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Public Offering of Class A common stock (Details Narrative) - USD ($) |  |  | 6 Months Ended
--- | --- | --- | ---
Dec. 21, 2016 | Dec. 16, 2016 | Dec. 31, 2016
Proceeds from issuance of common stock |  |  | $ 8,731,850
Underwriting Agreement [Member] | Roth Capital [Member] |  |  |
Offering amount |  | 7,000,000 |
Share price |  | $ 1.21 |
Underwriting Agreement [Member] | Roth Capital [Member] | Over-Allotment Option [Member] |  |  |
Grant of options for over allotment |  | 1,000,000 |
Number of days option exercisable |  | 45 days |
Proceeds from issuance of common stock | $ 9,000,000 |  |
Proceeds from equity offering, net of costs, shares | 8,000,000 |  |

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