Stock-Based Compensation (Details Textual) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended		9 Months Ended				12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012 Employees and Consultants [Member]	Sep. 30, 2011 Employees and Consultants [Member]	Sep. 30, 2012 2001 Stock Plan [Member]	Oct. 31, 2006 2001 Stock Plan [Member]	Dec. 31, 2006 2001 Stock Plan [Member] Stock Options and Stock Appreciation Rights Sars [Member]	Sep. 30, 2012 2007 Stock Plan [Member]	Mar. 20, 2007 2007 Stock Plan [Member]	Sep. 30, 2012 2010 Stock Plan [Member]	Nov. 02, 2010 2010 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	4,258,746		4,258,746		2,979,010	2,539,091			1,066,007	1,489,353		912,739	2,500,000	2,280,000	3,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross							1,840,000	377,002			250,000
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Fair Value							$ 4,000,000	$ 475,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 2.20	$ 1.26
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			334,851	10,000	23,333
Allocated Share-based Compensation Expense	395,000	60,000	1,300,000	894,000
Expected Unrecognised Share-based Compensation Cost	$ 3,300,000		$ 3,300,000