Shareholders' Equity Equity Issuances (Details) (USD $)	9 Months Ended				0 Months Ended			0 Months Ended		2 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Nov. 19, 2010	Sep. 30, 2012 Private Placement [Member]	Sep. 30, 2011 Aspire Capital Purchase Agreement [Member]	Sep. 28, 2011 Aspire Capital Purchase Agreement [Member]	May 03, 2013 Aegis Capital Purchase Agreement [Member]	May 01, 2013 Aegis Capital Purchase Agreement [Member]	Feb. 28, 2013 Aspire Capital Purchase Agreement [Member]	Sep. 30, 2013 Aspire Capital Purchase Agreement [Member]
Class of Stock [Line Items]
Committment Value Under Purchase Agreement							$ 20,000,000
Term Of Agreement In Months							24
Discount Applied To Weighted Average Price							5.00%
Shares, Issued						99,010
Warrant Inducements (in shares)					161,290
Investment Warrants, Exercise Price					$ 6.00
Shares, Issued									2,000,000
Sale of Stock, Price Per Share				$ 0.945					$ 5
Proceeds from Issuance of Common Stock Gross								11,500,000
Common Stock, Shares, Issued	21,193,870		16,375,365						300,000	1,639,659
Net proceeds from issuance of common stock	21,517,422	12,160,227								11,100,000
Purchase Commitment, Remaining Minimum Amount Committed											$ 5,600,000