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