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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Retained Earnings
Cost of Common Stock in Treasury
Accumulated Other Comprehensive Income (Loss), Net
Balance at Dec. 31, 2014 $ 614,473 $ 346,535 $ 302,242 $ (43,711) $ 9,407
Increase (Decrease) in Shareholders' Equity          
Net income 29,141   29,141    
Other comprehensive income (loss) (1,115)       (1,115)
Issuance of 104,853 and 112,483 common shares under stock based compensation awards, including related tax effects for the six months ended on June 30, 2016 and 2015, respectively 2,446   (237) 2,683  
Cost of 269,667 and 164,829 shares of common stock acquired for treasury for the six months ended on June 30, 2016 and 2015, respectively (4,678)     (4,678)  
Common stock dividend ($0.360 and $0.327 per share for the six months ended on June 30, 2016 and 2015, respectively) (8,636)   (8,636)    
10% common stock dividend   90,003 (90,003)    
Balance at Jun. 30, 2015 631,631 436,538 232,507 (45,706) 8,292
Balance at Dec. 31, 2015 644,053 436,538 251,812 (50,852) 6,555
Increase (Decrease) in Shareholders' Equity          
Net income 28,297   28,297    
Other comprehensive income (loss) 4,276       4,276
Issuance of 104,853 and 112,483 common shares under stock based compensation awards, including related tax effects for the six months ended on June 30, 2016 and 2015, respectively 2,504   4 2,500  
Cost of 269,667 and 164,829 shares of common stock acquired for treasury for the six months ended on June 30, 2016 and 2015, respectively (8,005)     (8,005)  
Common stock dividend ($0.360 and $0.327 per share for the six months ended on June 30, 2016 and 2015, respectively) (9,369)   (9,369)    
Balance at Jun. 30, 2016 $ 661,756 $ 436,538 $ 270,744 $ (56,357) $ 10,831