Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2016
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,
 
2016
 
2015
 
2014
 
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
$
100,892

 
 
 
98,396

 
 
 
105,588

 
 
Dividends – Class A shares
(1,237
)
 
 
 
(1,237
)
 
 
 
(1,237
)
 
 
Dividends – Class B shares
(36
)
 
 
 
(36
)
 
 
 
(36
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Undistributed income
$
99,619

 
 
 
97,123

 
 
 
104,315

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Allocation of net income:
 

 
 
 
 

 
 
 
 

 
 
Dividends
$
1,237

 
36

 
1,237

 
36

 
1,237

 
36

Allocation of undistributed income
96,802

 
2,817

 
94,376

 
2,747

 
101,365

 
2,950

 
 
 
 
 
 
 
 
 
 
 
 
Net income
$
98,039

 
2,853

 
95,613

 
2,783

 
102,602

 
2,986

 
 
 
 
 
 
 
 
 
 
 
 
Denominator:
 

 
 

 
 

 
 

 
 

 
 

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

 
200

 
3,436

 
200

 
3,436

 
200

Effect of dilutive stock options
1

 
—

 
1

 
—

 
1

 
—

 
 
 
 
 
 
 
 
 
 
 
 
Diluted earnings per share - adjusted weighted-average shares for assumed conversions
3,437

 
200

 
3,437

 
200

 
3,437

 
200

 
 
 
 
 
 
 
 
 
 
 
 
Basic earnings per share
$
28.53

 
14.27

 
27.83

 
13.91

 
29.87

 
14.93

 
 
 
 
 
 
 
 
 
 
 
 
Diluted earnings per share
$
28.53

 
14.27

 
27.82

 
13.91

 
29.85

 
14.93