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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2017
Earnings Per Share [Abstract]  
Schedule of basic and diluted EPS calculations
The basic and diluted EPS calculations for the three months ended March 31, 2017 and 2016 are presented below:
 
 
Three Months Ended March 31,
(in thousands, except per share amounts)
 
2017
 
2016
Income (loss) attributable to common stockholders
 
$
3,744

 
$
(6,756
)
 
 
 
 
 
Weighted average common shares outstanding, basic
 
66,692

 
65,338

Effect of dilutive securities:
 
 
 
 
Restricted stock
 
83

 
—

Restricted stock units
 
178

 
—

Stock options
 
233

 
—

Weighted average common shares outstanding, diluted
 
67,186

 
65,338

 
 
 
 
 
Basic income (loss) per common share
 
$
0.06

 
$
(0.10
)
Diluted income (loss) per common share
 
$
0.06

 
$
(0.10
)
Schedule of anti-dilutive securities excluded from computation of earnings per share
The following table provides the securities that could potentially dilute EPS in the future, but were not included in the computation of diluted EPS for the periods presented because to do so would have been anti-dilutive. The amounts included in this table exclude performance-based restricted stock units. The number of currently outstanding performance-based restricted stock units that are issued upon vesting could range from zero to a maximum of 364,652.
 
 
Three Months Ended March 31,
(in thousands)
 
2017
 
2016
Restricted stock
 
—

 
362

Restricted stock units
 
21

 
357

Stock options
 
303

 
1,222