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Earnings Per Share
3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
We had 30,026 shares of nonvested restricted stock at March 31, 2015 and 20,100 shares of nonvested restricted stock at March 31, 2014 that were excluded from the calculation of diluted earnings per share, as their effect on earnings per share would be anti-dilutive.
The nonvested restricted stock is considered a participating security since the restricted stock contains nonforfeitable rights to dividends. As such, we use the two-class method to compute basic and diluted earnings per share for all periods presented since this method yielded a more dilutive result than the treasury-stock method. The following table illustrates the earnings allocation method utilized in the calculation of basic and diluted earnings per share.
 
 
Three Months Ended
March 31,
(in thousands, except per-share amounts)
 
2015
 
2014
Earnings per share numerator:
 
 
 
 
Net income attributable to common shareholders before allocation of earnings to participating securities
 
$
63,947

 
$
57,523

Earnings allocated to participating securities
 
142

 
90

Net income attributable to common shareholders after allocation of earnings to participating securities
 
$
63,805

 
$
57,433

Earnings per share denominator:
 
 
 
 
Weighted-average number of shares of common stock outstanding - basic and diluted
 
12,413

 
12,953

Earnings per share - basic and diluted
 
$
5.14

 
$
4.43