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Stockholders' Equity (Detail 1)
 6 Months Ended
Jun. 30, 2018
$ / shares
shares
Warrants Outstanding | shares 2,495,784
Warrants Outstanding Weighted Average Exercise Price $ 3.98
Exercise Price 1.80 [Member]  
Warrants Exercise Price $ 1.80
Warrants Outstanding | shares 80,000
Warrants Outstanding Weighted Average Exercise Price $ 1.80
Warrants Outstanding Remaining Life (in years) 2 years 7 months 20 days
Exercise Price 4.00 [Member]  
Warrants Exercise Price $ 4.00
Warrants Outstanding | shares 2,395,471
Warrants Outstanding Weighted Average Exercise Price $ 4.00
Warrants Outstanding Remaining Life (in years) 6 months 25 days
Exercise Price 10.00 [Member]  
Warrants Exercise Price $ 10.00
Warrants Outstanding | shares 20,313
Warrants Outstanding Weighted Average Exercise Price $ 10.00
Warrants Outstanding Remaining Life (in years) 8 months 5 days