Equipment and Leasehold Improvements - Equipment and Leasehold Improvements (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Property and Equipment, gross	$ 4,432	$ 4,404
Accumulated depreciation	(3,518)	(3,466)
Property and Equipment, net	914	938
Factory equipment [Member]
Property and Equipment, gross	2,657	2,646
Computer equipment and software [Member]
Property and Equipment, gross	1,099	1,087
Office equipment and furniture [Member]
Property and Equipment, gross	205	205
Leasehold improvements [Member]
Property and Equipment, gross	463	463
Projects in process [Member]
Property and Equipment, gross	$ 8	$ 3

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