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Summary of Significant Accounting Policies (Details Textual) - USD ($) | 1 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 26, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Mar. 16, 2020 | Jun. 30, 2017 | Feb. 29, 2016
Summary of Significant Accounting Policies (Textual) |  |  |  |  |  |  |  |
Cash deposits |  | $ 36,278,519 |  |  |  |  |  |
Expected impact statements |  |  |  |  |  |  |  |
Effect of adoption |  |  |  |  |  |  |  |
Operating cash flows activities |  | (6,413,775) | $ (4,818,845) | $ (10,497,854) | (6,002,078) |  |  |
Accumulated deficit |  | (119,858,909) |  | (111,662,367) | (94,344,307) |  |  |
Promissory notes converted |  |  |  |  |  |  |  |
Private placements transaction related, description |  | The Company has received approximately $3,100,000 in warrant and option exercises, which resulted in the Company having approximately $116.4 million in cash, cash equivalents, and short term investments at March 16, 2020. Based on its budgeted cash flow requirements, the Company believes these funds are sufficient to fund its ongoing operations for at least 12 months after the issuance of these consolidated financial statements. |  |  |  |  |  |
Proceeds from sale of common stock |  | $ 109,447,482 |  |  |  |  |  |
Exercise of warrants |  | 4,447,038 |  |  |  |  |  |
Description of reverse stock split | The Company's Board of Directors approved a 1-to-4 reverse split of the Common Stock, which was effective on the NASDAQ Capital Market on September 30, 2019. As a result of the reverse stock split, every 4 shares of issued and outstanding common stock were converted into 1 share of issued and outstanding common stock, with all fractional shares rounded up to the nearest whole share, and the Company's authorized share of common stock were reduced from 200,000,000 to 50,000,000 shares. All share and per share amounts have been retroactively restated to reflect this reverse stock split. |  |  |  |  |  |  |
Cash and cash equivalents |  | 36,278,519 | $ 2,426,751 | 9,216,554 | $ 2,238,943 |  | $ 1,710,512 |
Short-term investments |  | $ 80,164,823 |  |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  | $ 116,400,000 |  |
Short-term investments |  |  |  |  |  | $ 116,400,000 |  |
Furniture and Fixtures [Member] |  |  |  |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |  |  |  |
Fixed assets, estimated useful life |  | 7 years |  |  |  |  |  |
Company recorded an unrealized gain |  | $ 974 |  |  |  |  |  |
Computers and Software [Member] |  |  |  |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |  |  |  |
Fixed assets, estimated useful life |  | 3 years |  |  |  |  |  |

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