Share-Based Payment Arrangements (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of Options Outstanding, Beginning	11,360,842
Number of Options, Granted	2,034,500
Number of Options, Exercised	(310,000)
Number of Options, Forfeited	(5,178,050)
Number of Options, Expired	(362,860)
Number of Options Outstanding, Ending	7,544,432	11,360,842
Number of Options, Exercisable	4,836,007
Number of Options, Expected to Vest after end of period	1,895,898
Weighted Average Exercise Price, Outstanding, Beginning	$ 4.66
Weighted Average Exercise Price, Granted	$ 1.43
Weighted Average Exercise Price, Exercised	$ 2.25
Weighted Average Exercise Price, Forfeited	$ 4.13
Weighted Average Exercise Price, Expired	$ 6.69
Weighted Average Exercise Price, Outstanding, Ending	$ 4.16	$ 4.66
Weighted Average Exercise Price, Exercisable	$ 5.41
Weighted Average Exercise Price, Expected to Vest After End of Period	$ 1.93
Weighted Average Remaining Contractual Life (in years), Outstanding	4 years 10 months 13 days	6 years 5 months 16 days
Weighted Average Remaining Contractual Life (in years), Exercisable	6 years 3 months 11 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 3,000
Weighted Average Remaining Contractual Life (in years), Expected to Vest after end of period	8 years 9 months 18 days
Aggregate Intrinsic Value Outstanding, Ending		497,695
Aggregate Intrinsic Value, Exercisable	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expected to Vest, Outstanding, Aggregate Intrinsic Value	$ 2,100