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Consolidated Statements of Changes in Stockholders' Equity - USD ($) | Total | 0.01 Par Value Common Stock | Preferred Stock | Additional Paid-in Capital | Accumulated Deficit
--- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2016 | $ 5,433,295 | $ 1,639 | $ 1,801,670 | $ 4,936,562 | $ (1,306,576)
Beginning Balance, Shares at Dec. 31, 2016 |  | 163,901 |  |  |
Stock-based compensation | 701,402 |  |  | 701,402 |
Exercise of stock options | $ 8,409 | $ 28 |  | 8,381 |
Exercise of stock options, Shares | 2,803 | 2,803 |  |  |
Conversion of preferred stock |  | $ 18,017 | (1,801,670) | 1,783,653 |
Conversion of preferred stock, Shares |  | 1,801,670 |  |  |
Issuance of common stock, net of issuance costs | 7,059,614 | $ 17,250 |  | 7,042,364 |
Issuance of common stock, net of issuance costs, Shares |  | 1,725,000 |  |  |
Issuance of common stock for services | 254,500 | $ 500 |  | 254,000 |
Issuance of common stock for services, Shares |  | 50,000 |  |  |
Conversion of convertible debentures | 2,583,334 | $ 5,167 |  | 2,578,167 |
Conversion of convertible debentures, Shares |  | 516,667 |  |  |
Net loss | (4,512,680) |  |  |  | (4,512,680)
Ending Balance at Dec. 31, 2017 | 11,527,874 | $ 42,601 |  | 17,304,529 | (5,819,256)
Ending Balance, Shares at Dec. 31, 2017 |  | 4,260,041 |  |  |
Stock-based compensation | $ 396,214 |  |  | 396,214 |
Exercise of stock options, Shares |  |  |  |  |
Net loss | $ (4,844,021) |  |  |  | (4,844,021)
Ending Balance at Dec. 31, 2018 | $ 7,080,067 | $ 42,601 |  | $ 17,700,743 | $ (10,663,277)
Ending Balance, Shares at Dec. 31, 2018 |  | 4,260,041 |  |  |

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