XML 39 R18.htm IDEA: XBRL DOCUMENT v3.3.1.900
Earnings (loss) per share
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Earnings (loss) per share
Earnings (loss) per share
Basic earnings (loss) per share ("EPS") amounts are calculated by dividing net income (loss) allocated to common stockholders by the weighted average number of common shares outstanding.  Diluted EPS amounts assume the issuance of common stock for all potentially dilutive common shares outstanding.  
The following table shows the basic and diluted earnings (loss) per share for 2015, 2014, and 2013:
 
For the year ended December 31, 2015
 
Net loss
Shares (000)
Per-Share
Net loss
$
(59,310
)
 
 
Amount allocated to common stockholders
100.00
%
 
 
Basic and Diluted EPS:
 

 
 
Net loss allocated to common stockholders
(59,310
)
87,375

$
(0.68
)
 
For the year ended December 31, 2014
 
Net income
Shares (000)
Per-Share
Net income
$
126,474

 

 
Amount allocated to common stockholders
91.81
%
 

 
Basic EPS:
 

 

 
Net income allocated to common stockholders
116,118

88,823

$
1.31

Effect of Dilutive Securities:
 
 
 
Share-based compensation plans
 
605

 
Diluted EPS:
$
116,118

89,428

$
1.30


 
For the year ended December 31, 2013
 
Net loss
Shares (000)
Per-Share
Net loss
$
(40,313
)
 

 
Amount allocated to common stockholders
100.00
%
 

 
Basic and Diluted EPS:
 

 

 
Net loss allocated to common stockholders
$
(40,313
)
88,612

$
(0.45
)


Securities excluded from the calculation of diluted EPS:
 
 
 
 
2015
2014
2013
Stock options (1)
356,634

320,553

619,833

Service-based share awards (1)
608,914

—

442,737

 
(1)
In periods when we report a net loss, all share awards are excluded from the calculation of diluted weighted average shares outstanding because of their antidilutive effect on earnings (loss) per share.