Financing (Details 4) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Debt Conversion [Line Items]
Debentures Face Value	$ 53	$ 53
Debentures, Carrying Value	53	53
Debentures, Accrued Interest	9	7
Debentures, Embedded Conversion Feature	4,286	2,147
Debentures, Common Stock Shares (in shares)	13,479,826	1,002,281
Series C Preferred Stock [Member]
Debt Conversion [Line Items]
Preferred stock	4,816	4,840
Preferred stock, Carrying Value	4,816	4,840
Preferred Stock, Accrued Interest	0	0
Preferred Stock, Embedded Conversion Feature	3,967	1,988
Common Stock Shares (in shares)	12,411,508	923,953
Series D Preferred Stock [Member]
Debt Conversion [Line Items]
Preferred stock	348	348
Preferred stock, Carrying Value	348	348
Preferred Stock, Accrued Interest	0	0
Preferred Stock, Embedded Conversion Feature	287	143
Common Stock Shares (in shares)	897,165	66,457
Debentures 2006 Series [Member]
Debt Conversion [Line Items]
Debentures Face Value	53	53
Debentures, Carrying Value	53	53
Debentures, Accrued Interest	9	7
Debentures, Embedded Conversion Feature	$ 32	$ 16
Debentures, Common Stock Shares (in shares)	171,153	11,871