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Condensed Consolidated Statement of Changes in Shareholders' Equity (Unaudited) - 9 months ended Sep. 30, 2015 - USD ($)
$ in Thousands
Total
Common Stock [Member]
Treasury Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Earnings [Member]
Accumulated Other Comprehensive Loss [Member]
Beginning Balance at Dec. 31, 2014 $ 446,968 $ 201 $ (22,370) $ 199,138 $ 267,189 $ 2,810
Beginning Balance, Shares at Dec. 31, 2014 18,897,686 20,155,936        
Treasury Stock Beginning Balance, Shares at Dec. 31, 2014 (1,258,250)   (1,258,250)      
Comprehensive income $ 47,939       47,389 550
Options exercised $ 1,277 $ 2   1,275    
Options exercised, Shares 156,850 156,850        
Tax benefit from share-based payments $ 1,795     1,795    
Restricted common stock issued 502     502    
Restricted common stock issued, Shares   39,256        
Share-based compensation 612     612    
Dividends to stockholders (8,517)       (8,517)  
Ending Balance at Sep. 30, 2015 $ 490,576 $ 203 $ (22,370) $ 203,322 $ 306,061 $ 3,360
Ending Balance, Shares at Sep. 30, 2015 19,093,792 20,352,042        
Treasury Stock Ending Balance, Shares at Sep. 30, 2015 (1,258,250)   (1,258,250)