Condensed Consolidated Statements of Operations - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Dec. 31, 2014
OPERATING EXPENSES:            
Research and development - related party $ 264,558 $ 615,881 $ 514,558 $ 1,215,881 $ 2,023,595 $ 2,223,643
Research and development 925,942 586,821 1,818,679 1,079,478 2,180,263 1,242,706
General and administrative - related party 27,000 27,000 54,000 54,000 804,022 108,693
General and administrative 767,649 1,237,982 1,523,001 2,424,340 3,714,943 4,488,415
Stock-based compensation - related party 43,818 43,818 87,635 87,154 175,752 252,868
Stock-based compensation 165,823 139,375 327,052 157,861 547,182 950,795
TOTAL OPERATING EXPENSES 2,194,790 2,650,877 4,324,925 5,018,714 9,445,757 9,267,120
OTHER INCOME:            
Interest income 1,856 921 3,934 2,489 4,222 13,797
Net loss before income taxes (2,192,934) (2,649,956) (4,320,991) (5,016,225) (9,441,535) (9,253,323)
Provision for income taxes 0 0 0 0 0 0
Net loss (2,192,934) (2,649,956) (4,320,991) (5,016,225) (9,441,535) (9,253,323)
Preferred Stock dividends (504,712) (339,146) (1,024,752) (674,565) (279,824) (1,664,219)
Net loss attributable to common shareholders $ (2,697,646) $ (2,989,102) $ (5,345,743) $ (5,690,790) $ (9,721,359) $ (10,917,542)
PER SHARE DATA:            
Basic and diluted loss per common share $ (0.05) $ (0.11) $ (0.11) $ (0.22) $ (0.36) $ (0.49)
Basic and diluted weighted average common shares outstanding 49,373,000 27,623,000 49,237,000 25,829,000 26,725,000 22,107,000