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WARRANTY (Movement in Warranty) (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Guarantees and Product Warranties [Abstract]    
Beginning balance $ 221 $ 213
Accruals during the period 32 80
Changes in estimates of prior period warranty accruals (8) (8)
Warranty amortization and utilization (13) (95)
Ending balance $ 232 $ 190