Income Taxes (Components of Net Deferred Income Tax Assets and Liabilities) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards	$ 7,028,242	$ 7,430,299
Deferred Tax Expense from Stock Options Exercised	33,877	0
Deferred Tax Assets, Regulatory Assets and Liabilities	155,111	0
Deferred income tax liabilities:
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	47,391	49,633
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits	70,084	48,969
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves	107,914	73,583
Deferred Tax Assets, Property, Plant and Equipment	290,921	57,628
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Warranty Reserves	9,879	6,736
Deferred Tax Assets, Gross	7,743,419	7,666,848
Deferred Tax Assets, Valuation Allowance	(7,554,406)	(7,649,471)
Deferred Tax Assets, Net of Valuation Allowance	189,013	17,377
Deferred Tax Liabilities, Property, Plant and Equipment	(21,554)	(17,377)
Deferred Tax Liabilities, Leasing Arrangements	(167,459)	0
Deferred Tax Liabilities, Gross	(189,013)	(17,377)
Deferred Tax Assets, Net	0	0
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (95,065)	$ (106,220)