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Note 7 - Stockholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2020
Notes Tables |
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] |
|  | June 30, 2020 |
Warrants outstanding January 1, 2020 |  |  | - |
Prefunded warrants issued May 2020 |  |  | 515,000 |
Exercises and conversions |  |  | - |
Warrants outstanding June 30, 2020 |  |  | 515,000 |
Base value of warrants, 515,000 warrants at $5 |  | $ | 2,575,000 |
Fair value adjustment |  |  | 236,900 |
Balance at June 30, 2020 |  | $ | 2,811,900 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  | June 30, 2020 |
|  | Number of units |  |  | Weighted Average Grant-Date Fair value |  |  | Aggregated Intrinsic Value |
Outstanding, December 31, 2019 |  |  | 133,747 |  |  | $ | 5.47 |  |  | $ | 50,824 |
Granted |  |  | 19,430 |  |  |  | 5.92 |  |  |  | - |
Vested and settled with share issuance |  |  | (16,545 | ) |  |  | 6.91 |  |  |  | - |
Forfeited |  |  | - |  |  |  | - |  |  |  | - |
Outstanding, June 30, 2020 |  |  | 136,632 |  |  | $ | 5.36 |  |  | $ | 13,663 |
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
|  |  |  | Options Outstanding |  |  | Options Exercisable |
Exercise Prices |  |  | Number Outstanding |  |  | Weighted Average Remaining Contractual Life (years) |  |  | Weighted Average Exercise Price |  |  | Number Exercisable |  |  | Weighted Average Exercise Price |
$ | 2.96 |  |  |  | 25,000 |  |  |  | 0.12 |  |  | $ | 2.96 |  |  |  | 25,000 |  |  | $ | 2.96 |
Total |  |  |  | 25,000 |  |  |  | 0.12 |  |  | $ | 2.96 |  |  |  | 25,000 |  |  | $ | 2.96 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] |
|  | June 30, 2020 |
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Average Remaining Life |  |  | Weighted Average Intrinsic Value |
Outstanding at beginning of period |  |  | 25,000 |  |  | $ | 2.96 |  |  |  | 0.62 |  |  | $ | 72,250 |
Granted |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Forfeited |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Expired |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Outstanding at end of period |  |  | 25,000 |  |  | $ | 2.96 |  |  |  | 0.12 |  |  | $ | 62,500 |
Vested and expected to vest |  |  | 25,000 |  |  | $ | 2.96 |  |  |  | 0.12 |  |  | $ | 62,500 |
Exercisable end of period |  |  | 25,000 |  |  | $ | 2.96 |  |  |  | 0.12 |  |  | $ | 62,500 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775 + Details
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- Definition Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding and exercisable options that are fully vested and expected to vest. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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