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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2017
Earnings Per Share [Abstract]  
Earnings Per Share
Summarized basic and diluted earnings per common share were calculated as follows:
 
Three Months Ended March 31,
(in thousands, except per share data)
2017
 
2016
Numerator:
 
 
 
Net (loss) earnings
$
(6,679
)
 
$
25,061

Denominator:
 
 
 
Weighted-average shares outstanding
53,217

 
53,085

Effect of dilutive stock awards
—

 
257

Weighted-average dilutive shares
53,217

 
53,342

 
 
 
 
Basic (loss) earnings per common share
$
(0.13
)
 
$
0.47

Diluted (loss) earnings per common share
$
(0.13
)
 
$
0.47