Nature of Operations and Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, € in Millions							3 Months Ended		9 Months Ended							12 Months Ended
	Sep. 15, 2022 shares	Sep. 01, 2022 $ / shares shares	Aug. 29, 2022 USD ($) day $ / shares	Feb. 09, 2022 USD ($)	Feb. 09, 2022 EUR (€)	Oct. 25, 2021 USD ($) $ / shares	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) business	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2022 USD ($) segment $ / shares	Sep. 30, 2022 USD ($) business $ / shares	Sep. 30, 2022 USD ($) pillar $ / shares	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) businessUnit $ / shares	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2022	Mar. 07, 2022	Sep. 15, 2021	Mar. 03, 2021
Business Acquisition [Line Items]
Number of operating segments | segment										1
Number of reporting units											2			7
Number of businesses acquired | business								4			1
Number of pillars for electric vehicles | pillar												3
Conditional tender offer costs				$ 60,300,000	€ 52.5
Total revenue							$ 24,278,000	$ 26,581,000	$ 83,871,000						$ 86,647,000
Cash and cash equivalents							25,186,000		25,186,000	$ 25,186,000	$ 25,186,000	$ 25,186,000	$ 25,186,000	$ 25,186,000		$ 269,863,000
Product warranty accrual, noncurrent							600,000		600,000	600,000	$ 600,000	600,000	600,000	600,000
Number of additional businesses acquired | business											2
Principal							$ 13,233,000		$ 13,233,000	$ 13,233,000	$ 13,233,000	$ 13,233,000	$ 13,233,000	$ 13,233,000		$ 57,811,000
Interest rate in event of default							18.00%		18.00%	18.00%	18.00%	18.00%	18.00%	18.00%
Common stock, par value (in dollars per share) | $ / shares		$ 0.001					$ 0.001		$ 0.001	$ 0.001	$ 0.001	$ 0.001	$ 0.001	$ 0.001		$ 0.001
Standby Equity Purchase Agreement
Business Acquisition [Line Items]
Number of shares issued (in shares) | shares	150,000,000	60,000,000
Transaction period		36 months
Purchase price equal to percentage of market price		95.00%
Shares issued as a percentage of outstanding stock		5.00%
Threshold consecutive trading days, pricing period		3 days
Common stock issuance as a commitment fee (in shares) | shares		600,000					1,500,000						1,500,000
YA II PN, Ltd | Convertible Debenture
Business Acquisition [Line Items]
Conversion price (in dollars per share) | $ / shares			$ 1.50
Convertible notes payable			$ 16,700,000
Threshold percentage			85.00%
Threshold consecutive trading days | day			7
Conversion price of common stock (in dollars per share) | $ / shares			$ 0.20
YA II PN, Ltd | Convertible Debenture | Convertible Debt
Business Acquisition [Line Items]
Principal						$ 75,000,000
Proceeds from notes payable						$ 75,000,000
Interest rate						4.00%
Interest rate in event of default						18.00%
Conversion price (in dollars per share) | $ / shares						$ 1.88
Redemption of unpaid principal per month						$ 8,300,000
Principal and accrued and unpaid interest																$ 17,500,000
Convertible notes payable																57,500,000
PRC
Business Acquisition [Line Items]
Total revenue							$ 7,360,000	$ 8,580,000	$ 36,242,000						$ 16,710,000	29,700,000
Long lived assets							800,000		800,000	$ 800,000	$ 800,000	$ 800,000	$ 800,000	$ 800,000
Cash and cash equivalents							15,100,000		15,100,000	15,100,000	15,100,000	15,100,000	15,100,000	15,100,000
Restructuring charges									500,000
PRC | Selling, General and Administrative Expenses
Business Acquisition [Line Items]
Restructuring charges									500,000
PRC | Employee Severance
Business Acquisition [Line Items]
Restructuring charges									500,000
PRC | Consolidated Entities
Business Acquisition [Line Items]
Cash and cash equivalents							$ 2,200,000		$ 2,200,000	$ 2,200,000	$ 2,200,000	$ 2,200,000	$ 2,200,000	$ 2,200,000
Energica
Business Acquisition [Line Items]
Equity method investment, ownership percentage																			20.00%
Conditional tender offer costs				$ 60,300,000	€ 52.5
Equity method investment, ownership percentage threshold																		90.00%
Energica Motor Company, Inc.
Business Acquisition [Line Items]
Equity method investment, ownership percentage																				20.00%
Equity method investment, ownership percentage threshold																		90.00%
Energica Motor Company, Inc. | Forecast | Subsequent Event
Business Acquisition [Line Items]
Equity method investment, ownership percentage																	72.40%
Energica Motor Company, Inc. | Forecast | Subsequent Event | Energica Founders
Business Acquisition [Line Items]
Equity method investment, ownership percentage																	27.60%
VIA Motors International, Inc.
Business Acquisition [Line Items]
Percentage of ownership interest acquired							100.00%		100.00%	100.00%	100.00%	100.00%	100.00%	100.00%
Purchase price							$ 630,000,000		$ 630,000,000
Payments to acquire businesses, gross							450,000,000		450,000,000							$ 62,900,000
Fair value of contingent consideration							180,000,000		180,000,000
Loans and leases receivable, related parties							11,700,000		11,700,000	$ 11,700,000	$ 11,700,000	$ 11,700,000	$ 11,700,000	$ 11,700,000
Business acquisition, transaction costs							45,000,000		45,000,000	45,000,000	45,000,000	45,000,000	45,000,000	45,000,000
Business acquisition, operational and capital funding							$ 260,000,000		$ 260,000,000	$ 260,000,000	$ 260,000,000	$ 260,000,000	$ 260,000,000	$ 260,000,000