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SHARE-BASED PAYMENT - Employee stock purchase plan (Details) - Employee Stock Purchase Plan
12 Months Ended
Jun. 30, 2021
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Maximum percentage of employee's monthly compensation 15.00%
Number of ordinary shares subject to the ESPP 200,000
Percentage of closing price of the Company's ordinary shares on the first business day and the last business day to determine purchase price 85.00%