v3.26.1
COMMITMENTS AND CONTINGENCIES - Contingency (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Apr. 13, 2023
USD ($)
Oct. 26, 2021
USD ($)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2020
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
May 06, 2020
entity
Apr. 02, 2020
USD ($)
COMMITMENTS AND CONTINGENCIES                              
Provision for equity litigants settlement     ¥ 35,326 $ 5,042 ¥ 92,192                    
Payable for equity litigants settlement     149,900         $ 21,393 ¥ 119,560            
Fabrication of Transactions                              
COMMITMENTS AND CONTINGENCIES                              
Sought value for losses from Company $ 145,800                            
Asserted losses                             $ 325,000
U.S. Opt Out Claims                              
COMMITMENTS AND CONTINGENCIES                              
Settlement amount   $ 175,000                          
U.S. Department of Justice Investigation                              
COMMITMENTS AND CONTINGENCIES                              
Liability or loss recognized at the end of year               0   $ 0          
Ministry of Finance Investigation                              
COMMITMENTS AND CONTINGENCIES                              
Liability or loss recognized at the end of year               0   0          
Number of entities of the Group | entity                           2  
U.S. Securities Litigation                              
COMMITMENTS AND CONTINGENCIES                              
Provision for equity litigants settlement           ¥ 1,226,100 $ 187,500                
Additional equity litigation provision         ¥ 92,200       0 0 $ 12,600 ¥ 280,000 $ 41,900    
Payable for equity litigants settlement     ¥ 35,300         $ 5,000 ¥ 119,600 $ 16,400