v3.26.3
RELATED PARTY BALANCES AND TRANSACTIONS - Additional information (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 6 Months Ended 12 Months Ended
May 13, 2022
USD ($)
$ / shares
Sep. 30, 2024
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
$ / shares
shares
Jan. 31, 2023
USD ($)
item
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Borrowings from banks     $ 1,266,520   $ 1,263,707    
Interest expenses     34,300 $ 33,641      
Payment of lease liabilities     5,131 9,196      
Short term lease cost     4,673 4,066      
Related party transactions     11,297 17,854      
Intangible assets     116,372   116,475    
Related party              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Borrowings from banks     863,776   784,288    
Interest expenses     23,183 $ 13,799      
Operating lease liabilities-related parties     1,661   1,636    
Operating lease liabilities, non-current     2,219   3,105    
Term of investment 1 year            
Payment for purchase of a short-term investment $ 10,000            
Conversion price | $ / shares $ 9.5            
Fair value of listed equity securities     1,358   1,811    
Prepayments and other current assets, net     112,784   111,886    
Other non-current assets     $ 587   569    
Related party | Minimum              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Interest rate       3.70%      
Related party | Maximum              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Interest rate       6.00%      
Related party | Loans payable | Minimum              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Interest rate     3.45%        
Related party | Loans payable | Maximum              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Interest rate     7.91%        
Related party | Zhejiang Geely Automobile Co., Ltd              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Borrowing from related party     $ 261,003 $ 342,633      
Related party | Geely Auto Wuhan Branch and Wuhan Geely Auto Parts              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Term of manufacturing agreement     10 years        
Related party | Geely holding              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Short Term Borrowings Secured By Intellectual Property     $ 84,640   79,664    
Related party | Unsecured loan from a related party              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Interest rate on debt (as a percent)   3.00% 3.65% 4.50%      
Related party | Lease agreements              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Payment of lease liabilities     $ 935 $ 922      
Operating lease liabilities-related parties     1,661   1,636    
Operating lease liabilities, non-current     2,219   3,105    
Related party | Service fee for entrusted daily operation and maintenance service | Wuhan Quanqing              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Related party transactions     0   0    
Related party | Payment of deposits              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Other non-current assets     587   569    
Related party | Disposal Of Equipment              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Related party transactions     331 10,162      
Prepayments and other current assets, net     2,297   2,666    
Related party | Short-Term Loan              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Borrowings from banks     863,776   784,288    
Interest expenses     18,763 $ 10,090      
Outstanding loan principal and interest was secured by equity interests     $ 187,178   $ 178,414    
Equity interest owned by subsidiary (in percent)     45.00%   45.00%    
Short Term Borrowings Secured By Intellectual Property     $ 433,852   $ 374,501    
Related party | Short-Term Loan | Intellectual Property | Asset Pledged as Collateral              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Intangible assets     0   0    
Related party | Short-Term Loan | Geely holding              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Short term borrowings secured by potential share settlement     242,136   $ 231,328    
Related party | LGIL Put Option | Geely HK And Etika              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Consideration             $ 0
Number of vehicles to be sold, pre-agreed condition | item             5,000
Exercise price | $ / shares           $ 0  
Ordinary shares issued | shares           0  
Related party | Refund of license fee in connection with adjustments to the product pipeline from a related party              
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES              
Related party transactions     $ 99,114