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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)
In Thousands, unless otherwise specified
Total
Common stock
Additional paid-in capital
Unearned compensation
Retained earnings
Accumulated other comprehensive (loss) income
Treasury stock
Balance at Dec. 31, 2012 $ 667,265 $ 265 $ 585,360 $ (3,035) $ 122,014 $ (2,979) $ (34,360)
Balance (in shares) at Dec. 31, 2012   25,148          
Comprehensive income:              
Net income 30,606       30,606    
Other comprehensive income (loss) (4,050)         (4,050)  
Total comprehensive income 26,556            
Cash dividends declared $0.54 and $0.54 for the period ended September 30, 2014 and 2013, respectively (13,587)       (13,587)    
Treasury stock purchased (12,249)           (12,249)
Treasury stock purchased (in shares)   (480)          
Forfeited shares     218 1,256     (1,474)
Forfeited shares (in shares)   (55)          
Exercise of stock options 3,021       (3,042)   6,063
Exercise of stock options (in shares)   235          
Restricted stock grants     (677) (3,817)     4,494
Restricted stock grants (in shares)   159          
Stock-based compensation 2,111   726 1,385      
Net tax benefit related to stock-based compensation 1,428   1,428        
Other, net (1,350)   (14)       (1,336)
Other, net (in shares)   (55)          
Balance at Sep. 30, 2013 673,195 265 587,041 (4,211) 135,991 (7,029) (38,862)
Balance (in shares) at Sep. 30, 2013   24,952          
Balance at Dec. 31, 2013 678,062 265 587,247 (5,563) 141,958 (9,057) (36,788)
Balance (in shares) at Dec. 31, 2013   25,036          
Comprehensive income:              
Net income 22,347       22,347    
Other comprehensive income (loss) 11,265         11,265  
Total comprehensive income 33,612            
Cash dividends declared $0.54 and $0.54 for the period ended September 30, 2014 and 2013, respectively (13,694)       (13,694)    
Treasury stock purchased (2,468)           (2,468)
Treasury stock purchased (in shares)   (100)          
Forfeited shares     (6) 176     (170)
Forfeited shares (in shares)   (7)          
Exercise of stock options 1,052       (1,163)   2,215
Exercise of stock options (in shares)   89          
Restricted stock grants     (3) (4,319)     4,322
Restricted stock grants (in shares)   175          
Stock-based compensation 2,857   41 2,816      
Net tax benefit related to stock-based compensation (1,973)   (1,973)        
Other, net (511)   (6)       (505)
Other, net (in shares)   (20)          
Balance at Sep. 30, 2014 $ 696,937 $ 265 $ 585,300 $ (6,890) $ 149,448 $ 2,208 $ (33,394)
Balance (in shares) at Sep. 30, 2014   25,173