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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 following table shows the calculation of basic and diluted earnings (loss) per share (in thousands, except per share amounts):
 
 
Year Ended December 31,
 
 
2019
 
2018
 
2017
Net income (loss)
 
$
13,631

 
$
11,783

 
$
(22,567
)
 
 
 
 
 
 
 
Basic weighted average common shares outstanding
 
129,049

 
128,071

 
115,709

Add: Dilutive effect restricted common stock
 
1,215

 
1,982

 
—

Add: Dilutive effect of stock options outstanding
 
787

 
933

 
—

Diluted weighted average common shares outstanding
 
131,051

 
130,986

 
115,709

 
 
 
 
 
 
 
Earnings per share:
 
 
 
 
 
 
Basic
 
$
0.11

 
$
0.09

 
$
(0.20
)
Diluted
 
$
0.10

 
$
0.09

 
$
(0.20
)
Schedule of Anti-Dilutive Shares Excluded From The Calculation of Diluted Loss Per Share
The following table shows anti-dilutive shares excluded from the calculation of diluted loss per share (in thousands):
 
 
Year Ended December 31,
 
 
2019
 
2018
 
2017
Anti-dilutive effect of restricted shares
 
495

 
—

 
3,328

Anti-dilutive effect of stock options outstanding
 
1,649

 
1,452

 
1,711

Anti-dilutive effect of performance units
 
—

 
—

 
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