Income Taxes (Details 1) - USD ($)	Sep. 30, 2018	Jun. 30, 2018
Deferred tax assets
Allowance for doubtful accounts	$ 793,000	$ 540,000
Net operating loss	416,000	355,000
Total deferred tax assets	1,209,000	895,000
Valuation allowance	(380,000)	(260,500)
Deferred tax assets, net - long-term	$ 829,000	$ 634,500