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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The calculation of basic and diluted earnings per common share are as follows (in thousands, except per share amounts):
 
December 31
 
2019
 
2018
 
2017
Numerator:
 
 
 
 
 
Earnings from continuing operations - basic
$
59,983

 
$
67,883

 
$
21,740

Gain from stock warrants revaluation, net of tax
(6,219
)
 
(7,118
)
 
—

Earnings from continuing operations - diluted
$
53,764

 
$
60,765

 
$
21,740

 
 
 
 
 
 
Denominator:
 
 
 
 
 
Weighted-average shares outstanding for basic earnings per share
58,899

 
58,765

 
58,907

Common equivalent shares:
 
 
 
 
 
Effect of stock-based compensation awards and warrants
10,449

 
9,591

 
779

Weighted-average shares outstanding assuming dilution
69,348

 
68,356

 
59,686

Basic earnings per share from continuing operations
$
1.02

 
$
1.16

 
$
0.37

Diluted earnings per share from continuing operations
$
0.78

 
0.89

 
$
0.36