Condensed Statements of Changes in Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands | Common Stock [Member] | Preferred Stock [Member] | Common Stock Issuable [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Total |
Beginning balance, value at Dec. 31, 2018 | $ 3 | $ 94 | | $ 53,591 | $ (60,431) | $ (6,743) |
Shares, Outstanding, Beginning Balance at Dec. 31, 2018 | 25,729,461 | 9,411 | | | | |
Fair value of vested options | | | | 1,077 | | 1,077 |
Dividends on Series A Convertible Preferred Stock | | | | | (5) | (5) |
Dividends on Series A Convertible Preferred Stock, shares | | | | | | |
Fair value of vested restricted shares granted to an officer for services | | | | 405 | | 405 |
Fair value of vested restricted shares granted to officers for services, shares | | | | | | |
Common shares issued pursuant to the rights offering, net of offering costs | | | | 14,867 | | 14,867 |
Common shares issued pursuant to the rights offering, net of offering costs, shares | 7,733,750 | | | | | |
Shares granted to Directors for services | | | | 115 | | 115 |
Shares granted to Directors for services, shares | 33,796 | | | | | |
Exercise of warrants | | | | 365 | | 365 |
Exercise of warrants, shares | 223,037 | | | | | |
Net Loss | | | | | (12,289) | (12,289) |
Ending balance, value at Sep. 30, 2019 | $ 3 | $ 94 | | 70,420 | (72,725) | (2,208) |
Shares, Outstanding, Ending Balance at Sep. 30, 2019 | 33,720,044 | 9,411 | | | | |
Beginning balance, value at Jun. 30, 2019 | $ 3 | $ 94 | | 70,051 | (68,160) | 1,988 |
Shares, Outstanding, Beginning Balance at Jun. 30, 2019 | 33,708,826 | 9,411 | | | | |
Fair value of vested options | | | | 223 | | 223 |
Fair value of vested restricted shares granted to an officer for services | | | | 116 | | 116 |
Shares granted to Directors for services | | | | 29 | | 29 |
Shares granted to Directors for services, shares | 8,072 | | | | | |
Exercise of warrants | | | | 1 | | 1 |
Exercise of warrants, shares | 3,146 | | | | | |
Net Loss | | | | | (4,565) | (4,565) |
Ending balance, value at Sep. 30, 2019 | $ 3 | $ 94 | | 70,420 | (72,725) | (2,208) |
Shares, Outstanding, Ending Balance at Sep. 30, 2019 | 33,720,044 | 9,411 | | | | |
Beginning balance, value at Dec. 31, 2019 | $ 5 | $ 94 | | 77,596 | (76,548) | 1,147 |
Shares, Outstanding, Beginning Balance at Dec. 31, 2019 | 47,595,206 | 9,411 | | | | |
Fair value of vested options | | | | 722 | | 722 |
Common shares issued on exercise of options | | | | 14 | | $ 14 |
Common shares issued on exercise of options, shares | 27,500 | | | | | 27,500 |
Dividends on Series A Convertible Preferred Stock | | | | 5 | (5) | |
Dividends on Series A Convertible Preferred Stock, shares | 4,530 | | | | | |
Fair value of vested restricted shares granted to an officer for services | | | $ 285 | | | 285 |
Fair value of vested restricted shares granted to officers for services, shares | | | 350,000 | | | |
Common shares issued pursuant to the rights offering, net of offering costs | $ 1 | | | 5,309 | | 5,310 |
Common shares issued pursuant to the rights offering, net of offering costs, shares | 15,333,334 | | | | | |
Exercise of warrants, shares | | | | | | |
Net Loss | | | | | (6,920) | (6,920) |
Ending balance, value at Sep. 30, 2020 | $ 6 | $ 94 | $ 285 | 83,646 | (83,473) | 558 |
Shares, Outstanding, Ending Balance at Sep. 30, 2020 | 62,960,570 | 9,411 | 350,000 | | | |
Beginning balance, value at Jun. 30, 2020 | $ 6 | $ 94 | $ 285 | 83,364 | (80,883) | 2,866 |
Shares, Outstanding, Beginning Balance at Jun. 30, 2020 | 62,928,540 | 9,411 | 350,000 | | | |
Fair value of vested options | | | | 263 | | 263 |
Common shares issued on exercise of options | | | | 14 | | 14 |
Common shares issued on exercise of options, shares | 27,500 | | | | | |
Dividends on Series A Convertible Preferred Stock | | | | 5 | | 5 |
Dividends on Series A Convertible Preferred Stock, shares | 4,530 | | | | | |
Fair value of vested restricted shares granted to officers for services, shares | | | | | | |
Exercise of warrants | | | | | | |
Exercise of warrants, shares | | | | | | |
Net Loss | | | | | (2,590) | (2,590) |
Ending balance, value at Sep. 30, 2020 | $ 6 | $ 94 | $ 285 | $ 83,646 | $ (83,473) | $ 558 |
Shares, Outstanding, Ending Balance at Sep. 30, 2020 | 62,960,570 | 9,411 | 350,000 | | | |