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Consolidated Statement of Stockholders' Equity (Unaudited) (USD $)
In Millions
Total
Common Stock
Additional Paid-In Capital
Treasury Stock
Retained Earnings
Accumulated Other Comprehensive Loss
Balance at December 31, 2011 at Dec. 31, 2011 $ 343.1 $ 0.3 $ 291.5 $ (88.1) $ 259.4 $ (120.0)
Net income 40.1       40.1  
Changes in cumulative translation adjustment 1.2         1.2
Changes in unrealized gains/(losses) on derivative instruments, net of tax (0.1)         (0.1)
Treasury stock re-issued 1.1   (1.8) 2.9    
Treasury stock repurchased (1.3)     (1.3)    
Stock option compensation 1.6   1.6      
Amortization of prior service credit, net of tax (0.4)         (0.4)
Amortization of actuarial net losses, net of tax 0.4         0.4
Balance at Jun 30, 2012 at Jun. 30, 2012 $ 385.7 $ 0.3 $ 291.3 $ (86.5) $ 299.5 $ (118.9)