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Loss Per Common Share
 3 Months Ended
Mar. 31, 2018
Earnings Per Share [Abstract]  
Loss Per Common Share
Loss Per Common Share
Summarized basic and diluted earnings per common share were calculated as follows:
 
Three Months Ended March 31,
(in thousands, except per share data)
2018
 
2017
Numerator:
 
 
 
Net loss
$
(19,843
)
 
$
(6,679
)
Denominator:
 
 
 
Weighted-average shares outstanding
53,406

 
53,217

Effect of dilutive stock awards(1)
—

 
—

Weighted-average dilutive shares
53,406

 
53,217

 
 
 
 
Basic loss per common share
$
(0.37
)
 
$
(0.13
)
Diluted loss per common share
$
(0.37
)
 
$
(0.13
)
Anti-dilutive securities excluded from diluted loss per common share:
 
 
 
Anti-dilutive restricted share units
874

 
731

Anti-dilutive performance share units
1,294

 
888

Anti-dilutive stock options

3,033

 
3,330


(1) 
There was no dilutive effect to the loss per common share for the three months ended March 31, 2018 and 2017 due to the net loss incurred for both periods.