Stockholders' Equity (Details 4)	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Number of Warrants
Number of Shares Underlying Warrants, Beginning	3,319,008
Number of Shares Underlying Warrants, Issued
Number of Shares Underlying Warrants, Exercised	(1,948,207)
Number of Shares Shares Underlying Warrants, Canceled in connection with the Exchange Agreement	(892,973)
Number of Shares Shares Underlying Warrants, Expired	(136,500)
Number of Shares Shares Underlying Warrants, Ending	341,328
Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning | $ / shares	$ 5.50
Weighted Average Exercise Price, Issued
Weighted Average Exercise Price, Exercised	4.45
Weighted Average Exercise Price, Canceled in connection with the Exchange Agreement	4.68
Weighted Average Exercise Price, Expired	12.50
Weighted Average Exercise Price, Ending | $ / shares	$ 6.24
Weighted Average Remaining Contractual Life
Weighted Average Remaining Contractual Life, Beginning	3 years 1 month 6 days
Weighted Average Remaining Contractual Life, Ending	1 year 5 months 1 day