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Stock Options (Details) - Employee Stock Option [Member]
 9 Months Ended
Sep. 30, 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 0
Number of Options, Exercised (in shares) | shares 0
Number of Options, Forfeited/Expired (in shares) | shares (251,711)
Number of Options, Outstanding at September 30, 2015 (in shares) | shares 3,390,146
Number of Options, Exercisable at September 30, 2015 (in shares) | shares 1,299,732
Number of Options, Vested and Expected to Vest at September 30, 2015 (in shares) | shares 1,299,732
Weighted - Average Exercise Price, Outstanding at January 1, 2015 (in dollars per share) $ 3.05
Weighted - Average Exercise Price, Granted (in dollars per shares) 0
Weighted - Average Exercise Price, Exercised (in dollars per share) 0
Weighted - Average Exercise Price, Forfeited/Expired (in dollars per share) 2.71
Weighted - Average Exercise Price, Outstanding at September 30, 2015 (in dollars per share) 3.08
Weighted - Average Exercise Price, Exercisable at September 30, 2015 (in dollars per share) 3.18
Weighted - Average Exercise Price, Vested and Expected to Vest at September 30, 2015 (in dollars per share) $ 3.18
Weighted - Average Remaining Contractual Term, Outstanding at September 30, 2015 (in years) 4 years 29 days
Weighted - Average Remaining Contractual Term, Exercisable at September 30, 2015 (in years) 2 years 7 months 28 days
Weighted - Average Remaining Contractual Term, Vested and Expected to Vest at September 30, 2015 (in years) 2 years 7 months 28 days
Aggregate Intrinsic Value, Outstanding at September 30, 2015 | $ $ 0
Aggregate Intrinsic Value, Exercisable at September 30, 2015 | $ 0
Aggregate Intrinsic Value, Vested and Expected to Vest at September 30, 2015 | $ $ 0