SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration and Risk (Details) $ in Thousands |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Jun. 30, 2025
USD ($)
customer
|
Jun. 30, 2024
USD ($)
customer
|
Dec. 31, 2024 |
|
| Related party transaction [Line items] | |||
| Related party transactions | $ | $ 17,854 | $ 9,590 | |
| Number of customer | customer | 0 | 0 | |
| Revenue Benchmark | Customer Concentration Risk | Geely Group | |||
| Related party transaction [Line items] | |||
| Concentration risk (as a percent) | 93.73% | 78.67% | |
| Accounts receivable | Credit concentration | Geely Group | |||
| Related party transaction [Line items] | |||
| Concentration risk (as a percent) | 62.82% | 37.72% | |
| Purchases | Supplier concentration | Geely Group | |||
| Related party transaction [Line items] | |||
| Concentration risk (as a percent) | 48.76% | 69.70% | |
| Accounts Payable | Supplier concentration | Geely Group | |||
| Related party transaction [Line items] | |||
| Concentration risk (as a percent) | 55.72% | 60.39% | |