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Earnings per share
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Earnings (loss) per share
Earnings (loss) per share

Basic EPS amounts are calculated by dividing earnings available to common shareholders 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 2013, 2012, and 2011:
 
For the year ended December 31, 2013
 
Net loss
Shares (000)
Per-Share
Net loss
$
(40,313
)
 
 
Amount allocated to common shareholders (1)
100.00
%
 
 
Basic and Diluted EPS:
 

 
 
Loss available to common shareholders
$
(40,313
)
88,612

$
(0.45
)
 
For the year ended December 31, 2012
 
Net loss
Shares (000)
Per-Share
Net loss
$
(35,610
)
 

 
Amount allocated to common shareholders (1)
100.00
%
 

 
Basic and Diluted EPS:
 

 

 
Loss available to common shareholders
$
(35,610
)
88,534

$
(0.40
)
 
For the year ended December 31, 2011
 
Net income
Shares (000)
Per-Share
Net income
$
11,325

 

 
Amount allocated to common shareholders
91.87
%
 

 
Basic EPS:
 

 

 
Income allocable to common shareholders
$
10,404

91,854

$
0.11

Effect of Dilutive Securities:
 

 

 

Share-based compensation plans
 

403

 

Diluted EPS:
 

 

 

Income applicable to common shareholders with assumed conversion
$
10,404

92,257

$
0.11


(1)
We have not allocated net losses between common and preferred shareholders, as the holders of our preferred shares do not have a contractual obligation to share in the loss.

Antidilutive securities excluded from the calculation of diluted EPS:
 
 
 
 
2013
2012
2011
Stock options (1)
619,833

626,334

353,000

Service-based share awards (1)
442,737

396,133

—


 
(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.