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Quarterly Results Of Operations (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]  
Summary Of Quarterly Results Of Operations
The Company’s quarterly results of operations for the years ended December 31, 2016 and 2015 are summarized in the tables below:
 
Three Month Periods Ended
 
March 31
 
June 30
 
September 30
 
December 31
2016
 
 
 
 
 
 
 
Total revenues
$
2,147,527

 
$
1,797,793

 
$
1,834,168

 
$
1,752,292

Income before provision for income taxes
337,507

 
235,512

 
220,858

 
54,711

Net income
220,318

 
169,349

 
144,367

 
31,316

Basic per share data:
 
 
 
 
 
 
 
Income before provision for income taxes
$
5.19

 
$
3.78

 
$
3.66

 
$
0.95

Net income
$
3.38

 
$
2.72

 
$
2.40

 
$
0.54

Diluted per share data:
 
 
 
 
 
 
 
Income before provision for income taxes
$
5.12

 
$
3.75

 
$
3.63

 
$
0.94

Net income
$
3.34

 
$
2.70

 
$
2.37

 
$
0.54

 
 
 
 
 
 
 
 
 
March 31
 
June 30
 
September 30
 
December 31
2015
 
 
 
 
 
 
 
Total revenues
$
2,598,610

 
$
2,644,894

 
$
2,534,156

 
$
2,547,834

Income (loss) before provision (benefit) for income taxes
83,193

 
40,025

 
(32,251
)
 
110,214

Net income (loss)
50,044

 
32,789

 
(7,022
)
 
65,744

Basic per share data:
 
 
 
 
 
 
 
Income (loss) before provision (benefit) for income taxes
$
1.19

 
$
0.58

 
$
(0.48
)
 
$
1.65

Net income (loss)
$
0.72

 
$
0.48

 
$
(0.10
)
 
$
0.99

Diluted* per share data:
 
 
 
 
 
 
 
Income (loss) before provision (benefit) for income taxes
$
1.18

 
$
0.58

 
$
(0.48
)
 
$
1.63

Net income (loss)
$
0.71

 
$
0.47

 
$
(0.10
)
 
$
0.97


* In accordance with earnings per share guidance, diluted per share amounts are computed in the same manner as basic per share amounts when a loss from operations exists.