7. Common Stock (Details) - $ / shares	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Common shares issuable	3,978,167	3,643,667	3,334,167	2,957,667
Employee Stock Option 1
Common shares issuable	46,500
Exercise price	$ 0.58
Employee Stock Option 2
Common shares issuable	155,000
Exercise price	$ 0.58
Employee Stock Option 3
Common shares issuable	1,400,000
Exercise price	$ 0.58
Employee Stock Option 4
Common shares issuable	31,000
Exercise price	$ .58
Employee Stock Option 5
Common shares issuable	123,667
Exercise price	$ 0.58
Employee Stock Option 6
Common shares issuable	207,500
Exercise price	$ 1.00
Employee Stock Option 7
Common shares issuable	232,500
Exercise price	$ 1.00
Employee Stock Option 8
Common shares issuable	287,500
Exercise price	$ 1.00
Employee Stock Option 9
Common shares issuable	280,000
Exercise price	$ 0.53
Employee Stock Option 10
Common shares issuable	35,000
Exercise price	$ 0.50
Employee Stock Option 11
Common shares issuable	372,500
Exercise price	$ 0.51
Employee Stock Option 12
Common shares issuable	332,500
Exercise price	$ 0.623
Employee Stock Option 13
Common shares issuable	474,500
Exercise price	$ 0.60