3. Stock-Based Compensation (Details 2) - USD ($)	9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Stock-based Compensation Details 2
Options outstanding	1,313,000	1,330,000	1,240,000	1,193,000	1,268,000	1,278,000	1,283,000	1,264,000
Weighted Average Price per share	$ .22	$ .22	$ .24	$ .24	$ .25	$ .25	$ .26	$ .26
Weighted average remaing contractual life in years	5 years 5 months 12 days
Aggregate intrinsic value	$ 3,305
Options exercisable	1,193,500
Options exercisable weighted average exercise price	$ .23
Options exercisable weighted average remaining contractual life	5 years 25 days
Options exercisable aggregate intrinsic value	$ 2,455