Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2013

Stockholders' Equity Note [Abstract]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

During the years ended December 31, 2013, 2012 and 2011, the Company granted stock options to employees and non-employee directors as follows:

	For the years ended December 31,
	2013		2012		2011
Options granted during period		985,500		2,136,000		1,190,500
Weighted average exercise price	$	1.10	$	3.26	$	6.91
Weighted average grant date fair value	$	0.77	$	2.21	$	4.60

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

The table below summarizes options outstanding, options vested and aggregate intrinsic value as of December 31, 2013:

Total options outstanding under the Plan		7,156,709
Weighted average remaining contractual life (in years)		5.76
Weighted average exercise price per share	$	3.52
Total options oustanding and vested		4,728,834
Total in-the-money options oustanding		4,452,709
Aggregate intrinsic value of in-the-money options outstanding	$	10,638,099
Total in-the-money options vested and outstanding		2,784,459
Aggregate intrinsic value of in-the-money options outstanding and vested	$	5,369,137

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

A summary of the Company’s stock option activity and related information since inception is as follows:

	Available	Activity/	Wtd Avg
	For Grant	Balance	Exercise Price
Establish 2002 Option Plan	1,085,648	-	$	0.00
Balance at December 31, 2002	1,085,648	-
2003 Activity	-	-	$	0.00
Balance at December 31, 2003	1,085,648	-
Cancel 2002 Stock Option Plan	(1,085,648)	-	$	0.00
Establish 2004 Stock Option Plan	1,085,648	-	$	0.00
2004 Option grants	(363,835)	363,835	$	0.56
Balance at December 31, 2004	721,813	363,835
2005 Plan Amendment	410,784	-
2005 Option grants	(761,451)	761,451	$	2.66
2005 Cancellations	58,683	(58,683)	$	2.62
2005 Exercises	-	(14,663)	$	0.07
Balance at December 31, 2005	429,829	1,051,940
2006 Plan Amendments	1,148,568	-
2006 Option grants	(668,085)	668,085	$	3.61
2006 Cancellations	8,802	(8,802)	$	2.62
2006 Exercises	-	(78,683)	$	0.06
Balance at December 31, 2006	919,114	1,632,540
2007 Plan Amendments	1,500,000	-
2007 Option grants	(665,500)	665,500	$	5.72
2007 Exercises	-	(17,868)	$	0.88
Balance at December 31, 2007	1,753,614	2,280,172
2008 Option grants	(837,500)	837,500	$	6.11
2008 Cancellations	148,802	(148,802)	$	4.95
2008 Exercises	-	(94,230)	$	0.63
Balance at December 31, 2008	1,064,916	2,874,640
2009 Plan Amendments	855,000	-
2009 Option grants	(938,290)	938,290	$	1.99
Balance at December 31, 2009	981,626	3,812,930
2010 Plan Amendments	1,200,000	-
2010 Option grants	(861,000)	861,000	$	3.10
2010 Cancellations	12,000	(12,000)	$	2.93
Balance at December 31, 2010	1,332,626	4,661,930
2011 Plan Amendments	1,200,000	-
2011 Option grants	(1,190,500)	1,190,500	$	6.91
2011 Cancellations	40,000	(40,000)	$	5.07
Balance at December 31, 2011	1,382,126	5,812,430
2012 Plan Amendments	3,000,000	-
2012 Option grants	(2,136,000)	2,136,000	$	3.26
2012 Exercises	-	(35,210)	$	0.20
2012 Cancellations	-	(837,150)	$	4.74
Balance at December 31, 2012	2,246,126	7,076,070
2013 Option grants	(985,500)	985,500	$	1.10
2013 Exercises	-	(81,875)	$	1.72
2013 Cancellations	-	(822,986)	$	4.71
Balance at December 31, 2013	1,260,626	7,156,709

Common Stock, Capital Shares Reserved for Future Issuance [Table Text Block]

Common stock reserved for future issuance consists of the following:

	December 31,
	2013	2012
Common stock warrants outstanding	-	2,023,530
Common stock options outstanding	7,156,709	7,076,070
Common stock options available for future grants	1,260,626	2,246,126
	8,417,335	11,345,726