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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Beginning balance, value at Dec. 31, 2018 $ 240,463 $ 616,559,938 $ (519,276,280) $ 97,524,121
Beginning balance, shares at Dec. 31, 2018 240,462,439      
Shares issued for exercise of options and warrants, net $ 759 99,348 100,107
Shares issued for exercise of options and warrants, net (in shares) 759,401      
Share-based compensation 2,575,369 2,575,369
Net loss (39,506,375) (39,506,375)
Ending balance, value at Mar. 31, 2019 $ 241,222 619,234,655 (558,782,655) 60,693,222
Ending balance, shares at Mar. 31, 2019 241,221,840      
Beginning balance, value at Dec. 31, 2018 $ 240,463 616,559,938 (519,276,280) 97,524,121
Beginning balance, shares at Dec. 31, 2018 240,462,439      
Net loss       (126,709,485)
Ending balance, value at Sep. 30, 2019 $ 241,277 624,515,559 (645,985,765) (21,228,929)
Ending balance, shares at Sep. 30, 2019 241,277,076      
Beginning balance, value at Mar. 31, 2019 $ 241,222 619,234,655 (558,782,655) 60,693,222
Beginning balance, shares at Mar. 31, 2019 241,221,840      
Share-based compensation 2,637,264 2,637,264
Net loss (55,236,517) (55,236,517)
Ending balance, value at Jun. 30, 2019 $ 241,222 621,871,919 (614,019,172) 8,093,969
Ending balance, shares at Jun. 30, 2019 241,221,840      
Shares issued for exercise of options and warrants, net $ 55 8,494 8,549
Shares issued for exercise of options and warrants, net (in shares) 55,236      
Share-based compensation 2,635,146 2,635,146
Net loss (31,966,593) (31,966,593)
Ending balance, value at Sep. 30, 2019 $ 241,277 624,515,559 (645,985,765) (21,228,929)
Ending balance, shares at Sep. 30, 2019 241,277,076      
Beginning balance, value at Dec. 31, 2019 $ 271,177 704,351,222 (695,421,279) $ 9,201,120
Beginning balance, shares at Dec. 31, 2019 271,177,076     271,177,076
Shares issued for exercise of options and warrants, net $ 351 71,758 $ 72,109
Shares issued for exercise of options and warrants, net (in shares) 350,666      
Share-based compensation 2,366,453 2,366,453
Net loss (56,848,802) (56,848,802)
Ending balance, value at Mar. 31, 2020 $ 271,678 706,789,283 (752,270,081) (45,209,120)
Ending balance, shares at Mar. 31, 2020 271,677,742      
Issuance of shares from release of restricted stock $ 150 (150)
Issuance of shares from release of restricted stock (in shares) 150,000      
Beginning balance, value at Dec. 31, 2019 $ 271,177 704,351,222 (695,421,279) $ 9,201,120
Beginning balance, shares at Dec. 31, 2019 271,177,076     271,177,076
Net loss       $ (141,436,540)
Ending balance, value at Sep. 30, 2020 $ 272,812 720,551,488 (836,857,819) $ (116,033,519)
Ending balance, shares at Sep. 30, 2020 272,812,271     272,812,271
Beginning balance, value at Mar. 31, 2020 $ 271,678 706,789,283 (752,270,081) $ (45,209,120)
Beginning balance, shares at Mar. 31, 2020 271,677,742      
Shares issued for exercise of options and warrants, net $ 313 93,762 94,075
Shares issued for exercise of options and warrants, net (in shares) 313,638      
Share-based compensation 3,002,826 3,002,826
Net loss (51,976,664) (51,976,664)
Ending balance, value at Jun. 30, 2020 $ 272,294 709,885,568 (804,246,745) (94,088,883)
Ending balance, shares at Jun. 30, 2020 272,294,380      
Issuance of shares from release of restricted stock $ 303 (303)
Issuance of shares from release of restricted stock (in shares) 303,000      
Shares issued for exercise of options and warrants, net $ 518 104,976 105,494
Shares issued for exercise of options and warrants, net (in shares) 517,891      
Share-based compensation 3,132,765 3,132,765
Net loss (32,611,074) (32,611,074)
Ending balance, value at Sep. 30, 2020 $ 272,812 720,551,488 (836,857,819) $ (116,033,519)
Ending balance, shares at Sep. 30, 2020 272,812,271     272,812,271
Warrant granted in relation to Financing Agreement $ 7,428,179 $ 7,428,179