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Earnings Per Share
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Earnings Per Share
EARNINGS PER SHARE

Basic earnings per share of common stock are computed by dividing net income by the weighted-average basic common shares outstanding during the period. Diluted earnings per share assumes the issuance of common shares applicable to stock options in the denominator.
 
Three Months Ended March 31,
 
2013
 
2012
 
Class A
 
Class B
 
Class A
 
Class B
 
(In thousands except per share amounts)
 
 
 
 
 
 
 
 
Numerator for Basic and Diluted Earnings Per Share:
 
 
 
 
 
 
 
Net income
$
16,632

 
 
 
19,741

 
 
Dividends - Class A shares
—

 
 
 
—

 
 
Dividends - Class B shares
—

 
 
 
—

 
 
 
 
 
 
 
 
 
 
Undistributed income
$
16,632

 
 
 
19,741

 
 
 
 
 
 
 
 
 
 
Allocation of net income:
 

 
 
 
 

 
 
Dividends
$
—

 
—

 
—

 
—

Allocation of undistributed income
16,162

 
470

 
19,183

 
558

 
 
 
 
 
 
 
 
Net income
$
16,162

 
470

 
19,183

 
558

 
 
 
 
 
 
 
 
Denominator:
 

 
 

 
 

 
 

Basic earnings per share - weighted-average shares
3,435

 
200

 
3,435

 
200

Effect of dilutive stock options
5

 
—

 
—

 
—

 
 
 
 
 
 
 
 
Diluted earnings per share - adjusted weighted-average shares for assumed conversions
3,440

 
200

 
3,435

 
200

 
 
 
 
 
 
 
 
Basic Earnings Per Share
$
4.71

 
2.35

 
5.58

 
2.79

 
 
 
 
 
 
 
 
Diluted Earnings Per Share
$
4.70

 
2.35

 
5.58

 
2.79