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RESTRICTED CASH (Details) - Restrictions on Cash and Cash Equivalents - USD ($)
$ in Thousands
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Restrictions on Cash and Cash Equivalents [Abstract]      
Cash and cash equivalents $ 2,949 $ 6,364  
Restricted cash 1,025 1,000  
Total cash, cash equivalents, and restricted cash $ 3,974 $ 7,364 $ 4,958