Share-Based Payments (LP)

6 Months Ended

Jun. 30, 2011

Share-Based Payments [Abstract]

Disclosure Of Compensation Related Costs Share Based Payments Lp [Text Block]

9.      Share-Based Payments

During the six months ended June 30, 2011, the Company granted 146,581 stock options with an exercise price equal to the closing market price of a share of its Common Stock on the date of grant. The fair value of each option grant is estimated on the date of grant using the Black-Scholes option pricing model, which resulted in a weighted average grant date fair value per share of $6.47. During the six months ended June 30, 2011, the Company also granted 76,166 shares of time-based restricted stock and 57,386 shares of total return-based restricted stock with weighted average grant date fair values per share of $33.74 and $41.02, respectively. We recorded stock-based compensation expense of $1.4 million each during the three months ended June 30, 2011 and 2010, and $3.5 million each during the six months ended June 30, 2011 and 2010. At June 30, 2011, there was $7.9 million of total unrecognized stock-based compensation costs, which will be recognized over a weighted average remaining service period of 2.4 years.