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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 |  |

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