5. Property and Equipment (Details) - USD ($)	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Property and equipment, gross	$ 1,543,500	$ 1,493,600
Less accumulated depreciation and amortization	1,263,800	1,174,800
Property and equipment, net	$ 279,700	318,800
Automobiles
Useful lives	5 years
Property and equipment, gross	$ 22,000	22,000
Computer equipment
Property and equipment, gross	$ 247,900	233,900
Computer equipment \| Minimum
Useful lives	3 years
Computer equipment \| Maximum
Useful lives	5 years
Machinery and equipment
Property and equipment, gross	$ 1,010,600	986,500
Machinery and equipment \| Minimum
Useful lives	3 years
Machinery and equipment \| Maximum
Useful lives	7 years
Furniture and fixtures
Property and equipment, gross	$ 209,700	205,900
Furniture and fixtures \| Minimum
Useful lives	4 years
Furniture and fixtures \| Maximum
Useful lives	10 years
Leasehold improvements
Property and equipment, gross	$ 53,300	$ 45,300
Leasehold improvements \| Minimum
Useful lives	3 years
Leasehold improvements \| Maximum
Useful lives	10 years

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.

+ References

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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.

+ References

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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.

+ References

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