Stock Options (Tables)

12 Months Ended

Dec. 31, 2015

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

Summary of Stock Options Activity

	2015					2014
	Options			Weighted Average Exercise Price		Options			Weighted Average Exercise Price
Outstanding, beginning of year		3,560,065			0.24		4,194,972			0.25
Granted		787,500			0.16		60,000			0.26
Exercised		—			—		(161,664	)		0.15
Cancelled		—			—		(45,418	)		0.15
Expired		(489,565	)		0.34		(487,825	)		0.32
Outstanding, end of year		3,858,000			0.22		3,560,065			0.24
Exercisable, end of year		2,851,333			0.23		2,885,051			0.19
Options available for future grant, end of year		537,008					834,943			0.16

Schedule of Unvested Options Activity

	2015				2014
	Options		Weighted Average Exercise Price		Options			Weighted Average Exercise Price
Non-Vested options at beginning of year		675,014		0.16		1,311,674			0.18
Granted		787,500		0.16		60,000			0.26
Vested		(455,847)		0.16		(691,242	)		0.18
Cancelled		—		—		(5,418	)		0.15
Non-Vested options end of year		1,006,667		0.17		675,014			0.16

Summary of Options Outstanding by Price Range

	Options Outstanding						Options Exercisable
Range of Exercise Price	Number Outstanding		Remaining Average Contractual Life (In Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
0.11-.94		3,858,000		5.33		.022		2,851,333		0.23

Schedule of Fair Value Assumptions

	December 31,
	2015		2014
Risk-free interest rate	0.93%-1.39	%	0.88%-1.63	%
Expected term (life) of options (in years)	5-10		4.65-9.40
Expected dividends			—
Expected volatility	164.47%-169.10%		173.78%-176.67	%