Basis of Presentation (Details Textual) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2013
Basis of Presentation [Line Items]
Accumulated deficit		$ (393,331,247)	$ (396,318,974)
Proceeds from Convertible Debt		10,000,000
Warrants Issued During The Period	2,247,912
Percentage Of Ownership Interest In Non Stock Subsidiary			100.00%
Stock Issued During Period, Shares, New Issues	4,495,828
Gross Proceeds From Issuance Of Shares And Warrants	$ 10,800,000