Stockholders' Equity (Details 9) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Class of Warrant or Right [Line Items]
Number of warrants issued	51,110	8,643
Warrants issued in connection with Notes	21,667	8,643
Warrants issued with purchase of Series D Preferred	18,989
Warrants issued in the Series D Preferred exchange	10,454
Related Party [Member]
Class of Warrant or Right [Line Items]
Number of warrants issued	31,972
Warrants issued in connection with Notes	19,584
Warrants issued with purchase of Series D Preferred	9,561
Warrants issued in the Series D Preferred exchange	2,827
Other Holders [Member]
Class of Warrant or Right [Line Items]
Number of warrants issued	19,138	8,643
Warrants issued in connection with Notes	2,083	8,643
Warrants issued with purchase of Series D Preferred	9,428
Warrants issued in the Series D Preferred exchange	7,627