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COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Schedule of Equipment and improvements ) (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Jun. 30, 2021
Property, Plant and Equipment [Line Items]    
Equipment and improvements, gross $ 13,177 $ 11,625
Less: accumulated depreciation and amortization (8,344) (7,780)
Equipment and improvements, net 4,833 3,845
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Equipment and improvements, gross 2,224 2,173
Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Equipment and improvements, gross 6,661 5,895
Automobiles [Member]    
Property, Plant and Equipment [Line Items]    
Equipment and improvements, gross 21 21
Leaseholds and Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Equipment and improvements, gross $ 4,271 $ 3,536