Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Stock-Based Compensation [Abstract]

Schedule of fair value of each option award granted

	For the Three Months	For the Three Months
	Ended March 31, 2013	Ended March 31, 2012
Expected life	6.5 years	6.5 years
Expected volatility	76.83%	79.68%
Risk-free interest rate	1.25-1.38%	1.40-1.51%
Dividend yield	0%	0%

Schedule of stock option plans

						Weighted
				Weighted		Average
				Average		Remaining
				Exercise		Contractual		Aggregate
	Number of			Price per		Term in		Intrinsic
	Shares			Share		Years		Value
Outstanding at December 31, 2012		2,426,533		$	4.01		7.0	$	29
Granted		58,850			1.68		—		—
Exercised		(18,059	)		1.00		—		—
Forfeited or expired		(1,032,010	)		3.80		—		—
Outstanding at March 31, 2013		1,435,314		$	4.11		7.9		0
Vested and exercisable at March 31, 2013		760,289		$	4.32		7.2	$	0

Schedule of stock options outstanding

			Options Outstanding
			Weighted-			Options Exercisable
			Average	Weighted				Weighted-
			Remaining	Average				Average
	Number		Contractual	Exercise		Number		Exercise
Range of Exercise Prices	Outstanding		Life	Price		Exercisable		Price
$  .01-$  3.00		229,351	9.5 years	$	2.20		67,151	$	2.30
$3.01-$  6.00		910,763	8.6 years	$	3.49		532,088	$	3.43
$6.01-$11.11		295,200	4.5 years	$	7.52		161,050	$	8.11
$  .01-$11.11		1,435,314	7.9 years	$	4.11		760,289	$	4.32