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SHARE-BASED COMPENSATION - (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2010
Feb. 28, 2023
Feb. 28, 2022
Feb. 28, 2021
SHARE-BASED COMPENSATION          
Shares authorized (as percent of total issued and outstanding) 5.00% 5.00%      
Shares authorized threshold (as percent of outstanding) 1.00% 1.00%      
Share-based compensation expense     $ 108,571 $ 174,832 $ 204,945
Share options, exercised intrinsic value     242 6,034 74,154
Share options, vested fair value     2,490 4,029 4,315
Share options          
SHARE-BASED COMPENSATION          
Share-based compensation expense     3,497 $ 4,089 $ 3,979
Unrecognized compensation expense     $ 7,997    
Unrecognized compensation expense recognition period (in years)     3 years 6 months    
Share options granted (in shares)     579,661 115,690 82,003
Share options low limit (per share)     $ 0.03 $ 40.00 $ 208.41
Share options high limit (per share)     $ 18.32 $ 175.14 $ 239.01
Non-vested shares - service condition          
SHARE-BASED COMPENSATION          
Granted (in shares)     2,891,157 5,685,826 1,737,898
Share-based compensation expense     $ 93,466 $ 125,596 $ 146,410
Unrecognized compensation expense recognition period (in years)     3 years 4 months 24 days    
Non-vested shares fair value     $ 114,050 145,265 111,331
Non vested unrecognized compensation expense     $ 192,498    
Non-vested shares - performance condition          
SHARE-BASED COMPENSATION          
Granted (in shares)     7,079    
Share-based compensation expense     $ 11,608 45,147 54,556
Unrecognized compensation expense recognition period (in years)     2 years 9 months 18 days    
Non-vested shares fair value     $ 20,157 $ 65,961 $ 0
Non vested unrecognized compensation expense     $ 26,329    
Minimum | Share options          
SHARE-BASED COMPENSATION          
Vesting (in years)     3 years 3 years 4 years
Share options expiration (in years)     8 years    
Minimum | Non-vested shares - service condition          
SHARE-BASED COMPENSATION          
Vesting (in years)     0 years 0 years 1 year
Minimum | Non-vested shares - performance condition          
SHARE-BASED COMPENSATION          
Vesting (in years)     0 years    
Maximum | Share options          
SHARE-BASED COMPENSATION          
Vesting (in years)     5 years 6 years 6 years
Share options expiration (in years)     12 years    
Maximum | Non-vested shares - service condition          
SHARE-BASED COMPENSATION          
Vesting (in years)     10 years 8 years 6 years
Maximum | Non-vested shares - performance condition          
SHARE-BASED COMPENSATION          
Vesting (in years)     4 years