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BUSINESS ACTIVITY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Deferred assets and liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Jun. 30, 2023
BUSINESS ACTIVITY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES    
Inventory reserve $ 181 $ 163
Accumulated depreciation (6) (5)
Accumulated goodwill amortization 67 (13)
Accumulated intangible amortization 129 130
Unrealized loss on investments   68
Deferred rent 4 4
Warranty reserve 3 7
Stock compensation 68 68
Net operating loss carryforward 974 1,097
Allowance for doubtful accounts 36 36
Net 1,456 1,555
Valuation allowance $ (1,456) $ (1,555)