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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, 2017 $ 7,038 $ 64,923,735 $ (2,157,226) $ (61,909,799) $ 863,748
Balance, shares at Dec. 31, 2017 7,037,799        
Cumulative effects of adjustment for adoption of ASC 606 71,444 71,444
Stock-based compensation 493,519 493,519
Restricted common stock grant $ 84 (84)
Restricted common stock grant, shares 84,500        
Restricted common stock forfeitures $ (26) 26
Restricted common stock forfeitures, shares (26,450)        
Issuance of common purchase warrants in connection with the issuance of subordinated notes payable 47,657 47,657
Net loss (2,588,232) (2,588,232)
Balance at Mar. 31, 2018 $ 7,096 65,464,853 (2,157,226) (64,426,587) (1,111,864)
Balance, shares at Mar. 31, 2018 7,095,849        
Balance at Dec. 31, 2017 $ 7,038 64,923,735 (2,157,226) (61,909,799) 863,748
Balance, shares at Dec. 31, 2017 7,037,799        
Net loss         (10,216,702)
Balance at Sep. 30, 2018 $ 10,425 77,538,983 (2,157,226) (72,055,057) 3,337,125
Balance, shares at Sep. 30, 2018 10,424,752        
Balance at Dec. 31, 2017 $ 7,038 64,923,735 (2,157,226) (61,909,799) 863,748
Balance, shares at Dec. 31, 2017 7,037,799        
Net loss         15,500,000
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        
Balance at Mar. 31, 2018 $ 7,096 65,464,853 (2,157,226) (64,426,587) (1,111,864)
Balance, shares at Mar. 31, 2018 7,095,849        
Stock-based compensation 594,227 594,227
Restricted common stock grant $ 100 (100)
Restricted common stock grant, shares 100,000        
Restricted common stock forfeitures $ (4) 4
Restricted common stock forfeitures, shares (3,950)        
Issuance of common stock purchase warrants in connection with the issuance of secured convertible debentures 1,684,251 1,684,251
Issuance of stock upon conversion of secured convertible debentures and accrued interest $ 74 185,614 185,688
Issuance of stock upon conversion of secured convertible debentures and accrued interest, shares 74,276        
Issuance of common stock upon exercise of common stock purchase warrants $ 20 48,980 49,000
Issuance of common stock upon exercise of common stock purchase warrants, shares 20,000        
Net loss (2,962,890) (2,962,890)
Balance at Jun. 30, 2018 $ 7,286 67,977,829 (2,157,226) (67,389,477) (1,561,588)
Balance, shares at Jun. 30, 2018 7,286,175        
Stock-based compensation 669,481 669,481
Restricted common stock grant $ 301 (301)
Restricted common stock grant, shares 300,000        
Restricted common stock forfeitures $ (4) 4
Restricted common stock forfeitures, shares (3,500)        
Issuance of stock upon conversion of secured convertible debentures and accrued interest $ 43 107,957 108,000
Issuance of stock upon conversion of secured convertible debentures and accrued interest, shares 43,200        
Issuance of common stock upon exercise of common stock purchase warrants $ 152 376,073 376,225
Issuance of common stock upon exercise of common stock purchase warrants, shares 151,738        
Issuance of common stock through underwritten public offering (net of offering expenses and underwriters' discount) $ 2,600 7,322,300 7,324,900
Issuance of common stock through underwritten public offering (net of offering expenses and underwriters' discount), shares 2,600,000        
Issuance of common stock purchase warrants in connection with issuance of proceeds investment agreement 932,487 932,487
Issuance of common stock upon conversion of secured notes payable and accrued interest $ 47 153,153 153,200
Issuance of common stock upon conversion of secured notes payable and accrued interest, shares 47,139        
Net loss (4,665,580) (4,665,580)
Balance at Sep. 30, 2018 $ 10,425 77,538,983 (2,157,226) (72,055,057) 3,337,125
Balance, shares at Sep. 30, 2018 10,424,752        
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         (6,578,729)
Balance at Sep. 30, 2019 $ 12,079 82,748,400 (2,157,226) (83,961,635) (3,358,382)
Balance, shares at Sep. 30, 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        
Stock-based compensation 405,579 405,579
Restricted common stock forfeitures $ (3) 3
Restricted common stock forfeitures, shares (2,870)        
Issuance of common stock purchase warrants related to secured convertible notes 535,739 535,739
Issuance of common stock upon conversion of secured convertible notes and interest $ 499 697,568 698,067
Issuance of common stock upon conversion of secured convertible notes and interest, shares 498,625        
Issuance of common stock related to the issuance of secured convertible notes $ 89 118,660 118,749
Issuance of common stock related to the issuance of secured convertible notes, shares 89,285        
Net loss (2,985,825) (2,985,825)
Balance at Sep. 30, 2019 $ 12,079 $ 82,748,400 $ (2,157,226) $ (83,961,635) $ (3,358,382)
Balance, shares at Sep. 30, 2019 12,079,095