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Earnings (Loss) Per Common Share
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Earnings (Loss) Per Common Share
Earnings (Loss) Per Common Share
Summarized basic and diluted earnings per common share were calculated as follows:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(in thousands, except per share data)
2017
 
2016
 
2017
 
2016
Numerator:
 
 
 
 
 
 
 
Net (loss) earnings
$
(12,599
)
 
$
6,181

 
$
(28,171
)
 
$
41,188

Denominator:
 
 
 
 
 
 
 
Weighted-average shares outstanding
53,306

 
53,155

 
53,272

 
53,111

Effect of dilutive stock awards(1)
—

 
299

 
—

 
281

Weighted-average dilutive shares
53,306

 
53,454

 
53,272

 
53,392

 
 
 
 
 
 
 
 
Basic (loss) earnings per common share
$
(0.24
)
 
$
0.12

 
$
(0.53
)
 
$
0.78

Diluted (loss) earnings per common share
$
(0.24
)
 
$
0.12

 
$
(0.53
)
 
$
0.77

Anti-dilutive securities excluded from diluted (loss) earnings per common share:
 
 
 
 
 
 
 
Anti-dilutive restricted share units
1,419

 
814

 
1,419

 
814

Anti-dilutive stock options

3,103

 
3,185

 
3,103

 
2,618


(1) 
There was no dilutive effect to the loss per common share for the three and nine months ended September 30, 2017 due to the net loss incurred for both periods.