Deferred Tax Benefit (Schedule Of Provisions For Income Taxes) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Deferred Tax Benefit Schedule Of Provisions For Income Taxes Details
Book income	$ 827,800	$ 2,858,700
Nondeductible expenses	200,200	602,100
Accrued vacation payable	22,300	22,300
Allowance for bad debt	(13,700)	15,900
Depreciation	2,100	(16,500)
Valuation allowance	616,900	2,234,900
Income tax expense