Financing (Details 3) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Debt Conversion [Line Items]
Debentures, Carrying Value	$ 0	$ 53
Preferred Stock [Member]
Debt Conversion [Line Items]
Preferred stock, Face Value	5,164	5,188
Preferred stock, Carrying Value	5,164	5,188
Preferred Stock, Accrued Interest		0
Preferred Stock, Embedded Conversion Feature	6,905	2,131
Common Stock Shares (in shares)	26,617,345	990,410
Series C Preferred Stock [Member]
Debt Conversion [Line Items]
Preferred stock, Face Value	4,816	4,840
Preferred stock, Carrying Value	4,816	4,840
Preferred Stock, Accrued Interest		0
Preferred Stock, Embedded Conversion Feature	6,440	1,988
Common Stock Shares (in shares)	24,823,015	923,953
Series D Preferred Stock [Member]
Debt Conversion [Line Items]
Preferred stock, Face Value	348	348
Preferred stock, Carrying Value	348	348
Preferred Stock, Accrued Interest		0
Preferred Stock, Embedded Conversion Feature	465	143
Common Stock Shares (in shares)	1,794,330	66,457
Debentures 2006 Series [Member]
Debt Conversion [Line Items]
Debentures, Face Value		53
Debentures, Carrying Value		53
Debentures, Accrued Interest		7
Debentures, Embedded Conversion Feature		$ 16
Debentures, Common Stock Shares (in shares)		11,871