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Selected Quarterly Financial Data (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2019
Selected Quarterly Financial Data (Unaudited)  
Schedule of quarterly financial information

Quarterly financial information for the years ended December 31, 2019 and 2018 is summarized as follows (in thousands, except per share data):

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2019

 

​

    

Q1

    

Q2

    

Q3

    

Q4

 

Revenue

​

$

538,473

​

$

650,302

​

$

706,918

​

$

719,584

​

Gross profit (1)

​

 

106,665

​

 

120,016

​

 

142,702

​

 

132,560

​

Net income

​

 

19,866

​

 

24,173

​

 

36,233

​

 

34,052

​

INCOME PER SHARE:

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​

​

​

​

​

​

​

​

​

​

​

Basic

​

$

0.54

​

$

0.65

​

$

0.98

​

$

0.93

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Diluted

​

$

0.53

​

$

0.65

​

$

0.98

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$

0.92

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​

​

​

​

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​

​

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​

​

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2018

 

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Q1

    

Q2

    

Q3

    

Q4

 

Revenue

​

$

464,941

​

$

535,043

​

$

594,536

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$

588,359

​

Gross profit

​

 

89,053

​

 

111,183

​

 

127,868

​

 

118,175

​

Net income

​

 

16,659

​

 

32,547

​

 

38,541

​

 

25,156

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INCOME PER SHARE:

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​

​

​

​

​

​

​

​

​

​

​

​

Basic

​

$

0.45

​

$

0.87

​

$

1.03

​

$

0.68

​

Diluted

​

$

0.44

​

$

0.87

​

$

1.02

​

$

0.67

​

(1)In the fourth quarter of 2019, we recorded a $4.8 million gain due to insurance proceeds we received in the fourth quarter related to the ransomware incident that occurred in April 2019.