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Share-Based Compensation
3 Months Ended
Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-Based Compensation
Share-Based Compensation

During the first three months of 2014, we granted 290,500 stock appreciation rights (“SARs”), 53,680 restricted stock units, 62,670 performance shares, and 4,363 phantom stock units. For the three months ended March 31, 2014, total share-based compensation expense was $3.1 million and the related tax benefit was $1.2 million. For the three months ended March 31, 2013, total share-based compensation expense was $3.2 million and the related tax benefit was $1.2 million.
The estimated fair value of our 2014 SARs awards and related underlying assumptions are shown in the table below.
 
2014
Estimated fair value
$
18.90

Quarterly dividend rate
$
0.33

Expected term of stock appreciation rights, in years
4.4

Risk-free interest rate
1.3
%
Dividend yield
2.3
%
Expected stock price volatility
30.3
%
Present value of dividends
$
5.76