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Earnings per Share (Tables)
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Components of Calculation of Basic and Diluted Earnings Per Share
The following table provides a reconciliation of the components used in the calculation of basic and diluted earnings per share for the periods presented:
 
Year Ended December 31,
 
2019
 
2018
 
2017
Net income – basic and diluted
$
70,589

 
$
224,785

 
$
32,662

 
 
 
 
 
 
Weighted-average shares – basic
15,110

 
15,059

 
14,996

Effect of dilutive securities 1
16

 
233

 
67

Weighted-average shares – diluted
15,126

 
15,292

 
15,063


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1
Represents a combination of unvested RSUs and PRSUs that are dilutive with the exception of December 31, 2019 at which time all of our unvested PRSUs were determined to be at a zero percent vesting level due to the relative performance of our common stock.