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Consolidated Statement of Stockholders' Equity (USD $)
In Thousands
Total
Common Stock
Additional Paid-in Capital
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2010$ 457,161$ 997$ 201,442$ 618,813$ (346,064)$ (18,027)
Balance (in shares) at Dec. 31, 2010 99,701    
Increase (Decrease) in Stockholders' Equity      
Net income135,437  135,437  
Recognition of equity compensation34,490 34,490   
Issuance of nonvested shares and other  (28,047) 28,047 
Dividends accrued, $0.60 per share(51,606)  (51,606)  
Exercise of stock options4,822 941 3,881 
Excess tax benefits from share-based payment arrangements7,873 7,873   
Repurchase of common stock(57,100)   (57,100) 
Unrealized depreciation on available for sale investment securities(5,657)    (5,657)
Valuation allowance on investment securities' deferred tax asset(4,129)    (4,129)
Pension and postretirement benefits1,171    1,171
Reclassification adjustment for amounts included in net income(1,428)    (1,428)
Balance at Sep. 30, 2011$ 521,034$ 997$ 216,699$ 702,644$ (371,236)$ (28,070)
Balance (in shares) at Sep. 30, 2011 99,701