The Company, Basis of Presentation and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Organization, Consolidation and Presentation Of Financial Statements [Abstract]

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

The table below summarizes the assumptions utilized in estimating the fair value of the stock options granted during the years ended December 31, 2012, 2011 and 2010:

	For the years ended December 31,
	2012			2011			2010
Weighted-average risk-free interest rate		0.74	%		1.83	%		2.39	%
Weighted-average expected life of options		5 years			5 years			5 years
Expected dividend yield		0	%		0	%		0	%
Weighted-average expected volatility		89.73	%		87.82	%		93.95	%
Anticipated forfeiture rate		12	%		3	%		n/a

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

The table below summarizes the compensation expense recorded by the Company for the three and nine months ended September 30, 2012 and 2011 in conjunction with option grants made to employees and non-employee directors:

	For the year ended December 31,
	2012		2011		2010
Stock-based compensation expense recorded during period	$	1,828,203	$	2,648,741	$	1,986,755
Total unrecognized compensation expense remaining	$	4,173,830	$	5,724,738	$	3,031,546
Remaining average recognition period (in years)		2.81		1.95		1.97

Schedule of Expected Amortization Expense [Table Text Block]

The expected future amortization expense for unrecognized compensation expense for stock option grants to employees and non-employee directors at December 31, 2012 is as follows:

Year ending December 31, 2013	$	1,550,467
Year ending December 31, 2014		1,316,481
Year ending December 31, 2015		907,591
Year ending December 31, 2016		399,291
	$	4,173,830