XML 16 R5.htm IDEA: XBRL DOCUMENT v3.19.1
Unaudited Statements of Stockholders' Equity - USD ($)
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Total
Balance at Dec. 31, 2017 $ 34,358 $ 271,944,173 $ (152,277,106) $ 119,701,425
Balance, shares at Dec. 31, 2017 34,359,799      
Issuance of common stock, net of issuance costs $ 8,050 128,427,950   128,436,000
Issuance of common stock, net of issuance costs, shares 8,050,000      
Exercise of options and warrants $ 81 298,708   298,789
Exercise of options and warrants, shares 80,311      
Stock-based compensation   1,115,830   1,115,830
Net loss     (11,512,844) (11,512,844)
Balance at Mar. 31, 2018 $ 42,489 401,786,661 (163,789,950) 238,039,200
Balance, shares at Mar. 31, 2018 42,490,110      
Balance at Dec. 31, 2018 $ 43,159 405,972,075 (200,550,739) 205,464,495
Balance, shares at Dec. 31, 2018 43,160,751      
Exercise of options $ 20 30,534   30,554
Exercise of options, shares 19,418      
Stock-based compensation   1,382,443   1,382,443
Net loss     (14,083,897) (14,083,897)
Balance at Mar. 31, 2019 $ 43,179 $ 407,385,052 $ (214,634,636) $ 192,793,595
Balance, shares at Mar. 31, 2019 43,180,169