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Loss Per Share (Tables) | 3 Months Ended
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Mar. 31, 2015
Loss Per Share [Abstract] |
ScheduleOfDilutiveSecuritiesExcludedFromComputationOfEarningsPerShare [Table Text Block] | At March 31, 2015 and 2014, the Company excluded the following potentially dilutive securities:
| March 31,
| 2015 |  | 2014
Stock Options | 6,371,533 |  |  | 3,912,697 |
Warrants | 3,545,756 |  |  | 4,491,028 |
Restricted Shares | 218,229 |  |  | 175,731 |

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