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Note 8 - Stock Options and Warrants | 6 Months Ended
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Jun. 30, 2019
Equity [Abstract] |
Stock Options and Warrants | Stock Options The following table summarizes stock option transactions for the six months ended June 30, 2019:
|  | Number of Options |  |  | Weighted Average Exercise Price |
Outstanding, December 31, 2018 |  |  | 1,133 |  |  | $ | 1,320.00 |
Granted |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |
Expired |  |  | (1,133 | ) |  |  | 1,320.00 |
Outstanding, June 30, 2019 |  |  | - |  |  | $ | - |
Exercisable, June 30, 2019 |  |  | - |  |  | $ | - |
Common Stock Warrants Warrant transactions for the six months ended June 30, 2019 are as follows:
|  | Number of Warrants |  |  | Weighted Average Exercise Price |
Outstanding at December 31, 2018: |  |  | 1,813,053 |  |  | $ | 0.35 |
Granted |  |  | - |  |  |  | - |
Forfeited |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |
Outstanding at June 30, 2019 |  |  | 1,813,053 |  |  | $ | 0.35 |
Exercisable at June 30, 2019 |  |  | 1,813,053 |  |  | $ | 0.35 |

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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