7. Common Stock (Details 2) (Employee Stock Option [Member])	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Stock Option [Member]
Balance of employee stock options outstanding	3,000,500	1,100,500	630,250
Stock options granted	361,000	2,000,000	491,000
Stock options exercised	(60,000)	(50,000)	0
Stock options forfeited	(75,000)	(50,000)	(20,750)
Balance of employee stock options outstanding	3,226,500	3,000,500	1,100,500