Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

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

Share-based Compensation Arrangement by Share-based Payment Award Options and Warrants Vested and Expected to Vest Outstanding and Exercisable [Table Text Block]

The fair value of each option or warrant granted is estimated on the date of grant using the Black-Scholes option-pricing model. The Black-Scholes assumptions used in the months ended September 30, 2012 and 2011 are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Exercise price		$1.96 – $2.27		$0.64 – $0.87		$1.70 – $2.47		$0.64 – $2.22
Expected dividends		0%		0%		0%		0%
Expected volatility		153%		177% – 180%		108% – 174%		177% – 188%
Risk free interest rates		0.63% – 0.65%		1.40% – 2.17%		0.37% – 1.98%		1.40% – 3.58%
Expected life options		5 years – 10 years		7 years		5 years – 10 years		5 years – 7 years
Expected forfeitures		0%		0%		0%		0%

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of stock option activities as of September 30, 2012, and for the year ended December 31, 2011, is as follows:

	Number of Options Outstanding			Weighted Average  Exercise Price per Share		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
Balance – December 31, 2010		2,539,091		$	1.32
Granted		557,002			1.26
Exercised		(23,333	)		0.57			$	20,000
Forfeited or expired		(93,750	)		0.59
Balance – December 31, 2011		2,979,010			1.34
Granted		1,840,000			2.24
Exercised		(334,851	)		0.28			$	625,000
Forfeited or expired		(225,413	)		2.37
Balance – September 30, 2012 – outstanding		4,258,746		$	1.76		6.77 years	$	1,980,000
Balance – September 30, 2012 – exercisable		2,620,784		$	1.56		5.85 years	$	1,660,000