Stock Transactions (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2011	Dec. 20, 2010	Nov. 29, 2010
Class of Stock [Line Items]
Common stock, authorized	475,000,000	475,000,000	475,000,000	130,000,000
Common stock, par value	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, liquidation value	$ 18
Convertible preferred stock, offering price, minimum	$ 45.00
Public Offering Criteria 1 [Member]
Class of Stock [Line Items]
Convertible preferred stock, issued	112.5
Convertible preferred stock, initial price offer	$ 0.40
Public Offering Criteria 2 [Member]
Class of Stock [Line Items]
Convertible preferred stock, issued	11.25
Convertible preferred stock, initial price offer	$ 4.00
Public Offering Criteria 3 [Member]
Class of Stock [Line Items]
Convertible preferred stock, issued	4.5
Convertible preferred stock, initial price offer	$ 10.00
Public Offering Criteria 4 [Member]
Class of Stock [Line Items]
Convertible preferred stock, issued	2.55
Convertible preferred stock, initial price offer	$ 17.60