Income Taxes (Details Textual) - USD ($)	6 Months Ended	12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Jun. 30, 2018
Income Taxes (Textual)
Valuation allowance of assets	$ 2,662,000	$ 4,357,000	$ (235,000)
Federal tax credit carryforwards	$ 1,499,000
Net operating loss carryforwards, description	The Company had federal, New York State and New York City net operating loss (NOL) carryforwards of approximately $62,010,000, $58,357,000 and $57,937,000 respectively, which begin expiring in 2027, 2032 and 2032 respectively. Approximately $16,540,000 federal NOL can be carried forward indefinitely but it is limited to 80% of future taxable income.
Tax credit carryforward, expiring date	Jun. 30, 2028