v3.26.1
CRYPTOCURRENCY ASSETS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
CRYPTOCURRENCY ASSETS      
Beginning balance $ 9,581 $ 7,625 $ 5,612
Cryptocurrencies mined from mining business 6,670 17,092 21,601
Deposits received from customers of mining data center 815 442  
Deposits returned to customers of mining data center   (1,194) (71)
Payment of service expense and long-lived assets (1,746) (148) (13,810)
Disposal of cryptocurrency assets (25,386) (32,995) (31,601)
Utility fee received from customers of mining data center 11,565 11,480 13,901
Cryptocurrencies purchased using fiat currency 9,477 2,258 13,381
Cryptocurrencies collected from derivative contracts 8,115 23,109 9,500
Cryptocurrencies paid to derivative contracts (7,639) (22,265) (8,560)
Changes in fair value of cryptocurrency assets (4,356) 3,203  
Changes in fair value of payables settled by cryptocurrency assets 7 37  
Cryptocurrencies collected from short-term investments   5,506  
Cryptocurrencies paid to short-term investments   (5,350)  
Cryptocurrency transferred from discontinued operation to continuing operations   3,064  
Cryptocurrencies received in connection with the disposal of discontinued operation 1,000 1,000  
Cryptocurrencies paid in connection with asset acquisition   (2,265)  
Cryptocurrencies received from disposal of property and equipment   42  
Impairment of cryptocurrency assets     (2,359)
Advances received from customer for hash calculation rental services   1,057  
Cryptocurrencies paid to purchase mining machines   (2,752)  
Cryptocurrencies paid to settle hosting arrangement 136 229  
Cryptocurrencies received from disposal of long-term investment 190    
Cryptocurrency loss from online scam (1,266)    
Others 87 10 31
Ending balance of cryptocurrency assets, net 6,978 9,581 $ 7,625
CRYPTOCURRENCY ASSETS | ASU 2023-08 | Cumulative-effect      
CRYPTOCURRENCY ASSETS      
Beginning balance $ 854    
Ending balance of cryptocurrency assets, net   $ 854