Equipment and Leasehold Improvements (Summary of Major Categories of Equipment and Leasehold Improvements) (Details) - USD ($)	12 Months Ended
Jun. 30, 2023	Jun. 30, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 8,779,972	$ 8,828,654
Less: accumulated depreciation and amortization	7,826,069	7,740,637
Equipment and leasehold improvements, net	953,903	1,088,017
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 619,064	601,315
Machinery and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	5 years
Machinery and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	10 years
Furniture and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 337,419	337,419
Furniture and Office Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	5 years
Furniture and Office Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	10 years
Tooling [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 4,506,044	4,506,044
Computer & Technology Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 197,072	197,073
Computer & Technology Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	3 years
Computer & Technology Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	5 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,864,335	2,951,054
Leasehold Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	3 years
Leasehold Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (in years)	11 years
Assets in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 256,038	$ 235,749

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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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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