Loss Per Share (Details)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Stock Options [Member]
Class of Stock [Line Items]
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares	22,389,642	17,749,895
Warrants [Member]
Class of Stock [Line Items]
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares	56,314,182	35,208,817
Series E Preferred Stock [Member]
Class of Stock [Line Items]
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares	2,634,799	4,693,730
Restricted Stock [Member]
Class of Stock [Line Items]
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares	232,000	830,834