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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)
In Thousands, except Share data
Total
Common Stock
Paid-in Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Treasury Stock
Beginning Balance at Dec. 31, 2010 $ 553,599 $ 873 $ 183,524 $ 740,923 $ (63,026) $ (308,695)
Beginning Balance (in shares) at Dec. 31, 2010   69,876,000        
Net income 156,075     156,075    
Other comprehensive income (loss) (8,854)       (8,854)  
Dividends declared on common stock (23,361)     (23,361)    
Stock compensation expense 6,251   6,251      
Stock option exercises, including tax benefit of $1,754 in 2011 and $580 in 2012 (in shares)   136,000        
Stock option exercises, including tax benefit of $1,754 in 2011 and $580 in 2012 2,870 1 2,869      
Net issuance of treasury stock for vested restricted stock units, including tax benefit of $1,856 in 2011 and $905 in 2012 (in shares)   229,000        
Net issuance of treasury stock for vested restricted stock units, including tax benefit of $1,856 in 2011 and $905 in 2012 (3,272)   (595)     (2,677)
Repurchases of common stock (in shares)   (441,000)        
Repurchases of common stock (15,797)         (15,797)
Ending Balance at Sep. 30, 2011 667,511 874 192,049 873,637 (71,880) (327,169)
Ending Balance (in shares) at Sep. 30, 2011   69,800,000        
Beginning Balance at Dec. 31, 2011 657,994 875 196,626 902,987 (115,282) (327,212)
Beginning Balance (in shares) at Dec. 31, 2011   69,884,000        
Net income 121,987     121,987    
Other comprehensive income (loss) 10,502       10,502  
Dividends declared on common stock (25,371)     (25,371)    
Stock compensation expense 5,283   5,283      
Stock option exercises, including tax benefit of $1,754 in 2011 and $580 in 2012 (in shares)   36,000        
Stock option exercises, including tax benefit of $1,754 in 2011 and $580 in 2012 775 1 774      
Net issuance of treasury stock for vested restricted stock units, including tax benefit of $1,856 in 2011 and $905 in 2012 (in shares)   89,000        
Net issuance of treasury stock for vested restricted stock units, including tax benefit of $1,856 in 2011 and $905 in 2012 (967)   24     (991)
Repurchases of common stock (in shares) (799,533) (799,000)        
Repurchases of common stock (33,863)         (33,863)
Ending Balance at Sep. 30, 2012 $ 736,340 $ 876 $ 202,707 $ 999,603 $ (104,780) $ (362,066)
Ending Balance (in shares) at Sep. 30, 2012   69,210,000