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Net Income Per Share (Tables)
 6 Months Ended
Jun. 30, 2016
Earnings Per Share [Abstract]  
Schedule Of Net Income Per Share
Net income per share was determined by dividing adjusted net income to shareholders by the applicable weighted average shares outstanding. Diluted net income per share is computed by dividing adjusted net income to shareholders by the weighted average number of common shares and dilutive potential common shares outstanding during the period.
 
Quarter Ended June 30,
 
Six Months Ended June 30,
(in thousands, except per share amounts)
2016
 
2015
 
2016
 
2015
Net income to shareholders
$
78,797

 
$
91,369

 
$
239,167

 
$
282,361

Adjustment of redeemable noncontrolling interests
(2,529
)
 
3,062

 
(5,981
)
 
1,715

Adjusted net income to shareholders
$
76,268

 
$
94,431

 
$
233,186

 
$
284,076

 
 
 
 
 
 
 
 
Basic common shares outstanding
14,012

 
13,975

 
14,003

 
13,973

Dilutive potential common shares from conversion of options
4

 
9

 
5

 
10

Dilutive potential common shares from conversion of restricted stock
72

 
68

 
79

 
74

Diluted shares outstanding
14,088

 
14,052

 
14,087

 
14,057

Basic net income per share
$
5.44

 
$
6.76

 
$
16.65

 
$
20.33

Diluted net income per share
$
5.41

 
$
6.72

 
$
16.55

 
$
20.21