Financing (Details 3) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Debt Conversion [Line Items]
Preferred Stock, Face Value	$ 4,945	$ 5,164
Preferred Stock, Carrying Value	4,945	5,164
Preferred Stock, Embedded Conversion Feature	51	296
Preferred Stock, Common Stock Shares (in shares)	3,921,570	26,617,345
Series C Convertible Preferred Stock [Member]
Debt Conversion [Line Items]
Preferred Stock, Face Value	4,597	4,816
Preferred Stock, Carrying Value	4,597	4,816
Preferred Stock, Embedded Conversion Feature	48	276
Preferred Stock, Common Stock Shares (in shares)	3,159,450	24,823,015
Series D Convertible Preferred Stock [Member]
Debt Conversion [Line Items]
Preferred Stock, Face Value	348	348
Preferred Stock, Carrying Value	348	348
Preferred Stock, Embedded Conversion Feature	$ 3	$ 20
Preferred Stock, Common Stock Shares (in shares)	239,244	1,794,330