Liquidity and Uncertainties (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Liquidity and Uncertainties (Textual)
Accumulated deficit	$ (195,421,172)	$ (178,988,098)
Losses	$ (16,433,074)	$ (26,829,630)
New ATM agreement, description	The Company has approximately $2.1 million available under its current ATM program and $30.3 million available under its current shelf registration for the issuance of equity, debt or equity-linked securities unrelated to the current ATM program.
Net operating loss, description	The Company's existing cash and cash equivalents at December 31, 2019 are expected to fund its operations into the second quarter of 2021, after taking into consideration the net proceeds received through March 12, 2020 from the At-the-Market Issuance Sales Agreement (the "ATM program") of $2.5 million and the exercise of warrants of $0.4 million (see Note 11).