Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Stock-Based Compensation [Abstract]

Summary of Share Based Compensation of Fair Value Assumptions

The fair value of each of the Company’s stock option awards is estimated on the date of grant using a Black-Scholes option-pricing model that uses the assumptions noted in the table below.

	Year ended December 31,  2012	Year ended December 31,  2011
Expected volatility	85.41% – 111.36%	76.91% – 102.63%
Expected dividend yield	0.00%	0.00%
Risk-free interest rate	1.02% – 1.98%	2.25% – 3.25%
Expected life	5.5 – 10.0 years	5.5 – 10.0 years
Forfeiture rate	0% – 2%	0% – 5%

Summary of Company's Stock Option activity

The following summarizes the Company’s stock option activity for the two years ended December 31, 2012:

	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding at December 31, 2010		1,334,667		$	1.41		5.74
Granted		562,500		$	1.12		9.20
Exercised		—			—
Canceled or expired		(269,000	)	$	1.19		4.88
Outstanding at December 31, 2011		1,628,167		$	1.35		6.26	$	—
Exercisable at December 31, 2011		864,917		$	1.50		4.98	$	—

	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Vested and expected to vest at December 31, 2011		1,585,098		$	1.35		6.23	$	—
Granted		813,500		$	0.66		9.13
Exercised		—			—
Canceled or expired		(362,667	)	$	1.61		5.29
Outstanding at December 31, 2012		2,079,000		$	1.03		6.77	$	—
Exercisable at December 31, 2012		982,625		$	1.26		5.13	$	—
Vested and expected to vest at December 31, 2012		2,037,742		$	1.03		6.73	$	—