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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Computation for basic and diluted net (loss) income per share
The following table sets forth the computation for basic and diluted earnings (loss) per share:
 
For the years ended December 31,
 
2019
 
2018
 
2017
 
 
 
 
 
 
Numerator
 
 
 
 
 
Net (loss) income
$
(19,482
)
 
$
35,728

 
$
(33,933
)
 
 
 
 
 
 
Denominator
 
 
 
 
 
Basic weighted average common shares outstanding
242,018

 
237,499

 
225,311

Dilutive effect of stock options and restricted stock units
—

 
11,393

 
—

Diluted weighted average common shares outstanding
242,018

 
248,892

 
225,311

Basic (loss) earnings per share
 
 
 
 
 
Basic (loss) earnings per share
$
(0.08
)
 
$
0.15

 
$
(0.15
)
Diluted (loss) earnings per share
 
 
 
 
 
Diluted (loss) earnings (loss) per share
$
(0.08
)
 
$
0.14

 
$
(0.15
)
Securities excluded from calculation of diluted earnings per common share because of anti-dilutive effects
The following shares were excluded from the calculation of diluted earnings (loss) per share because of their anti-dilutive effects:
  
For the years ended December 31,
 
  
2019

 
2018

 
2017

Restricted stock units
10,389

 
3,285

 
11,928

Employee stock options
4,946

 
1,163

 
10,448

 
15,335

 
4,448

 
22,376