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Earnings (Loss) Per Share
 6 Months Ended
Jun. 30, 2011
Earnings (Loss) Per Share [Abstract]  
EARNINGS (LOSS) PER SHARE
10. EARNINGS (LOSS) PER SHARE
Earnings (loss) per share — basic is computed by dividing income or loss available to common stockholders by the weighted average number of shares of common stock outstanding for the period. Earnings (loss) per share — diluted reflects the potential dilution that could occur if options issued under stock-based compensation awards were exercised and converted into common stock. For the three months ended June 30, 2011 and 2010, options to purchase 1.8 million and 1.6 million shares of the Company’s common stock had exercise prices that were greater than the average market price of those shares during the respective reporting periods. For the six months ended June 30, 2011 and 2010, options to purchase 1.5 million and 1.5 million shares of the Company’s common stock had exercise prices that were greater than the average market price of those shares during the respective reporting periods. As a result, these shares are excluded from the earnings (loss) per share calculation as they are anti-dilutive.
The following is a computation of earnings (loss) per share — basic and diluted — for the three and six months ended June 30, 2011 and 2010:
Computation of Earnings (Loss) per Common Share
                                 
    Three months ended     Six months ended  
    June 30,     June 30,  
($ in millions, except per share data)   2011     2010     2011     2010  
Income (loss) from continuing operations
  $ 5.7     $ (0.5 )   $ 0.4     $ (4.5 )
Gain (loss) from discontinued operations and disposal, net of tax
    0.3       (2.2 )     0.3       (3.2 )
 
                       
Net income (loss)
  $ 6.0     $ (2.7 )   $ 0.7     $ (7.7 )
 
                       
Average shares outstanding — basic
    62.2       57.1       62.2       53.0  
Dilutive effect of stock options and other
    —       0.1       —       0.1  
 
                       
Diluted shares outstanding
    62.2       57.2       62.2       53.1  
 
                       
Basic and diluted loss per share:
                               
Earnings (loss) from continuing operations
  $ 0.09     $ (0.01 )   $ 0.01     $ (0.09 )
Gain (loss) from discontinued operations and disposal
    0.01       (0.04 )     —       (0.06 )
 
                       
Gain (loss) per share
  $ 0.10     $ (0.05 )   $ 0.01     $ (0.15 )
 
                       
Weighted average common shares outstanding:
                               
Basic
    62.2       57.1       62.2       53.0  
Diluted
    62.2       57.2       62.2       53.1