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Net Income Per Share (Tables)
 6 Months Ended
Jun. 30, 2017
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)
2017
 
2016
 
2017
 
2016
Net income to shareholders
$
149,660

 
$
78,797

 
$
219,529

 
$
239,167

Adjustment of redeemable noncontrolling interests
(5,141
)
 
(2,529
)
 
(20,284
)
 
(5,981
)
Adjusted net income to shareholders
$
144,519

 
$
76,268

 
$
199,245

 
$
233,186

 
 
 
 
 
 
 
 
Basic common shares outstanding
13,977

 
14,012

 
13,987

 
14,003

Dilutive potential common shares from conversion of options
2

 
4

 
2

 
5

Dilutive potential common shares from conversion of restricted stock
40

 
72

 
43

 
79

Diluted shares outstanding
14,019

 
14,088

 
14,032

 
14,087

Basic net income per share
$
10.34

 
$
5.44

 
$
14.25

 
$
16.65

Diluted net income per share
$
10.31

 
$
5.41

 
$
14.20

 
$
16.55