(Benefit) Provision for Income Taxes (Schedule of Deferred Tax Assets And Liabilities) (Details) - USD ($)	Jun. 30, 2021	Jun. 30, 2020
Deferred tax assets:
Accrued expenses	$ 186,339	$ 171,880
ESOP	2,190
Stock-based compensation	59,659	56,280
Inventory - effect of uniform capitalization	46,197	74,352
Other		1,437
Total deferred tax assets	294,385	303,949
Deferred tax liability:
Property, plant and equipment - principally due to differences in depreciation methods	422,771	503,009
Prepaid expenses	40,171	33,893
Total deferred tax liability	462,942	536,902
Net deferred tax liability	$ (168,557)	$ (232,953)