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Note 8 - Long-Term Incentive Plan (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
Exercise price |  | $ | 1.83 |
Expected volatility |  |  | 52.40 | %
Expected dividend yield |  |  | 0.00 | %
Risk-free rate over the estimated expected life |  |  | 1.74 | %
Expected term (in years) |  |  | 7.25 |
Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  |  |  |  |  | Weighted |  |  | Weighted |
|  | Number of |  |  | Average |  |  | Average |
|  | Options |  |  | Exercise |  |  | Fair Value at |
|  | Granted |  |  | Price |  |  | Grant Date |
Outstanding at January 1, 2016 |  |  | 760,000 |  |  | $ | 2.63 |  |  | $ | 1.09 |
Options granted |  |  | 90,000 |  |  |  | 1.83 |  |  |  | 0.43 |
Options exercised |  |  | - |  |  |  | - |  |  |  | - |
Options cancelled or forfeited |  |  | (90,000 | ) |  |  | 2.89 |  |  |  | 1.20 |
Outstanding at December 31, 2016 |  |  | 760,000 |  |  |  | 2.51 |  |  |  | 1.00 |
Options granted |  |  | - |  |  |  | - |  |  |  | - |
Options exercised |  |  | - |  |  |  | - |  |  |  | - |
Options cancelled or forfeited |  |  | - |  |  |  | - |  |  |  | - |
Outstanding at December 31, 2017 |  |  | 760,000 |  |  | $ | 2.51 |  |  | $ | 1.00 |
Options Vested |  |  | 688,000 |  |  |  |  |  |  |  |  |
Exercisable at December 31, 2017 |  |  | 268,000 |  |  |  |  |  |  |  |  |
Schedule Of Period And Predetermined Stock Price Needed For Vesting [Table Text Block] |
| Begins |  | Ends |  | Predetermined |
| Vesting |  | Vesting |  | Vesting Price |
Block 1 | 12 months after Grant Dates |  | 48 months after Grant Dates |  | $ | 3.43 |
Block 2 | 24 months after Grant Dates |  | 60 months after Grant Dates |  | $ | 4.69 |
Block 3 | 36 months after Grant Dates |  | 72 months after Grant Dates |  | $ | 6.43 |
Block 4 | 48 months after Grant Dates |  | 84 months after Grant Dates |  | $ | 8.81 |
Block 5 | 60 months after Grant Dates |  | 96 months after Grant Dates |  | $ | 12.07 |

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