Stockholders’ Equity and Convertible Redeemable Preferred Stock - Narrative (Details) $ / shares in Units, $ in Thousands, ¥ in Millions								2 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended
	Aug. 25, 2023 shares	Aug. 07, 2023 shares	Feb. 02, 2023 USD ($) shares	Dec. 27, 2022 USD ($) shares	Nov. 14, 2022 USD ($) $ / shares shares	Sep. 15, 2022 USD ($) shares	Jul. 12, 2022 shares	May 02, 2023 number_of_notice shares	Mar. 31, 2020 USD ($)	Mar. 31, 2020 CNY (¥)	Sep. 30, 2023 USD ($) shares	Dec. 31, 2023 USD ($) installment vote $ / shares shares	Dec. 31, 2023 CNY (¥) installment shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2023 CNY (¥) vote shares	Feb. 01, 2023	Jan. 24, 2023 shares
Stockholders Equity [Line Items]
Common stock issuance | $														$ 2,886
Conversion ratio, reverse split	0.008
Common stock, shares authorized (in shares)												1,500,000,000		1,500,000,000			1,500,000,000
Common stock, par value (in dollars per share) | $ / shares												$ 0.001		$ 0.001
New Energy | Qingdao Xingyang City Investment
Stockholders Equity [Line Items]
Ownership interest (as percent)															100.00%	100.00%
Qingdao Xingyang City Investment
Stockholders Equity [Line Items]
Aggregate potential investment												$ 28,000					¥ 200.0
Installments of capital contribution									$ 7,000	¥ 50.0			¥ 50.0
Remaining capital contribution												$ 21,000	¥ 150.0
Number of installments | installment												3	3
Dividend rate (as percent)												6.00%	6.00%
Threshold period for selling (in years)												1 year	1 year
Threshold period to redeem investment (in years)												3 years	3 years
U.S. Hybrid
Stockholders Equity [Line Items]
Number of common stock issued (in shares)							100,000
Equity interest percentage							100.00%
Qingdao Xingyang City Investment | Qingdao Xingyang City Investment | New Energy
Stockholders Equity [Line Items]
Total purchase price paid															$ 7,900	¥ 56.0
Common Stock
Stockholders Equity [Line Items]
Common stock issuance (in shares)														138,400
Common stock issuance | $														$ 17
Shares converted (in shares)												1,400,000	1,400,000
Securities Purchase Agreement
Stockholders Equity [Line Items]
Shares issued (in shares)					20,000,000
Weighted average exercise price of warrants (in dollars per share) | $ / shares					$ 0.2867
Warrant term (in years)					5 years
Ownership limitation percentage					9.99%
Common stock issuance | $			$ 10,000	$ 5,000	$ 5,000
Number of cashless exercise notices | number_of_notice								10
Unissued warrants (in shares)								20,000,000
Warrant liability | $												$ 18,600
Preferred stock, dividend per annum (as percent)					8.00%
Securities Purchase Agreement | Preferred Stock
Stockholders Equity [Line Items]
Common stock issuance (in shares)			10,000,000	5,000,000	5,000,000
Securities Purchase Agreement | Warrants
Stockholders Equity [Line Items]
Common stock issuance (in shares)			10,000,000	5,000,000	5,000,000
Fair value of warrants | $														$ 1,200
Number of warrants (in shares)								96,700,000
Remaining warrant liabilities | $											$ 1,000
Securities Purchase Agreement | Common Stock
Stockholders Equity [Line Items]
Number of warrants (in shares)								3,200,000			3,200,000
Standby Equity Purchase Agreement
Stockholders Equity [Line Items]
Shares issued (in shares)						1,200,000						1,100,000	1,100,000	200,000
Ownership limitation percentage						4.99%
Common stock issuance as a commitment fee (in shares)						12,000								12,000
Transaction period (in months)						36 months
Purchase price equal to percentage of market price						95.00%
Structuring fee | $						$ 10
Convertible preferred stock
Stockholders Equity [Line Items]
Preferred stock, shares authorized (in shares)												60,000,000					60,000,000
Preferred stock, par value (in dollars per share) | $ / shares												$ 0.001
Series A Preferred Stock
Stockholders Equity [Line Items]
Preferred stock, shares outstanding (in shares)												7,000,000		7,000,000			7,000,000
Preferred stock, shares issued (in shares)												7,000,000		7,000,000			7,000,000
Number of votes entitled | vote												1					1
Converted shares issued (in shares)												10					10
Distribution amount per share (in dollars per share) | $ / shares												$ 0.50
Convertible redeemable preferred stock, issued (in shares)												7,000,000		7,000,000			7,000,000
Series B Preferred Stock
Stockholders Equity [Line Items]
Shares converted (in shares)												17,900,000	17,900,000
Convertible redeemable preferred stock, shares authorized (in shares)												60,000,000		60,000,000			60,000,000
Convertible redeemable preferred stock, issued (in shares)												20,000,000		10,000,000			20,000,000
Series B Preferred Stock | YA II PN, Ltd
Stockholders Equity [Line Items]
Shares issued (in shares)		6,000,000
Series C Preferred Stock
Stockholders Equity [Line Items]
Converted shares issued (in shares)												0.16					0.16
Distribution amount per share (in dollars per share) | $ / shares												$ 0.1804
Convertible redeemable preferred stock, shares authorized (in shares)												2,000,000		2,000,000			2,000,000
Convertible redeemable preferred stock, issued (in shares)												1,159,210		0			1,159,210		1,159,276
Conversion ratio	0.16																	20
Shares converted (in shares)	185,484
Number of votes | vote												1					1