Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Stockholders' Equity Note [Abstract]

Summary of Option Activity

Option activity for the years ended December 31, 2012 and 2011 was as follows:

	Shares Subject to Options			Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value  (in millions)
Outstanding, January 1, 2011		7,365,000		$	.67		2.1	$	-
Forfeited / Expired		(392,000	)		.89
Exercised		(1,362,000	)		.46
Granted		3,425,000			.74
Outstanding, December 31, 2011		9,036,000		$	.72		3.2	$	1.4
Forfeited / Expired		(1,630,000	)		1.08
Exercised		(425,000	)		.46
Granted		150,000			.88
Outstanding December 31, 2012		7,131,000		$	.65		3.1	$	2.0
Exercisable, December 31, 2012		3,402,000		$	.66		2.1	$	1.0

Additional Information Regarding Options Outstanding

Additional information regarding options outstanding as of December 31, 2012 is as follows:

		Options outstanding						Options exercisable
Range of exercise prices		Shares		Weighted average remaining contractual life (years)		Weighted average exercise price		Shares		Weighted average exercise price
$	.05 - .20		108,000		.4	$	.17		108,000	$	.17
	.24 - .65		2,739,000		2.5		.41		1,650,000		.39
	.67 - .88		3,750,000		4.0		.77		1,110,000		.86
	1.00 – 1.48		534,000		.1		1.16		534,000		1.16
$	.05 – 1.48		7,131,000		3.1	$	.65		3,402,000	$	.66

Summary of Weighted Average Grant-Date Fair Value of Options Granted

Weighted average grant-date fair value of options granted:

2012	$	.88
2011	$	.74

Weighted Average Assumptions Using Black-Scholes Option Pricing Model

The fair value of each option grant is estimated on the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions by grant year.

	2012			2011
Risk-free interest rate		.5	%		.5	%
Expected dividend yield		0	%		0	%
Expected volatility factor		15.90	%		15.10	%
Expected option term, in years		6.00			6.00