Consolidated Statement Of Changes In Redeemable Convertible Preferred Stock And Stockholders' Equity (Deficit) (Parenthetical) (USD $)	12 Months Ended		162 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013
Issuance of stock, issuance costs	$ 111,000	$ 1,597,000	$ 17,000
Series B-1 12% redeemable convertible preferred stock | Issuance During Period 2nd
Issuance of stock, issuance costs			300,000
Series B-2 12% Redeemable Convertible Preferred Stock | Issuance During Period 3rd
Issuance of stock, issuance costs			188,000
Series C super dividend convertible preferred stock | Issuance During Period 4th
Issuance of stock, issuance costs			47,000
Cash | Issuance During Period 2nd
Issuance of stock, issuance costs			49,000
Cash | Issuance During Period 12th
Issuance of stock, Date			Feb. 25, 2008
Issuance of stock, issuance costs			369,000
Private Placement | Issuance During Period 3rd
Issuance of stock, issuance costs			212,000
Private Placement | Issuance During Period 5th
Issuance of stock, issuance costs			18,000
Private Placement | Issuance During Period 8th
Issuance of stock, issuance costs			128,000
Private Placement | Issuance During Period 9th
Issuance of stock, issuance costs			559,000
Private Placement | Issuance During Period 10th
Issuance of stock, issuance costs			466,000
Private Placement | Issuance During Period 11th
Issuance of stock, issuance costs			485,000
Private Placement | Series A 12% Convertible Preferred Stock | Issuance During Period 1st
Issuance of stock, Date			Feb. 04, 2008
Issuance of stock, issuance costs			$ 52,000