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WARRANTY (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Sep. 30, 2019
Jun. 30, 2019
Sep. 30, 2018
Jun. 30, 2018
Product Warranties Disclosures [Abstract]                
Warranty expense $ 44 $ 16 $ 56 $ 30        
Warranty reserves $ 141 $ 99 $ 141 $ 99 $ 126 $ 136 $ 95 $ 107