Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Stockholders' Equity [Abstract]

Gross proceeds from private placement

During 2011, the Company issued to accredited investors 35,500,000 shares of its common stock and five-year warrants to purchase an additional 17,750,000 shares of common stock at an exercise price of $0.26 per share in a private placement (the "2011 private placement") that resulted in gross proceeds of $7,100,000, which was recorded in the financial statements as follows:

Gross cash proceeds	$	7,100,000
Less:
Gross proceeds allocated to warrants liability - investors		(2,999,700	)
Gross proceeds allocated to additional paid-in capital and common stock		4,100,300
Cash issuance costs
Placement Agent fee and expenses		(766,500	)
Legal and accounting fees		(208,000	)
Non-cash issuance costs
Warrants liability – Placement Agent fees		(901,000	)
Recorded in additional paid-in capital and common stock	$	2,224,800

Summary of inactive plans

The following table summarizes options outstanding as of December 31, 2012 and 2011 that were granted from stock based compensation plans that are inactive. As of December 31, 2012 such plans can no longer grant options.

		Options Outstanding
	Year	Beginning of Year		Granted		Exercised			Cancelled			End of Year
2008 Stock Option Plan	2012		9,469,194		4,262,500		(390,447	)		(1,457,247	)		11,884,000
2005 Equity Incentive Plan	2012		1,705,000		350,000		(25,000	)		(582,500	)		1,447,500
1998 Stock Option/Stock Issuance Plan	2012		432,500		—		(200,000	)		(95,000	)		137,500
Supplemental Stock Option Agreement	2012		30,000		—		—			(25,000	)		5,000
			11,636,694		4,612,500		(615,447	)		(2,159,747	)		13,474,000
2008 Stock Option Plan	2011		1,855,333		8,128,500		(180,301	)		(334,338	)		9,469,194
2005 Equity Incentive Plan	2011		2,115,000		300,000		—			(710,000	)		1,705,000
1998 Stock Option/Stock Issuance Plan	2011		2,691,600		—		—			(2,259,100	)		432,500
Supplemental Stock Option Agreement	2011		381,000		—		—			(351,000	)		30,000
GG Stock Option Plan	2011		250,000		—		—			(250,000	)		—
1996 Stock Option Plan	2011		30,000		—		—			(30,000	)		—
			7,322,933		8,428,500		(180,301	)		(3,934,438	)		11,636,694

Summary of status of all stock option plans

A summary of the status of all of the options outstanding under all of the Company's stock option plans as of December 31, 2012 and 2011, and changes during the years then ended, is presented in the following table:

	2012					2011
	Shares			Weighted Average Exercise Price		Shares			Weighted Average Exercise Price
Beginning		11,636,694		$	0.18		7,322,933		$	0.27
Granted		5,312,500		$	0.22		8,428,500		$	0.20
Exercised		(615,447	)	$	0.08		(180,301	)	$	0.06
Forfeited or expired		(2,159,747	)	$	0.20		(3,934,438	)	$	0.39
Ending		14,174,000		$	0.20		11,636,694		$	0.18
Exercisable at year-end		14,174,000		$	0.20		11,636,694		$	0.18
Vested or expected to vest at year-end		13,901,838		$	0.20		11,455,294		$	0.18
Weighted average fair value of options granted during the period				$	0.22				$	0.11

Summary of information about stock options outstanding

The following table summarizes information about stock options outstanding as of December 31, 2012:

					Options Outstanding						Options Exercisable
Range of Exercise Price					Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$	0.05	—	$	0.17		3,737,000		7.37	$	0.11		3,737,000	$	0.11
$	0.18	—	$	0.20		4,419,500		6.27	$	0.20		4,419,500	$	0.20
$	0.21	—	$	0.23		4,167,500		7.30	$	0.23		4,167,500	$	0.23
$	0.25	—	$	0.38		1,850,000		9.01	$	0.31		1,850,000	$	0.31
						14,174,000		7.22	$	0.20		14,174,000	$	0.20

Unreleased restricted stock awards

A summary of the status of all of the Company's unreleased restricted stock awards as of December 31, 2012 and changes during the year then ended, is summarized in the following table. The Company did not issue any restricted stock awards during 2011, nor were any previously unreleased restricted stock awards outstanding at any time during 2011.

	2012
	Shares			Weighted Average Fair Value
Beginning unreleased		—		$	—
Awarded		4,157,500		$	0.18
Released		(114,377	)	$	0.18
Forfeited		—		$	—
Ending unreleased		4,043,123		$	0.18