The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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FAIR VALUE MEASUREMENT - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Dec. 21, 2022	May 13, 2022	Nov. 29, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
FAIR VALUE MEASUREMENT
Term of the debt instrument			1 year
Fair value gain (loss) of the financial assets included in earnings				$ 0	$ 1,316	$ 0
Fair value of Group's equity securities				3,326	8,411
Convertible Note
FAIR VALUE MEASUREMENT
Debt instrument amount derecognized	$ 11,316
Equity securities
FAIR VALUE MEASUREMENT
Amount recognized of the converted financial instrument	$ 11,316
Level 1 \| Equity securities
FAIR VALUE MEASUREMENT
Fair value of Group's equity securities				3,326	8,411
Related party \| Level 1 \| Equity securities
FAIR VALUE MEASUREMENT
Fair value gain (loss) of the financial assets included in earnings				$ 5,085	$ 2,905	$ 0
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]				Investment (loss) income, net	Investment (loss) income, net	Investment (loss) income, net
Related party \| ECARX \| Convertible Note
FAIR VALUE MEASUREMENT
Term of the debt instrument		1 year
Principal amount of debt		$ 10,000
Related party \| ECARX \| Equity securities
FAIR VALUE MEASUREMENT
Debt instrument conversion price per share	$ 9.5