Stock Awards (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2013

Dec. 31, 2012

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

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

			Stock Options				Restricted Stock
					Weighted				Weighted
	Shares		Number of		Average		Number of		Average
	Available		Options		Exercise		Options		Grant-Date
	For Grant		Outstanding		Price		Outstanding		Fair Value
Balance at January 1, 2011	2,191,821		5,543,893		$	1.5218	127,500		$	1.6422
2008 Plan Amendment	8,000,000		-		$	-	-		$	-
Granted	(1,504,635	)	1,153,550		$	0.6427	351,085		$	0.8497
Exercised	-		(324,740	)	$	0.3220	-		$	-
Vested	-		-		$	-	(362,944	)	$	0.8909
Forfeited	1,247,521		(1,140,021	)	$	1.2928	(110,000	)	$	1.6050
Canceled	370,364		(925,782	)	$	1.7061	(641	)	$	2.3900
Balance at December 31, 2011	10,305,071		4,306,900		$	1.3978	5,000		$	1.2500
Granted	(9,785,500	)	9,724,000		$	0.1164	61,500		$	0.1385
Vested	-		-		$	-	(59,000	)	$	0.2325
Forfeited	1,471,073		(1,471,073	)	$	0.5925	-		$	-
Canceled	937,342		(1,135,329	)	$	1.3123	-		$	-
Balance at December 31, 2012	2,927,986		11,424,498		$	0.4193	7,500		$	0.1400

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

		Weighted
		Average	Weighted
		Remaining	Average		Aggregate
	Number of	Contractual	Exercise		Intrinsic
Options	Shares	Life (in Years)	Price		Value
Outstanding	11,424,498	5.71	$	0.4193	$	2,898
Vested and expected to vest	10,262,319	5.66	$	0.4502	$	2,898
Exercisable	4,123,060	4.82	$	0.8747	$	2,898

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Six Months Ended June 30,
	2013	2012
Risk-free interest rate	0.71%	0.71% - 1.09%
Expected term	4.75 Years	4.75 Years
Expected volatility	108.14%	65.02% - 98.80%
Dividend yield	0%	0%

	Year Ended December 31,
	2012		2011
Risk-free interest rate	0.71% - 1.14%	0	0.79% - 2.24%
Expected term	4.75 Years		4.75 Years
Expected volatility	65.02% - 103.61%		42.44% - 66.83%
Dividend yield	0%		0%

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

			Stock Options						Restricted Stock
							Weighted						Weighted
	Shares			Number of			Average			Number of			Average
	Available			Options			Exercise			Shares			Grant Date
	For Grant			Outstanding			Price			Outstanding			Fair Value
Balance at January 1, 2013		2,927,986			11,424,498		$	0.4193			7,500		$	0.1400
Granted		(1,225,000	)		1,225,000		$	0.0560			—		$	—
Vested		––			––		$	––			(7,500	)	$	0.1400
Forfeited		457,917			(457,917	)	$	0.0979			––		$	––
Canceled		177,083			(456,542	)	$	1.1782			––		$	––
Balance at June 30, 2013		2,337,986			11,735,039		$	0.3644			—		$	—