Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2013

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 Company has applied fair value accounting for all share based payment awards since inception. 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 three and six months ended June 30, 2013 and 2012 are as follows:

	Three Months Ended June 30,		Six Months Ended June 30,
	2013	2012	2013		2012
Exercise price	-	$1.70- $1.75		$1.74		$1.70- $2.47
Expected dividends	-	0%		0%		0%
Expected volatility	-	171%		148%		108% - 174%
Risk free interest rate	-	1.89% - 1.92%		0.77%		0.37% - 1.98%
Expected life of option	-	7 years – 10 years		5 years		7 years – 10 years
Expected forfeitures	-	0%		0%		0%

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

A summary of stock option activities as of June 30, 2013, and for the year ended December 31, 2012, is as follows:

					Weighted
					Average
			Weighted		Remaining		Aggregate
			Average Exercise		Contractual		Intrinsic
	Options		Price		Life		Value
Balance - December 31, 2011		2,979,010	$	1.34		6.01 years	$	-
Granted		2,075,000	$	2.21
Exercised		(374,851)	$	0.34
Forfeited		(225,413)	$	2.37
Balance - December 31, 2012		4,453,746	$	1.78		6.43 years	$	1,308,000
Granted		117,500	$	1.74
Exercised		(291,666)	$	0.79
Forfeited		(419,444)	$	2.31
Balance – June 30, 2013 - outstanding		3,860,136	$	1.79		6.00 years	$	976,000
Balance – June 30, 2013 - exercisable		2,779,133	$	1.66		4.34 years	$	915,000
Grant date fair value of options granted - 2013			$	185,000
Weighted average grant date fair value - 2013			$	1.57
Grant date fair value of options granted - 2012			$	4,468,000
Weighted average grant date fair value - 2012			$	2.15