Provision for Income Taxes (Schedule of Deferred Tax Assets And Liabilities) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Deferred tax assets:
Accrued expenses	$ 195,915	$ 151,210
ESOP	73,696	90,072
Stock-based compensation	81,659	74,287
Inventory - effect on uniform capitalization	36,935	27,266
Unrealized loss (gain) on investment securities	666	(513)
Other	2,384	308
Total deferred tax assets	391,255	342,630
Deferred tax liability:
Property, plant and equipment - principally due to differences in depreciation methods	294,267	293,309
Total deferred tax liability	294,267	293,309
Net deferred tax asset	96,988	49,321
Deferred tax expense (benefit)	$ (46,488)	$ 57,735