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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, 2018 $ 10,445 $ 78,117,507 $ (2,157,226) $ (77,382,906) $ (1,412,180)
Balance, shares at Dec. 31, 2018 10,445,445        
Stock-based compensation 725,198 725,198
Restricted common stock grant $ 522 (522)
Restricted common stock grant, shares 522,110        
Restricted common stock forfeitures $ (2) 2
Restricted common stock forfeitures, shares (2,500)        
Issuance of common stock upon exercise of common stock purchase warrants $ 161 515,839 516,000
Issuance of common stock upon exercise of common stock purchase warrants, shares 161,000        
Net loss (3,205,174) (3,205,174)
Balance at Mar. 31, 2019 $ 11,126 79,358,024 (2,157,226) (80,588,080) (3,376,156)
Balance, shares at Mar. 31, 2019 11,126,055        
Balance at Dec. 31, 2018 $ 10,445 78,117,507 (2,157,226) (77,382,906) (1,412,180)
Balance, shares at Dec. 31, 2018 10,445,445        
Net loss         (3,592,904)
Balance at Jun. 30, 2019 $ 11,494 80,990,851 (2,157,226) (80,975,810) (2,130,691)
Balance, shares at Jun. 30, 2019 11,494,055        
Balance at Dec. 31, 2018 $ 10,445 78,117,507 (2,157,226) (77,382,906) (1,412,180)
Balance, shares at Dec. 31, 2018 10,445,445        
Net loss         10,000,000
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        
Balance at Mar. 31, 2019 $ 11,126 79,358,024 (2,157,226) (80,588,080) (3,376,156)
Balance, shares at Mar. 31, 2019 11,126,055        
Stock-based compensation 585,195 585,195
Issuance of common stock upon exercise of common stock purchase warrants $ 368 1,047,632 1,048,000
Issuance of common stock upon exercise of common stock purchase warrants, shares 368,000        
Net loss (387,730) (387,730)
Balance at Jun. 30, 2019 $ 11,494 80,990,851 (2,157,226) (80,975,810) (2,130,691)
Balance, shares at Jun. 30, 2019 11,494,055        
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 through underwritten public offering at $1.65 per share (net of offering expenses and underwriters' discount) $ 2,522 2,499,614 2,502,136
Issuance of common stock through underwritten public offering at $1.65 per share (net of offering expenses and underwriters' discount), shares 2,521,740        
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 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, 2019 $ 12,079 83,216,387 (2,157,226) (87,388,619) (6,317,379)
Balance, shares at Dec. 31, 2019 12,079,095        
Net loss         (2,832,004)
Balance at Jun. 30, 2020 $ 26,645 105,697,031 (2,157,226) (90,220,623) 13,345,827
Balance, shares at Jun. 30, 2020 26,645,118        
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        
Stock-based compensation 376,738 376,738
Restricted common stock grant $ 135 (135)
Restricted common stock grant, shares 135,450        
Restricted common stock forfeitures $ (13) 13
Restricted common stock forfeitures, shares (12,750)        
Issuance of common stock through underwritten public offering at $1.65 per share (net of offering expenses and underwriters' discount) $ 3,554 5,346,859 5,350,413
Issuance of common stock through underwritten public offering at $1.65 per share (net of offering expenses and underwriters' discount), shares 3,554,545        
Issuance of common stock through underwritten public offering at $2.15 per share (net of offering expenses and underwriters' discount) $ 2,540 4,974,152 4,976,692
Issuance of common stock through underwritten public offering at $2.15 per share (net of offering expenses and underwriters' discount), shares 2,539,534        
Issuance of common stock upon conversion of secured convertible notes and interest $ 1,665 1,679,660 1,681,325
Issuance of common stock upon conversion of secured convertible notes and interest, shares 1,664,669        
Issuance of common stock upon exercise of common stock purchase warrants $ 2,694 5,200,428 5,203,122
Issuance of common stock upon exercise of common stock purchase warrants, shares 2,693,867        
Issuance of common stock upon exercise of stock options $ 2 7,798 7,800
Issuance of common stock upon exercise of stock options, shares 1,875        
Issuance of common stock purchase warrants in connection with issuance of secured convertible notes 721,141 721,141
Net loss (497,894) (497,894)
Balance at Jun. 30, 2020 $ 26,645 $ 105,697,031 $ (2,157,226) $ (90,220,623) $ 13,345,827
Balance, shares at Jun. 30, 2020 26,645,118