COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Schedule of Equipment and improvements ) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	$ 11,625	$ 9,905
Less: accumulated depreciation and amortization	(7,780)	(7,219)
Equipment and improvements, net	3,845	2,686
Office Furnishings and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	2,173	2,143
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	5,895	5,382
Automobiles [Member]
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	21	21
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	$ 3,536	$ 2,359

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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