Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value of the stock options granted during the six month period ended June 30, 2011 was estimated on the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions:



Expected life (years)	5.4
Expected volatility	92.2	%
Expected dividend yield	—
Risk-free interest rate	2.0	%
Weighted average fair value of options
granted during the period	$0.54

Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes stock option activity for the six month period ended June 30, 2012:



	Number of Shares		Weighted Average Exercise Price Per Share	Weighted Average remaining Contractual Life (years)	Aggregate Intrinsic Value (in thousands)
Outstanding balance at December 31, 2011	5,988,500		$1.68
Granted	—		—
Exercised	—		—
Expired	(500,950	)	1.75
Forfeited	(326,250	)	0.90
Outstanding balance at June 30, 2012	5,161,300		$1.73	6.2	$94
Options exercisable at June 30, 2012	2,310,050		$2.86	4.2	$26