Stock-Based Compensation

6 Months Ended

Jun. 30, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

10. Stock-Based Compensation

Our Board of Directors granted 0.6 million stock options, 0.5 million performance share units and 0.3 million deferred stock units during the first half of 2013 under our 2010 Long Term Incentive Plan. The following table details the weighted-average grant-date fair values and the assumptions used for estimating the fair values of stock option grants made during the six months ended June 30, 2013:


	Stock Options
Weighted-average grant-date fair value	$	4.01
Expected life, in years		6.0
Risk-free interest rate		1.2% - 1.4%
Expected volatility		83.9% - 86.4%

The weighted average grant date fair value of our performance share units was $5.70. These shares are currently expensed at target and are evaluated each reporting period for likelihood of achieving the performance criteria.

We measure the fair value of deferred stock units based on the closing market price of our common stock on the date of the grant. The weighted-average fair value per unit for grants made during the six months ended June 30, 2013, was $5.52.

We recognized stock-based compensation expense of $2.6 million for the six months ended June 30, 2013, and $3.8 million for the six months ended June 30, 2012. At June 30, 2013, unearned compensation cost related to the unvested portion of all stock-based awards was approximately $8.9 million and is expected to be recognized over the remaining vesting period of the respective grants, through the first quarter of 2016.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References+ Details