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Warrants to Purchase Common Stock (Details)
3 Months Ended
Mar. 31, 2018
$ / shares
shares
Warrants  
Warrants Outstanding, Beginning Balance | shares 828,221
Warrants Outstanding, Ending Balance | shares 828,221
Warrants Exercisable at end | shares 828,221
Weighted Avg. Exercise Price  
Weighted Avg. Exercise Price Outstanding, Beginning Balance | $ / shares $ 1.51
Weighted Avg. Exercise Price Outstanding, Ending balance | $ / shares 1.51
Weighted Avg. Exercise Price Exercisable at end | $ / shares $ 1.51
Weighted-Average Remaining Contractual Term  
Weighted-Average Remaining Contractual Term Outstanding 6 years 1 month 6 days
Weighted-Average Remaining Contractual Term Exercisable at end 6 years 1 month 6 days