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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Jun. 30, 2020
Jun. 30, 2019
CONSOLIDATED BALANCE SHEETS    
Ordinary shares, par value $ 0.01 $ 0.01
Ordinary shares, shares authorized 50,000,000 50,000,000
Ordinary shares, shares authorized, shares issued 23,971,084 21,964,027
Ordinary shares, shares authorized, shares outstanding 23,971,084 21,964,027