Stockholders' Equity (Details Textual) - $ / shares	12 Months Ended
	Dec. 31, 2017	Mar. 31, 2018
Common Stock, Shares Authorized	500,000,000	500,000,000
Common Stock, Shares, Issued	46,617,093	51,046,394
Stock Issued During Period, Shares, Period Increase (Decrease)	4,429,301
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 1.45	$ 1.45
Class of Warrant or Right, Outstanding	18,135,832	13,292,048
Warrants - Fundraising [Member]
Class of Warrant or Right, Outstanding	18,039,312	13,195,528