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Quarterly Financial Data
 12 Months Ended
Dec. 31, 2019
Quarterly Financial Data [Abstract]  
Quarterly Financial Data 14. Quarterly Financial Data (Unaudited)

The following table presents summarized unaudited quarterly financial data from the consolidated statements of income for each of the eight quarters in the periods ended December 31, 2019 and December 31, 2018. The operating results for any quarter are not necessarily indicative of the results for any subsequent quarter. Basic and diluted net income per share calculations for each quarter is based on the weighted average diluted shares outstanding for that quarter and may not sum to the full year total amount as presented on our consolidated statements of income:

2019

    March 31    

    June 30    

September 30

December 31

Revenue

$

1,308,217

$

1,434,231

$

1,403,697

$

1,440,224

Income from operations

$

110,161

$

120,020

$

115,621

$

98,156

Net income

$

88,132

$

91,028

$

98,582

$

72,416

Basic earnings per share

$

3.18

$

3.28

$

3.55

$

2.61

Diluted earnings per share

$

3.13

$

3.22

$

3.47

$

2.55

2018

    March 31    

    June 30    

September 30

December 31

Revenue

$

1,148,397

$

1,266,520

$

1,225,007

$

1,225,061

Income from operations

$

92,808

$

67,957

$

57,991

$

39,612

Net income

$

59,446

$

46,884

$

38,204

$

32,019

Basic earnings per share

$

2.13

$

1.69

$

1.37

$

1.15

Diluted earnings per share

$

2.13

$

1.68

$

1.36

$

1.15

 
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