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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share
The following table sets forth the computations of basic and diluted earnings per share.
 
 
Years Ended December 31,
 
2012
 
2011
 
2010
 
Class A
 
Class B
 
Class A
 
Class B
 
Class A
 
Class B
 
(In thousands except per share amounts)
Numerator for Basic and Diluted Earnings Per Share:
 
 
 
 
 
 
 
 
 
 
 
Net income
$
92,558

 
 
 
55,627

 
 
 
72,897

 
 
Dividends – Class A shares
(1,237
)
 
 
 
(1,237
)
 
 
 
(1,234
)
 
 
Dividends – Class B shares
(36
)
 
 
 
(36
)
 
 
 
(36
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Undistributed income
$
91,285

 
 
 
54,354

 
 
 
71,627

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Allocation of net income:
 

 
 
 
 

 
 
 
 

 
 
Dividends
$
1,237

 
36

 
1,237

 
36

 
1,234

 
36

Allocation of undistributed income
88,703

 
2,582

 
52,816

 
1,538

 
69,598

 
2,029

 
 
 
 
 
 
 
 
 
 
 
 
Net income
$
89,940

 
2,618

 
54,053

 
1,574

 
70,832

 
2,065

 
 
 
 
 
 
 
 
 
 
 
 
Denominator:
 

 
 

 
 

 
 

 
 

 
 

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

 
200

 
3,433

 
200

 
3,427

 
200

Effect of dilutive stock options
—

 
—

 
4

 
—

 
10

 
—

 
 
 
 
 
 
 
 
 
 
 
 
Diluted earnings per share - adjusted weighted-average shares for assumed conversions
3,435

 
200

 
3,437

 
200

 
3,437

 
200

 
 
 
 
 
 
 
 
 
 
 
 
Basic earnings per share
$
26.19

 
13.09

 
15.74

 
7.87

 
20.67

 
10.33

 
 
 
 
 
 
 
 
 
 
 
 
Diluted earnings per share
$
26.19

 
13.09

 
15.73

 
7.87

 
20.61

 
10.33