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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2017
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Earnings Per Share
The following table sets forth the computation of basic and diluted earnings per share of our common stock:
 
Three Months Ended March 31,
(in thousands, except per share amounts)
2017
2016
Net income (loss) attributable to shareholders
$
(7,045
)
$
10,507

 
 
 
Weighted average shares used to calculate basic earnings per share
48,740

51,627

Dilutive effect of stock options, restricted stock and performance shares (1)
—

594

Weighted average shares used to calculate diluted earnings per share
48,740

52,221

 
 
 
Basic earnings (loss) per share:
$
(0.14
)
$
0.20

 
 
 
Diluted earnings (loss) per share:
$
(0.14
)
$
0.20