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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share
 
Three Months Ended March 31,
 
2015
 
2014
 
Class A
 
Class B
 
Class A
 
Class B
 
(In thousands except per share amounts)
 
 
 
 
 
 
 
 
Numerator for Basic and Diluted Earnings Per Share:
 
 
 
 
 
 
 
Net income
$
21,326

 
 
 
19,826

 
 
Dividends - Class A shares
—

 
 
 
—

 
 
Dividends - Class B shares
—

 
 
 
—

 
 
 
 
 
 
 
 
 
 
Undistributed income
$
21,326

 
 
 
19,826

 
 
 
 
 
 
 
 
 
 
Allocation of net income:
 

 
 
 
 

 
 
Dividends
$
—

 
—

 
—

 
—

Allocation of undistributed income
20,723

 
603

 
19,265

 
561

 
 
 
 
 
 
 
 
Net income
$
20,723

 
603

 
19,265

 
561

 
 
 
 
 
 
 
 
Denominator:
 

 
 

 
 

 
 

Basic earnings per share - weighted-average shares
3,436

 
200

 
3,435

 
200

Effect of dilutive stock options
2

 
—

 
2

 
—

 
 
 
 
 
 
 
 
Diluted earnings per share - adjusted weighted-average shares for assumed conversions
3,438

 
200

 
3,437

 
200

 
 
 
 
 
 
 
 
Basic Earnings Per Share
$
6.03

 
3.02

 
5.61

 
2.80

 
 
 
 
 
 
 
 
Diluted Earnings Per Share
$
6.03

 
3.02

 
5.61

 
2.80



Stock options that were outstanding during the three months ended March 31, 2015 and 2014, but were not included in the computation of diluted earnings per share because the effect was anti-dilutive, were approximately 21,800 and 22,400, respectively.