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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2018
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):
 
Three Months Ending March 31,
 
2018
 
2017
Numerator:
 
 
 
Earnings from continuing operations - basic
$
15,682

 
$
9,796

Gain from stock warrants revaluation, net of tax
—

 
(1,539
)
Earnings from continuing operations - diluted
$
15,682

 
$
8,257

 
 
 
 
Denominator:
 
 
 
Weighted-average shares outstanding for basic earnings per share
58,840

 
59,133

Common equivalent shares:
 
 
 
Effect of stock-based compensation awards and warrants
718

 
5,816

Weighted-average shares outstanding assuming dilution
59,558

 
64,949

Basic earnings per share from continuing operations
$
0.27

 
$
0.17

Diluted earnings per share from continuing operations
$
0.26

 
$
0.13