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v3.19.1

Consolidated Statements of Changes in Stockholders' Equity - USD ($) | Preferred Stock [Member] Series A Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Total
--- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2016 |  |  | 689,709 |  |  |
Balance at Dec. 31, 2016 |  |  | $ 690 | $ 69,373,231 | $ (60,189,237) | $ 9,184,684
Cumulative effect of change in accounting principle (a) at Dec. 31, 2016 | [1] |  |  | 1,134 | (1,134) |
Sale of Series A convertible preferred stock and common stock warrants (in shares) |  | 12,376,329 |  |  |  |
Sale of Series A convertible preferred stock and common stock warrants |  |  |  |  |  |
Reclassification of the fair market value of the Series A warrants |  |  |  | 13,153,524 |  | $ 13,153,524
Common stock issued for advisory services (in shares) |  |  | 1,174 |  |  | 1,174
Common stock issued for advisory services |  |  | $ 1 | 49,999 |  | $ 50,000
Series A cumulative preferred dividend |  |  |  | (1,252,394) |  | (1,252,394)
Reclassification of accrued dividends upon conversion of Series A (in shares) |  |  | 5,756 |  |  |
Conversion of accrued dividends related to convertible preferred stock |  |  | $ 6 | 190,074 |  | 190,080
Conversion of Series A convertible preferred stock to common stock (in shares) |  | (4,070,051) | 271,337 |  |  |
Conversion of Series A convertible preferred stock to common stock |  |  | $ 271 | (271) |  |
Beneficial conversion feature for accrued interest of convertible debt |  |  |  | 28,017 |  | 28,017
Stock-based compensation expense |  |  |  | 1,240,551 |  | 1,240,551
Net loss |  |  |  |  | (1,364,518) | (1,364,518)
Balance (in shares) at Dec. 31, 2017 |  | 8,306,278 | 967,976 |  |  |
Balance at Dec. 31, 2017 |  |  | $ 968 | 82,783,865 | (61,554,889) | $ 21,229,944
Common stock issued for advisory services (in shares) |  |  | 7,792 |  |  | 7,792
Common stock issued for advisory services |  |  | $ 8 | 49,992 |  | $ 50,000
Series A cumulative preferred dividend |  |  |  | (85,993) |  | (85,993)
Conversion of accrued dividends related to convertible preferred stock |  |  |  |  |  |
Conversion of Series A convertible preferred stock to common stock (in shares) |  | (8,306,278) | 553,752 |  |  |
Conversion of Series A convertible preferred stock to common stock |  |  | $ 554 | (554) |  |
Stock-based compensation expense |  |  |  | 1,221,591 |  | 1,221,591
Net loss |  |  |  |  | (18,369,810) | (18,369,810)
Balance (in shares) at Dec. 31, 2018 |  |  | 3,376,230 |  |  |
Issuance of common stock to Series A convertible preferred stockholders under make-whole adjustment feature (in shares) |  |  | 777,895 |  |  |
Issuance of common stock to Series A convertible preferred stockholders under make-whole adjustment feature |  |  | $ 778 | (778) |  |
Issuance of common stock related to accrued dividends (in shares) |  |  | 68,815 |  |  |
Issuance of common stock related to accrued dividends |  |  | $ 69 | 1,148,238 |  | 1,148,307
Issuance of common stock and warrants, net of issuance costs (in shares) |  |  | 1,000,000 |  |  |
Issuance of common stock and warrants, net of issuance costs |  |  | $ 1,000 | 10,416,520 |  | 10,417,520
Balance at Dec. 31, 2018 |  |  | $ 3,377 | $ 95,532,881 | $ (79,924,699) | $ 15,611,559
[1] | In 2017, the Company adopted provisions of ASU 2016-09, Improvements to Employee Share Based Payment Accounting, resulting in a cumulative effect adjustment to Accumulated Deficit and Additional Paid-in Capital for previously unrecognized stock-based compensation expense.

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