Shareholders' Equity Equity Issuances (Details) (USD $)	9 Months Ended				3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	May 08, 2014	Dec. 31, 2013	Mar. 31, 2014 Aspire Capital Purchase Agreement [Member]	Sep. 30, 2014 Aspire Capital Purchase Agreement [Member]	Sep. 28, 2011 Aspire Capital Purchase Agreement [Member]	Mar. 31, 2014 Aspire Capital Purchase Agreement [Member]	Sep. 30, 2014 Maximum [Member]	Sep. 30, 2014 Minimum [Member]	Oct. 06, 2014 Common Stock [Member] 2009 Equity Plan [Member] Stock Options [Member]
Class of Stock [Line Items]
Excess Stock, Shares Authorized											3,000,000
Common Stock, Shares Authorized	500,000,000			500,000,000							8,995,000
Committment Value Under Purchase Agreement					$ 20,000,000
Term Of Agreement In Months					24		24
Discount Applied To Weighted Average Price					5.00%
Proceeds from Issuance of Common Stock Gross					5,600,000
Common Stock, Shares, Issued	35,485,523		5,329,593	27,196,537				150,000
Purchase Commitment, Remaining Minimum Amount Committed								30,000,000
Stock Issued During Period, Shares, New Issues						900,000		800,000
Net proceeds from issuance of common stock	11,275,109	21,517,422				5,600,000
Stock Option Exercise	48,987
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit									$ 6.20	$ 5.20
Proceeds from Stock Options Exercised	$ 300,000