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