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Shareholders' Equity (Details 2) - Stock warrants [Member]
3 Months Ended
Mar. 31, 2018
$ / shares
shares
Class of Stock [Line Items]  
Number of Shares, Outstanding, Beginning Balance 13,154,872
Number of Shares, Granted 5,519,143
Number of Shares, Exercised (2,500)
Number of Shares, Outstanding, Ending Balance 18,671,515
Number of Shares, Warrants exercisable 18,671,515
Average Exercise Price, Outstanding, Beginning Balance | $ / shares $ 2.21
Average Exercise Price, Granted | $ / shares 0.95
Average Exercise Price, Exercised | $ / shares 1.90
Average Exercise Price, Outstanding, Ending Balance | $ / shares $ 1.84
Expiration Date, Granted February, 2023