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Quarterly Operating Results (Notes)
 12 Months Ended
Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Information [Text Block] Quarterly Operating Results (Unaudited)
Quarterly operating results for 2018 and 2017 were as follows:
(in thousands, except per share data)
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
2018
 
 

 
 

 
 

 
 

 
Total revenues
 
$
501,461

 
$
473,187

 
$
530,850

 
$
508,748

 
Total expenses
 
$
383,020

 
$
372,277

 
$
388,350

 
$
408,137

 
Income before income taxes
 
$
118,441

 
$
100,910

 
$
142,500

 
$
100,611

 
Net income
 
$
90,828

 
$
73,922

 
$
106,053

 
$
73,452

 
Net income per share:
 
 
 
 
 
 
 
 
 
Basic
 
$
0.33

 
$
0.27

 
$
0.38

 
$
0.26

 
Diluted
 
$
0.32

 
$
0.26

 
$
0.38

 
$
0.26

 
2017
 
 
 
 
 
 
 
 
 
Total revenues
 
$
465,080

 
$
466,305

 
$
475,646

 
$
474,316

 
Total expenses
 
$
354,113

 
$
358,303

 
$
351,227

 
$
367,982

 
Income before income taxes
 
$
110,967

 
$
108,002

 
$
124,419

 
$
106,334

 
Net income
 
$
70,110

 
$
66,102

 
$
75,913

 
$
187,505

 
Net income per share:
 
 
 
 
 
 
 
 
 
Basic(1)
 
$
0.25

 
$
0.24

 
$
0.27

 
$
0.68

 
Diluted(1)
 
$
0.25

 
$
0.23

 
$
0.27

 
$
0.66

(2) 
(1)
2017 reflects the 2-for-1 stock split that occurred on March 28, 2018.
(2)
Includes $0.43 impact associated with recording impact of the Tax Reform Act.
Quarterly financial results are affected by seasonal variations. The timing of the Company’s policy renewals and acquisitions may cause revenues, expenses and net income to vary significantly between quarters.