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WARRANTY (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Sep. 30, 2018
Jun. 30, 2018
Sep. 30, 2017
Jun. 30, 2017
Product Warranties Disclosures [Abstract]                
Warranty reserves $ 99 $ 150 $ 99 $ 150 $ 95 $ 107 $ 146 $ 159
Warranty expense $ 16 $ 28 $ 30 $ 28