8. Stock Option Plans and Agreements (Tables)

3 Months Ended

Mar. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

	2017	2016
Risk-free interest rate	1.50%	1.07%
Expected dividend yield	0%	0%
Expected stock price volatility	100%	100%
Expected life of options	2.75 years	2.50 years

Schedule of Share-based Compensation, Stock Options, Activity

	Number of Options Outstanding			Weighted Average Exercise Price	Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at December 31, 2016	8,583,000		$	0.12
Granted	150,000		$	0.045
Expired	(22,500	)	$	0.26
Forfeited	(12,500	)	$	0.04
Outstanding at March 31, 2017	8,698,000		$	0.12	4.0 years	2,700
At March 31, 2017:
Vested or expected to vest	6,310,000		$	0.09	5.1 years	2,700
Exercisable	6,110,000		$	0.09	5.1 years	2,700