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Lincoln Park Purchase Agreement (Details Narrative) - USD ($)
 9 Months Ended
Oct. 21, 2015
Jun. 30, 2018
Jun. 30, 2017
Number of shares issued   1,896,094 5,951,229
Number of shares issued for aggregate purchase price   1,883,580 5,910,939
Number of shares issued for aggregate purchase price, value   $ 6,966,569 $ 22,431,958
Number of shares issued for commitment   12,514 40,290
Amount of shares remain available   $ 14,404,957 $ 21,371,526
2015 Purchase Agreement [Member] | Lincoln Park Capital Fund, LLC [Member]      
Total number of shares obligated to purchase $ 50,000,000    
Agreement term 36 months    
Description of purchases price

The Company may direct Lincoln Park, at its sole discretion, and subject to certain conditions, to purchase up to 50,000 shares of common stock on any business day, provided that at least one business day has passed since the most recent purchase. The amount of a purchase may be increased under certain circumstances provided, however that Lincoln Park’s committed obligation under any single purchase shall not exceed $2,000,000. The purchase price of shares of common stock related to the future funding will be based on the then prevailing market prices of such shares at the time of sales as described in the 2015 Purchase Agreement.

    
Number of shares issued 179,598    
Pro rata basic number of shares obligated to purchase 89,799