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v3.19.1

Stockholders' Equity and Stock-Based Compensation (Details 3) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Beginning of the period | 3,976,884 |
End of the year | 5,604,154 | 3,976,884
Weighted Average Exercise Price Beginning of the period | $ 3.58 |
Weighted Average Exercise End of the yea | 2.72 | $ 3.58
Weighted Average Exercise Price Options exercisable | $ 3.50 | $ 4.84
Performance-based stock options [Member] |  |
Beginning of the period | 3,976,884 | 2,172,581
Granted | 1,784,455 | 1,854,277
Exercised |  |
Forfeited | (143,980) |
Expired | (13,205) | (49,974)
End of the year | 5,604,154 | 3,976,884
Options exercisable | 3,935,138 | 2,434,148
Weighted Average Exercise Price Beginning of the period | $ 3.58 | $ 6.70
Weighted Average Exercise Price Stock Options Granted | 0.90 | 1.05
Weighted Average Exercise Price Stock Options Exercised |  |
Weighted Average Exercise Price Stock Options Forfeited | 1.10 |
Weighted Average Exercise Price Stock Options Expired | 30.60 | 45.53
Weighted Average Exercise End of the yea | 2.72 | 3.58
Weighted Average Exercise Price Options exercisable | 3.50 | 4.84
Weighted Average Fair Value Stock Options Beginning of the period | 2.49 | 4.83
Weighted Average Fair Value Stock Options Granted | 0.70 | 0.77
Weighted Average Fair Value Stock Options Exercised |  |
Weighted Average Fair Value Stock Options Forfeited | 0.83 |
Weighted Average Fair Value Stock Options Expired | 21.13 | 38.70
Weighted Average Fair Value Stock Options End of the yea | 1.96 | 2.49
Weighted Average Fair Value Options exercisable | $ 2.49 | $ 3.36

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