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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($)
$ in Thousands
Total
Common shares outstanding
Common Stock
Surplus
Accumulated Deficit
Accumulated Other Comprehensive Income (Loss)
Non-Controlling Interests
Balance at Dec. 31, 2015 $ 494,639   $ 548,878 $ 82,847 $ (137,314) $ 203 $ 25
Balance (in shares) at Dec. 31, 2015   31,361,452          
Increase (Decrease) in Shareholders' Equity              
Net income 46,992       46,992    
Other comprehensive income (loss) (1,724)         (1,724)  
Cash dividends (18,619)       (18,619)    
Common stock purchased by directors' deferred compensation plan (681)   (681)        
Common stock repurchased and other related costs $ (18,206)   (18,206)        
Common stock repurchased and other related costs (in shares) (796,822) (796,822)          
Share-based compensation $ 2,274   941 1,333      
Share-based compensation (in shares)   231,613          
Balance at Dec. 31, 2016 504,675   530,932 84,180 (108,941) (1,521) 25
Balance (in shares) at Dec. 31, 2016   30,796,243          
Increase (Decrease) in Shareholders' Equity              
Net income 41,204       41,204    
Other comprehensive income (loss) 482         482  
Cash dividends (21,299)       (21,299)    
Common stock purchased by directors' deferred compensation plan (385)   (385)        
Common stock repurchased and other related costs $ (26,559)   (26,559)        
Common stock repurchased and other related costs (in shares) (864,483) (864,483)          
Share-based compensation $ 1,918   0 1,918      
Share-based compensation (in shares)   92,462          
Non-controlling interests (1)           (1)
Balance at Dec. 31, 2017 500,035   503,988 86,098 (89,036) (1,039) 24
Balance (As Adjusted [Member]) at Dec. 31, 2017 $ 500,035   503,988 86,098 (88,897) (1,178) 24
Balance (in shares) at Dec. 31, 2017 30,024,222 30,024,222          
Balance (in shares) (As Adjusted [Member]) at Dec. 31, 2017   30,024,222          
Increase (Decrease) in Shareholders' Equity              
Impact of adoption of new accounting standards $ (139)       139 (139)  
Impact of adoption of new accounting standards | Accounting Standards Update 2018-02 and Accounting Standards Update 2016-01 [Member]         1,836 (1,836)  
Net income 59,486       59,486    
Other comprehensive income (loss) (13,079)         (13,079)  
Cash dividends (24,143)       (24,143)    
Common stock purchased by directors' deferred compensation plan (504)   (504)        
Common stock repurchased and other related costs $ (32,824)   (32,824)        
Common stock repurchased and other related costs (in shares) (1,155,157) (1,155,157)          
Share-based compensation $ 2,778   0 2,778      
Share-based compensation (in shares)   98,650          
Non-controlling interests (24)           (24)
Balance at Dec. 31, 2018 $ 491,725   $ 470,660 $ 88,876 $ (51,718) $ (16,093) $ 0
Balance (in shares) at Dec. 31, 2018 28,967,715 28,967,715