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WARRANTY (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Sep. 30, 2017
Jun. 30, 2017
Sep. 30, 2016
Jun. 30, 2016
Product Warranties Disclosures [Abstract]                
Warranty reserves $ 150 $ 418 $ 150 $ 418 $ 146 $ 159 $ 349 $ 365
Warranty expense $ 28 $ 144 $ 28 $ 214