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Stock Options (Details 1) - Employee Stock Option [Member]
 12 Months Ended
Dec. 31, 2015
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Options, Outstanding at January 1, 2015 (in shares) | shares 3,641,857
Number of Options, Granted (in shares) | shares 785,000
Number of Options, Exercised (in shares) | shares 0
Number of Options, Forfeited/Expired (in shares) | shares (456,711)
Number of Options, Outstanding at December 31, 2015 (in shares) | shares 3,970,146
Number of Options, Exercisable at December 31, 2015 (in shares) | shares 1,420,482
Number of Options, Vested and Expected to Vest at December 31, 2015 (in shares) | shares 3,970,146
Weighted - Average Exercise Price, Outstanding at January 1, 2015 (in dollars per share) | $ / shares $ 3.05
Weighted - Average Exercise Price, Granted (in dollars per shares) | $ / shares 2.85
Weighted - Average Exercise Price, Exercised (in dollars per share) | $ / shares 0
Weighted - Average Exercise Price, Forfeited/Expired (in dollars per share) | $ / shares 2.97
Weighted - Average Exercise Price, Outstanding at December 31, 2015 (in dollars per share) | $ / shares 3.02
Weighted - Average Exercise Price, Exercisable at December 31, 2015 (in dollars per share) | $ / shares 3.07
Weighted - Average Exercise Price, Vested and Expected to Vest at December 31, 2015 (in dollars per share) | $ / shares $ 3.02
Weighted - Average Remaining Contractual Term, Outstanding at December 31, 2015 (in years) 5 years 3 months 22 days
Weighted - Average Remaining Contractual Term, Exercisable at December 31, 2015 (in years) 4 years 11 days
Weighted - Average Remaining Contractual Term, Vested and Expected to Vest at December 31, 2015 (in years) 5 years 3 months 22 days
Aggregate Intrinsic Value, Outstanding at December 31, 2015 | $ $ 322,925
Aggregate Intrinsic Value, Exercisable at December 31, 2015 | $ 215,225
Aggregate Intrinsic Value, Vested and Expected to Vest at December 31, 2015 | $ $ 322,925