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WARRANTY ACCRUAL (Schedule of accrual warranty costs) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]    
Balance at beginning of year $ 213 $ 136
Accruals during the year 339 204
Change in estimates of prior period accruals (27) (27)
Warranty amortization (304) (100)
Balance at end of year $ 221 $ 213