10. Stockholders' deficit - Options Outstanding (Details) - Options - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Beginning balance, options	480,000	480,000
Beginning balance, options exercise price	$ 0.12	$ 0.12
Options Exercisable, shares		280,000
Options Exercisable, price		$ 0.12
Ending Balance, options	480,000	480,000
Ending Balance, options exercise price	$ 0.12	$ 0.12