000
Customer financing receivable and other				2,713,000
Prepaid expenses and other current assets				8,477,000
Other long-term assets				1,028,000
Accounts payable				(5,461,000)
Accrued warranty				(6,843,000)
Accrued expenses and other current liabilities				7,213,000
Deferred revenue and customer deposits				(25,411,000)
Other long-term liabilities				3,419,000
Net cash provided by (used in) operating activities				115,206,000
Cash flows from investing activities:
Purchase of property, plant and equipment				(18,882,000)
Payments for acquisition of intangible assets				(970,000)
Proceeds from maturity of marketable securities				104,500,000
Net cash provided by (used in) investing activities				84,648,000
Cash flows from financing activities:
Repayment of debt				(83,997,000)
Repayment of debt to related parties				(1,220,000)
Debt make-whole payment				(5,934,000)
Proceeds from financing obligations				0
Repayment of financing obligations				0
Payments to noncontrolling and redeemable noncontrolling interests				(18,690,000)
Distributions to noncontrolling and redeemable noncontrolling interests				(7,753,000)
Proceeds from issuance of common stock				8,321,000
Net cash provided by (used in) financing activities				(109,273,000)
Net increase (decrease) in cash, cash equivalents, and restricted cash				90,581,000
Beginning of period				280,485,000
End of period		371,066,000		371,066,000
Cash paid during the period for interest				23,867,000
Cash paid during the period for taxes				497,000
Restatement Impacts
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)		9,935,000		30,991,000
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization				6,011,000
Write-off of property, plant and equipment, net				0
Write-off of PPA II and PPA IIIb decommissioned assets				0
Debt make-whole expense				0
Revaluation of derivative contracts				1,081,000
Stock-based compensation				4,086,000
Loss on long-term REC purchase contract				0
Amortization of Debt Issuance Costs				0
Changes in operating assets and liabilities:
Accounts receivable				(274,000)
Inventories				(5,345,000)
Deferred cost of revenue				(57,991,000)
Customer financing receivable and other				0
Prepaid expenses and other current assets				1,752,000
Other long-term assets				(1,029,000)
Accounts payable				0
Accrued warranty				114,000
Accrued expenses and other current liabilities				(1,632,000)
Deferred revenue and customer deposits				71,325,000
Other long-term liabilities				1,303,000
Net cash provided by (used in) operating activities				(11,590,000)
Cash flows from investing activities:
Purchase of property, plant and equipment				(4,737,000)
Payments for acquisition of intangible assets				0
Proceeds from maturity of marketable securities				0
Net cash provided by (used in) investing activities				(4,737,000)
Cash flows from financing activities:
Repayment of debt				0
Repayment of debt to related parties				0
Debt make-whole payment				0
Proceeds from financing obligations				20,333,000
Repayment of financing obligations				(4,006,000)
Payments to noncontrolling and redeemable noncontrolling interests				0
Distributions to noncontrolling and redeemable noncontrolling interests				0
Proceeds from issuance of common stock				0
Net cash provided by (used in) financing activities				16,327,000
Net increase (decrease) in cash, cash equivalents, and restricted cash				0
Beginning of period				0
End of period		$ 0		0
Cash paid during the period for interest				11,835,000
Cash paid during the period for taxes				0
Restatement Impacts | Capitalized Stock-Based Compensation
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Stock-based compensation				4,700,000
Changes in operating assets and liabilities:
Deferred cost of revenue				1,500,000
Restatement Impacts | Capitalized Stock-Based Compensation, Managed Services Program
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Stock-based compensation				(600,000)
Restatement Impacts | Reclassification Of Lease Arrangements
Changes in operating assets and liabilities:
Deferred cost of revenue				56,500,000
Restatement Impacts | Change In Policy
Changes in operating assets and liabilities:
Accrued warranty				$ 300,000