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SHARE-BASED COMPENSATION - Options to Employees (Details) - shares
1 Months Ended 12 Months Ended
Jun. 30, 2020
Sep. 30, 2010
Dec. 31, 2024
SHARE-BASED COMPENSATION      
Maximum aggregate number of shares to be issued   2,330,000  
Annual percentage increase in authorized shares on the first day of each of 2007, 2008 and 2009 prior to the year of amendment for awards other than incentive option shares   1.00%  
Annual percentage increase in authorized shares on the first day of each calendar year from the year of amendment for awards other than incentive option shares   2.50%  
Number of shares to be granted after expiration     0
Extended term of the award (in years) 10 years    
Expiry term of share options     10 years