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Equity Instruments (Details 3)
 9 Months Ended
Mar. 31, 2018
$ / shares
shares
Number of Warrants  
Number of Warrants Outstanding, Beginning Balance | shares 286,049
Warrants issued in connection with the August 2017 private offering | shares 5,920,002
Warrants issued to underwriters in connection with the August 2017 private offering | shares 394,669
Warrants issued in connection with the March 2018 public offering | shares 30,666,667
Warrants issued to investor | shares 2,000,000
Warrants exercised | shares (1,547,000)
Number of Warrants Outstanding, Ending Balance | shares 37,720,387
Weighted Average Exercise Price  
Weighted Average Exercise Price, Outstanding Beginning Balance | $ / shares $ 50.29
Warrants issued in connection with the August 2017 private offering | $ / shares 3.60
Warrants issued to underwriters in connection with the August 2017 private offering | $ / shares 3.60
Warrants issued in connection with the March 2018 public offering | $ / shares 0.54
Warrants issued to investor | $ / shares 0.54
Warrants exercised | $ / shares 0.41
Weighted Average Exercise Price, Outstanding Ending Balance | $ / shares $ 1.31
Weighted Average Remaining Contractual Life in Years  
Weighted Average Remaining Contractual Life in Years, Outstanding, Beginning Balance 4 years 2 months 23 days
Weighted Average Remaining Contractual Life in Years, Outstanding, Ending Balance 4 years 10 months 6 days