SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Short-term investments (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | |||
| Fair value gain | $ 0 | $ 1,316 | $ 0 |
| Short term investment outstanding | 0 | 0 | |
| Fair value gain/loss | $ 97 | $ 996 | 0 |
| Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Investment Income, Net | Investment Income, Net | |
| Carrying amount of equity securities | $ 3,326 | $ 8,411 | |
| Marketable securities gain/(loss) before adoption | $ 2,905 | $ 0 | |
| Marketable securities gain/(loss), after adoption | $ 5,085 | ||