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Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($)
Common Stock [Member]
Additional Paid in Capital [Member]
Treasury Stock [Member]
Accumulated Deficit [Member]
Total
Balance at Dec. 31, 2019 $ 12,079 $ 83,216,387 $ (2,157,226) $ (87,388,619) $ (6,317,379)
Balance, shares at Dec. 31, 2019 12,079,095        
Stock-based compensation 311,677 311,677
Restricted common stock grant $ 530 (530)
Restricted common stock grant, shares 530,050        
Restricted common stock forfeitures $ (23) 23
Restricted common stock forfeitures, shares (22,500)        
Issuance of common stock upon conversion of secured convertible notes and interest $ 960 1,342,400 1,343,360
Issuance of common stock upon conversion of secured convertible notes and interest, shares 959,543        
Issuance of common stock through underwritten public offering (net of offering expenses and underwriters' discount) $ 2,522 2,499,614 2,502,136
Issuance of common stock through underwritten public offering (net of offering expenses and underwriters' discount), shares 2,521,740        
Issuance of common stock purchase warrants in connection with issuance of unsecured promissory note payable 20,806 20,806
Net loss (2,334,110) (2,334,110)
Balance at Mar. 31, 2020 $ 16,068 87,390,377 (2,157,226) (89,722,729) (4,473,510)
Balance, shares at Mar. 31, 2020 16,067,928        
Balance at Dec. 31, 2020 $ 26,835 106,501,396 (2,157,226) (90,014,500) 14,356,505
Balance, shares at Dec. 31, 2020 26,834,709        
Stock-based compensation 326,164 326,164
Restricted common stock grant $ 450 (450)
Restricted common stock grant, shares 450,000        
Restricted common stock forfeitures $ (8) 8
Restricted common stock forfeitures, shares (7,500)        
Issuance of common stock through registered direct offering at $3.095 per share and accompanying warrants (net of offering expenses and placement agent discount) $ 2,800 6,726,200 6,729,000
Issuance of common stock through registered direct offering at $3.095 per share and accompanying warrants (net of offering expenses and placement agent discount), shares 2,800,000        
Issuance of common stock through registered direct offering at $2.80 per share and accompanying warrants (net of offering expenses and placement agent discount) $ 3,250 6,614,350 6,617,600
Issuance of common stock through registered direct offering at $2.80 per share and accompanying warrants (net of offering expenses and placement agent discount), shares 3,250,000        
Exercise of pre-funded common stock purchase warrants at $3.095 per share $ 7,200 22,276,800 22,284,000
Exercise of pre-funded common stock purchase warrants at $3.095 per share, shares 7,200,000        
Exercise of pre-funded common stock purchase warrants at $2.80 per share $ 11,050 30,928,950 30,940,000
Exercise of pre-funded common stock purchase warrants at $2.80 per share, shares 11,050,000        
Issuance of pre-funded common stock purchase warrants in connection with the registered direct offerings (1,817,548) (1,817,548)
Issuance of common stock purchase warrants at exercise price of $3.25 per share in connection with the registered direct offerings (49,398,510) (49,398,510)
Net loss 21,721,858 21,721,858
Balance at Mar. 31, 2021 $ 51,577 $ 122,157,360 $ (2,157,226) $ (68,292,642) $ 51,759,069
Balance, shares at Mar. 31, 2021 51,577,209