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ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Stockholders' Equity Note [Abstract]        
Unrealized (loss) on available-for-sale securities $ (2) $ 0 $ (148) $ 0