Share-Based Payment Arrangements (Details 2) - USD ($)
|
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |
|
|
| Number of Options Outstanding, Beginning |
4,855,941
|
|
| Number of Options, Granted |
870,000
|
|
| Number of Options, Exercised |
0
|
|
| Number of Options, Forfeited |
(1,714,120)
|
|
| Number of Options, Expired |
(520,331)
|
|
| Number of Options Outstanding, Ending |
3,491,490
|
4,855,941
|
| Number of Options, Exercisable |
2,671,990
|
|
| Number of Options, Expected to Vest after end of period |
573,650
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] |
|
|
| Weighted Average Exercise Price, Outstanding, Beginning (in dollars per share) |
$ 3.53
|
|
| Weighted Average Exercise Price, Granted (in dollars per share) |
1.27
|
|
| Weighted Average Exercise Price, Exercised (in dollars per share) |
0.00
|
|
| Weighted Average Exercise Price, Forfeited (in dollars per share) |
2.65
|
|
| Weighted Average Exercise Price, Expired (in dollars per share) |
5.05
|
|
| Weighted Average Exercise Price, Outstanding, Ending (in dollars per share) |
3.18
|
$ 3.53
|
| Weighted Average Exercise Price, Exercisable (in dollars per share) |
3.77
|
|
| Weighted Average Exercise Price, Expected to Vest After End of Period (in dollars per share) |
$ 1.25
|
|
| Weighted Average Remaining Contractual Life (in years), Outstanding |
4 years 10 months
|
4 years 9 months 5 days
|
| Weighted Average Remaining Contractual Life (in years), Exercisable |
3 years 5 months 20 days
|
|
| Weighted Average Remaining Contractual Life (in years), Expected to Vest after end of period |
9 years 3 months 15 days
|
|
| Aggregate Intrinsic Value, Outstanding |
$ 0
|
$ 632,581
|
| Aggregate Intrinsic Value, Exercisable |
0
|
|
| Aggregate Intrinsic Value, Expected to Vest |
$ 0
|
|