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Note R - Earnings Per Share (EPS) (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | 201 8 |  |  | 201 7 |
Basic Numerator: |  |  |  |  |  |  |  |
Loss from continuing operations |  | $ | (6,868,875 | ) |  | $ | (4,275,338 | )
Deemed dividend from trigger of anti-dilution provision feature |  |  | (1,428,966 | ) |  |  | - |
Convertible preferred stock dividends |  |  | (198,033 | ) |  |  | (769,158 | )
Net loss available to common stockholders (basic and diluted EPS) |  | $ | (8,495,874 | ) |  | $ | (5,044,496 | )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | Years ended December 31, |
|  | 201 8 |  |  | 201 7 |
Preferred stock |  |  | 1,426,756 |  |  |  | 5,264,422 |
Stock options |  |  | 83 |  |  |  | 15,529 |
Warrants |  |  | 697,879 |  |  |  | 2,109 |
Potentially dilutive securities |  |  | 2,124,718 |  |  |  | 5,282,060 |
|  | Years ended December 31, |
|  | 201 8 |  |  | 201 7 |
Stock options |  |  | 1,583,014 |  |  |  | 1,390,428 |
Warrants |  |  | 186,806 |  |  |  | 1,351,052 |
Total |  |  | 1,769,820 |  |  |  | 2,741,480 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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