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FAIR VALUE- Rollforward (Details) - USD ($)
$ in Thousands
12 Months Ended
Feb. 28, 2022
Feb. 28, 2021
FAIR VALUE    
Balance at the beginning of the period $ 369,449 $ 310,842
Purchase 13,616 20,349
Disposal (2,219)  
Transfer in due to reclassification   22,579
Changes in fair value (41,698) 19,145
Impairment loss (204,807) (10,029)
Foreign exchange difference 8 6,563
Balance at the end of the period $ 134,349 $ 369,449