7. Common Stock (Details 2) (Employee Stock Option [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Stock Option [Member]
Balance of employee stock options outstanding	3,266,500	3,000,500	1,100,500
Stock options granted	273,000	401,000	2,000,000
Stock options exercised	68,500	(60,000)	(50,000)
Stock options forfeited	13,500	(75,000)	(50,000)
Balance of employee stock options outstanding	3,457,000	3,266,500	3,000,500