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Stock-Based Compensation (Details 1) (Stock Options [Member], USD $)
6 Months Ended
Jun. 30, 2014
Stock Options [Member]
 
Summary of all stock option plans / warrant activity  
Number of Options/Warrants Outstanding, Beginning Balance 1,600,583
Warrants, Granted 335,000
Number of Options/Warrants Outstanding, Expired (600)
Number of Options/Warrants Outstanding, Ending Balance 1,935,583
Weighted Average Exercise Price, Outstanding, Beginning Balance $ 5.22
Weighted Average Exercise Price, Granted $ 7.09
Weighted Average Exercise Price, Expired $ 58.25
Weighted Average Exercise Price, Outstanding, Ending Balance $ 5.54