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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) | 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, 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) |  |  | 8,421 |  |  |  |  |
Issuance of common stock for directors’ fees |  |  | $ 1 | 16,512 |  |  |  | 16,513
Share-based compensation |  |  |  | 533,421 |  |  |  | 533,421
Net loss |  |  |  |  | (2,191,992) |  |  | (2,191,992)
Adoption of ASC 606 |  |  |  |  | 240,017 |  |  | 240,017
Dividends declared on preferred stock |  |  |  | (156,162) |  |  |  | (156,162)
Conversion of B-1 preferred stock to common stock (in shares) |  | (60,420) | 1,678,334 |  |  |  |  |
Conversion of B-1 preferred stock to common stock |  | $ (6) | $ 168 | (162) |  |  |  |
Conversion of dividends payable on B-1 preferred stock (in shares) |  |  | 115,857 |  |  |  |  |
Conversion of dividends payable on B-1 preferred stock |  |  | $ 11 | 417,072 |  |  |  | 417,083
Balance at Mar. 31, 2018 | $ 6 | $ 5 | $ 949 | 81,639,682 | (69,028,467) |  |  | 12,612,175
Balance (in shares) at Mar. 31, 2018 | 62,596 | 44,580 | 9,493,936 |  |  |  |  |
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
Net loss |  |  |  |  |  |  |  | (5,488,772)
Balance at Sep. 30, 2018 |  |  | $ 1,398 | 85,543,597 | (73,754,213) |  |  | 11,790,782
Balance (in shares) at Sep. 30, 2018 |  |  | 13,972,158 |  |  |  |  |
Balance (in shares) at Mar. 31, 2018 | 62,596 | 44,580 | 9,493,936 |  |  |  |  |
Balance at Mar. 31, 2018 | $ 6 | $ 5 | $ 949 | 81,639,682 | (69,028,467) |  |  | 12,612,175
Issuance of common stock for directors’ fees (in shares) |  |  | 2,683 |  |  |  |  |
Issuance of common stock for directors’ fees |  |  | $ 1 | 6,508 |  |  |  | 6,509
Share-based compensation |  |  |  | 143,034 |  |  |  | 143,034
Net loss |  |  |  |  | (1,655,465) |  |  | (1,655,465)
Dividends declared on preferred stock |  |  |  | (41,871) |  |  |  | (41,871)
Conversion of B-1 preferred stock to common stock (in shares) |  | (44,580) | 1,238,334 |  |  |  |  |
Conversion of B-1 preferred stock to common stock |  | $ (5) | $ 123 | (118) |  |  |  |
Conversion of dividends payable on B-1 preferred stock (in shares) |  |  | 15,373 |  |  |  |  |
Conversion of dividends payable on B-1 preferred stock |  |  | $ 2 | 55,339 |  |  |  | 55,341
Conversion of A-1 preferred stock to common stock (in shares) | (62,596) |  | 1,738,778 |  |  |  |  |
Conversion of A-1 preferred stock to common stock | $ (6) |  | $ 174 | (168) |  |  |  |
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
Legal fees |  |  |  | (15,212) |  |  |  | (15,212)
Rounding |  |  |  |  | 1 |  |  | 1
Balance at Jun. 30, 2018 |  |  | $ 1,259 | 82,143,199 | (70,683,931) |  |  | 11,460,527
Balance (in shares) at Jun. 30, 2018 |  |  | 12,587,997 |  |  |  |  |
Issuance of common stock for directors’ fees (in shares) |  |  | 4,161 |  |  |  |  |
Issuance of common stock for directors’ fees |  |  |  | 7,509 |  |  |  | 7,509
Share-based compensation |  |  |  | 188,837 |  |  |  | 188,837
Net loss |  |  |  |  | (1,641,315) |  |  | (1,641,315)
Legal fees |  |  |  | (294,776) |  |  |  | (294,776)
Rounding |  |  | 1 |  | (1) |  |  |
Balance at Sep. 30, 2018 |  |  | $ 1,398 | 85,543,597 | (73,754,213) |  |  | 11,790,782
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
Deemed dividend related to down-round features |  |  |  | 1,428,966 | (1,428,966) |  |  |
Balance (in shares) at Sep. 30, 2018 |  |  | 13,972,158 |  |  |  |  |
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
Issuance of common stock for directors’ fees (in shares) |  |  | 13,820 |  |  |  |  |
Issuance of common stock for directors’ fees |  |  | $ 1 | 16,505 |  |  |  | 16,506
Share-based compensation |  |  |  | 509,528 |  |  |  | 509,528
Net loss |  |  |  |  | (1,803,508) |  |  | (1,803,508)
Balance at Mar. 31, 2019 |  |  | $ 1,399 | 86,125,173 | (76,937,824) |  |  | 9,188,748
Balance (in shares) at Mar. 31, 2019 |  |  | 13,991,688 |  |  |  |  |
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
Net loss |  |  |  |  |  |  |  | (5,058,818)
Balance at Sep. 30, 2019 |  |  | $ 1,440 | 87,310,964 | (80,193,134) |  |  | 7,119,270
Balance (in shares) at Sep. 30, 2019 |  |  | 14,398,701 |  |  |  |  |
Balance (in shares) at Mar. 31, 2019 |  |  | 13,991,688 |  |  |  |  |
Balance at Mar. 31, 2019 |  |  | $ 1,399 | 86,125,173 | (76,937,824) |  |  | 9,188,748
Issuance of common stock for directors’ fees (in shares) |  |  | 4,235 |  |  |  |  |
Issuance of common stock for directors’ fees |  |  |  | 5,505 |  |  |  | 5,505
Share-based compensation |  |  |  | 125,549 |  |  |  | 125,549
Net loss |  |  |  |  | (1,425,743) |  |  | $ (1,425,743)
Issuance of common stock for commitment fees (in shares) |  |  | 300,000 |  |  |  |  | 310,000
Issuance of common stock for commitment fees |  |  | $ 30 | 449,970 |  |  |  | $ 450,000
Commitment fee adjustment |  |  |  | (270,000) |  |  |  | (270,000)
Balance at Jun. 30, 2019 |  |  | $ 1,429 | 86,436,197 | (78,363,567) |  |  | 8,074,059
Balance (in shares) at Jun. 30, 2019 |  |  | 14,295,923 |  |  |  |  |
Issuance of common stock for directors’ fees (in shares) |  |  | 6,111 |  |  |  |  |
Issuance of common stock for directors’ fees |  |  | $ 1 | 6,500 |  |  |  | 6,501
Share-based compensation |  |  |  | 130,600 |  |  |  | 130,600
Net loss |  |  |  |  | (1,829,567) |  |  | (1,829,567)
Issuance of common stock for commitment fees (in shares) |  |  | 276,667 |  |  |  |  |
Issuance of common stock for commitment fees |  |  | $ 28 | 414,972 |  |  |  | 415,000
Commitment fee adjustment |  |  | $ (18) | 18 |  |  |  |
Commitment fee adjustment (in shares) |  |  | (180,000) |  |  |  |  |
Warrant debt discount valuation |  |  |  | 595,662 |  |  |  | 595,662
Legal and commitment fees |  |  |  | (272,985) |  |  |  | (272,985)
Balance at Sep. 30, 2019 |  |  | $ 1,440 | $ 87,310,964 | $ (80,193,134) |  |  | $ 7,119,270
Balance (in shares) at Sep. 30, 2019 |  |  | 14,398,701 |  |  |  |  |

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