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Stock-Based Compensation
 3 Months Ended
Mar. 31, 2013
Stock-Based Compensation [Abstract]  
Stock-Based Compensation

6. Stock-based Compensation

During the first quarter of 2013, the Company granted stock only stock appreciation rights (“SOSARs”) on 662 shares of its common stock to eligible employees, of which 191 include performance conditions. The grant date fair value of the SOSARs was $82.03 per share with an exercise price of $318.45 per share based on the closing price of common stock on the date of grant. The SOSARs (other than those subject to performance conditions) vest in two equal installments on the second and third anniversary of the grant date.

Total stock-based compensation expense was $15,655 ($9,534 net of tax) for the three months ended March 31, 2013, and was $20,760 ($12,659 net of tax) for the three months ended March 31, 2012. A portion of stock-based compensation totaling $268 and $520 for the three months ended March 31, 2013 and 2012, respectively, was recognized as capitalized development and is included in leasehold improvements, property and equipment in the consolidated balance sheet.  During the three months ended March 31, 2013,  54 options or SOSARs were exercised, and 22 options or SOSARs were forfeited.