Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2013

Stock-Based Compensation [Abstract]

Summary of related activity under Incentive Plan

Related activity under the Incentive Plan is as follows:

	Awards Available			Options Outstanding			Weighted Average Exercise Price
Balance December 31, 2012		2,815			8,073		$	6.09
Restricted stock awards granted		(305	)		—			—
Restricted stock awards cancelled		29			—			—
Stock option awards granted		(2,003	)		2,003			1.43
Stock option awards exercised		—			(307	)		1.17
Stock option awards cancelled		1,088			(1,088	)		6.02
Balance June 30, 2013		1,624			8,681		$	5.20

Weighted Average Assumptions for Stock Option Awards Granted to Employees and Directors under the Incentive Plan

For stock option awards granted under the Incentive Plan during the first six months of 2013 and 2012, the fair value was estimated on the date of grant using a Black-Scholes option pricing model and the assumptions noted in the table below.

Weighted Average Assumptions for Stock Option Awards Granted to

Employees and Directors under the Incentive Plan

	2013			2012
Expected Life in Years		4.6			5.5
Expected Volatility		83	%		87	%
Expected Dividend Yield		0.0	%		0.0	%
Risk-Free Interest Rate		0.6	%		0.9	%