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Consolidated Statements of Stockholders' Equity - USD ($) | Conversion of A1 Preferred Stock to Common Stock [Member] Preferred Stock [Member] Series A-1 Convertible Preferred Stock [Member] | Conversion of A1 Preferred Stock to Common Stock [Member] Common Stock [Member] | Conversion of A1 Preferred Stock to Common Stock [Member] Additional Paid-in Capital [Member] | Conversion of A1 Preferred Stock to Common Stock [Member] Retained Earnings [Member] | Conversion of A1 Preferred Stock to Common Stock [Member] | Conversion of B1 Preferred Stock to Common Stock [Member] Preferred Stock [Member] Series B-1 Convertible Preferred Stock [Member] | Conversion of B1 Preferred Stock to Common Stock [Member] Common Stock [Member] | Conversion of B1 Preferred Stock to Common Stock [Member] Additional Paid-in Capital [Member] | Conversion of B1 Preferred Stock to Common Stock [Member] Retained Earnings [Member] | Conversion of B1 Preferred Stock to Common Stock [Member] | Preferred Stock [Member] Series A-1 Convertible Preferred Stock [Member] | Preferred Stock [Member] Series B-1 Convertible Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Series A-1 Convertible Preferred Stock [Member] | Series B-1 Convertible Preferred Stock [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2016 |  |  |  |  |  |  |  |  |  |  | 90,000 | 105,000 | 6,093,843 |  |  | 90,000 | 105,000 |
Balance at Dec. 31, 2016 |  |  |  |  |  |  |  |  |  |  | $ 9 | $ 11 | $ 609 | $ 78,253,413 | $ (62,801,154) |  |  | $ 15,452,888
Issuance of common stock for directors’ fees (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 11,244 |  |  |  |  | 1,610
Issuance of common stock for directors’ fees |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 | 32,029 |  |  |  | $ 32,030
Issuance of common stock pursuant to securities purchase agreement (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 555,556 |  |  |  |  |
Issuance of common stock pursuant to securities purchase agreement |  |  |  |  |  |  |  |  |  |  |  |  | $ 56 | 1,999,944 |  |  |  | 2,000,000
Dividends declared on preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  | (769,158) |  |  |  | (769,158)
Conversion of dividends payable on A-1 preferred stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 150,000 |  |  |  |  |
Conversion of dividends payable on A-1 preferred stock |  |  |  |  |  |  |  |  |  |  |  |  | $ 15 | 539,985 |  |  |  | 540,000
Conversion of preferred stock to common stock, Converted (in shares) | (27,404) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of preferred stock to common stock, Converted | $ (3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of preferred stock to common stock (in shares) |  | 761,222 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of preferred stock to common stock |  | $ 76 | $ (73) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of stock for consultants (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 117,849 |  |  |  |  |
Issuance of stock for consultants |  |  |  |  |  |  |  |  |  |  |  |  | $ 12 | 354,573 |  |  |  | 354,585
Stock issuance costs |  |  |  |  |  |  |  |  |  |  |  |  |  | (80,366) |  |  |  | $ (80,366)
Exercise of stock options (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 1,610 |  |  |  |  | 4,167
Share-based compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | 498,654 |  |  |  | $ 498,654
Net loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (4,275,338) |  |  | (4,275,338)
Conversion of preferred stock to common stock, Converted (in shares) | 27,404 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of preferred stock to common stock, Converted | $ 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2017 |  |  |  |  |  |  |  |  |  |  | 62,596 | 105,000 | 7,691,324 |  |  | 62,596 | 105,000 |
Balance at Dec. 31, 2017 |  |  |  |  |  |  |  |  |  |  | $ 6 | $ 11 | $ 769 | 80,829,001 | (67,076,492) |  |  | 13,753,295
Issuance of common stock for directors’ fees (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 20,976 |  |  |  |  |
Issuance of common stock for directors’ fees |  |  |  |  |  |  |  |  |  |  |  |  | $ 2 | 37,530 |  |  |  | 37,532
Issuance of common stock pursuant to securities purchase agreement (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 1,380,000 |  |  |  |  |
Issuance of common stock pursuant to securities purchase agreement |  |  |  |  |  |  |  |  |  |  |  |  | $ 138 | 2,069,862 |  |  |  | 2,070,000
Dividends declared on preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  | (198,033) |  |  |  | (198,033)
Conversion of dividends payable on A-1 preferred stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 98,893 |  |  |  |  |
Conversion of dividends payable on A-1 preferred stock |  |  |  |  |  |  |  |  |  |  |  |  | $ 10 | 356,005 |  |  |  | 356,015
Conversion of preferred stock to common stock, Converted (in shares) | 62,596 |  |  |  |  | 105,000 |  |  |  |  |  |  |  |  |  |  |  |
Conversion of preferred stock to common stock, Converted | $ 6 |  |  |  |  | $ 11 |  |  |  |  |  |  |  |  |  |  |  |
Conversion of preferred stock to common stock (in shares) |  | 1,738,778 |  |  |  |  | 2,916,668 |  |  |  |  |  |  |  |  |  |  |
Conversion of preferred stock to common stock |  | $ 174 | $ (168) |  |  |  | $ 292 | $ (281) |  |  |  |  |  |  |  |  |  |
Stock issuance costs |  |  |  |  |  |  |  |  |  |  |  |  |  | (338,845) |  |  |  | $ (338,845)
Exercise of stock options (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0
Share-based compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | 942,692 |  |  |  | $ 942,692
Net loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (6,868,875) |  |  | (6,868,875)
Adoption of ASC 606 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 240,017 |  |  | 240,017
Conversion of preferred stock to common stock, Converted (in shares) | (62,596) |  |  |  |  | (105,000) |  |  |  |  |  |  |  |  |  |  |  |
Conversion of preferred stock to common stock, Converted | $ (6) |  |  |  |  | $ (11) |  |  |  |  |  |  |  |  |  |  |  |
Conversion of dividends payable on B-1 preferred stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 131,229 |  |  |  |  |
Conversion of dividends payable on B-1 preferred stock |  |  |  |  |  |  |  |  |  |  |  |  | $ 13 | 472,411 |  |  |  | 472,424
Deemed dividend related to down-round features |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,428,966 | (1,428,966) |  |  |
Balance (in shares) at Dec. 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  | 13,977,868 |  |  |  |  |
Balance at Dec. 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,398 | $ 85,599,140 | $ (75,134,316) |  |  | $ 10,466,222

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