SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Others (Details) ¥ in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2025
USD ($)
segment
¥ / $
|
Dec. 31, 2024
USD ($)
¥ / $
|
Dec. 31, 2023
USD ($)
¥ / $
|
Dec. 31, 2025
CNY (¥)
¥ / $
|
|
| Prepayment for vehicle purchase and other assets | ||||
| Impairment loss for prepayment for vehicle purchase and other current assets | $ 392 | $ 0 | $ 23,262 | |
| Inventory | ||||
| Period for considering vehicle as slow moving | 1 year | |||
| Write down of inventory | $ 0 | 0 | 0 | |
| Impairment of long-lived assets | ||||
| Impairment loss for other non-current asset | $ 16,946 | $ 0 | $ 0 | |
| Foreign currency translation | ||||
| Foreign currency exchange rate | ¥ / $ | 6.9931 | 7.2993 | 6.9931 | |
| Foreign currency, average translation rate | ¥ / $ | 7.1875 | 7.1957 | 7.0802 | |
| Concentration of credit risk | ||||
| Maximum insured bank deposit amount | $ 70 | ¥ 500 | ||
| Unprotected cash held in bank | $ 39 | |||
| Segment reporting | ||||
| Number of reportable segment | segment | 1 | |||
| Number Of Geographical Segments | segment | 0 | |||