Stock Purchase Warrants (Narrative) (Details) (USD $)	1 Months Ended				12 Months Ended
	Feb. 28, 2011	Dec. 31, 2010	Aug. 31, 2010	Oct. 31, 2009	Dec. 31, 2011	Dec. 31, 2010
Class of Warrant or Right, Grants in Period, Net of Forfeitures			2,000,000	4,250,000		2,000,000
Warrants Issued During Period, Underlying Shares			1
Class of Warrant or Right, Grants in Period, Exercise Price			$ 3.00	$ 3.00
Class of Warrant or Right, Grants in Period, Term			4 years
Class of Warrant or Right, Exercises in Period	4,041,421	25,000			4,041,421	25,000
Proceeds from Warrant Exercises	$ 12,124,263	$ 75,000			$ 12,124,263
Class of Warrant or Right, Expirations in Period					183,579	4,932,498