Stock Options and Stock Grants (Tables)

12 Months Ended

Dec. 31, 2015

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

Schedule of Assumptions Used to Calculate Black-Scholes Option Pricing Model for Stock Options Granted

The following table illustrates the various assumptions used to calculate the Black-Scholes option pricing model for options granted for all years presented:

	Years Ended December 31,
	2015			2014
Weighted-average risk-free interest rates:		1.7	%		2.0	%
Dividend yield:		0.00	%		0.00	%
Weighted-average expected life of the option:		7 years			7 years
Weighted-average expected stock price volatility:		95	%		95	%
Weighted-average fair value of the options granted:	$	0.36		$	0.42

Summary of Option Activity

The following table summarizes the option activity for our employees and directors during the year ended December 31, 2015:

	(rounded)			Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Term (years)
								Aggregate Intrinsic Value
Options	Shares
Outstanding on January 1, 2015		2,440,000		$	1.15
Granted		461,000		$	0.44
Exercised		(69,000	)	$	0.37
Forfeited or expired		(258,000	)	$	2.20
Outstanding on December 31, 2015		2,574,000		$	0.95		5.5	$	41
Exercisable on December 31, 2015		1,656,000		$	1.21		5.5	$	41
Shares available for grant		445,000