10. Net income per common share (Details 1) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015
Net Income Loss Per Common Share Details 1
Options to purchase shares of common stock	$ 480,000	$ 480,000
Warrants to purchase shares of common stock	6,300,000	6,300,000
Outstanding at September 30, 2015	$ 6,780,000	$ 6,780,000