Common and Preferred Stock Reserved for Future Issuances: (Details Textual) - shares
6 Months Ended 12 Months Ended
Feb. 09, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Dec. 31, 2014
Percentage of shares Reserved for Potential Dilution   50.00%      
Conversion of Stock, Shares Issued   193,650 3,787,537 18,524,163 1,419,410
Warrant Holder [Member]          
Conversion of Stock, Shares Issued 1,325,000        
Series A Preferred Stock [Member] | Warrant Holder [Member]          
Conversion of Stock, Shares Converted 1,325,000