11. Net loss per common share (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Net Loss Per Common Share Details
Stock options	$ 480,000	$ 480,000
Warrants to purchase shares of common stock	19,637,409	6,300,000
Total	$ 20,117,409	$ 6,780,000