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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 Interest
As Adjusted
As Adjusted
Common Shares Outstanding
As Adjusted
Common Stock
As Adjusted
Surplus
As Adjusted
Accumulated Deficit
As Adjusted
Accumulated Other Comprehensive Income (Loss)
As Adjusted
Non- Controlling Interest
Balance at beginning of period 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 25,104       25,104                  
Other comprehensive loss 4,745         4,745                
Cash dividends (of $0.40 and $0.34 per share, respectively) (10,432)       (10,432)                  
Net shares of common stock sold by directors' deferred compensation plan (341)   (341)                      
Shares of common stock repurchased and other related costs $ (11,208)   (11,208)                      
Shares of common stock repurchased and other related costs (in shares) (362,371) (362,371)                        
Share-based compensation $ 412   0 412                    
Share-based compensation (in shares)   80,927                        
Balance at end of period at Jun. 30, 2017 512,955   519,383 84,592 (94,269) 3,224 25              
Balance (in shares) at Jun. 30, 2017   30,514,799                        
Balance at beginning of period 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                            
Shares of common stock repurchased and other related costs (in shares)     (864,483)                      
Balance at end of period at Dec. 31, 2017 $ 500,035   $ 503,988 86,098 (89,036) (1,039) 24 $ 500,035   $ 503,988 $ 86,098 $ (88,897) $ (1,178) $ 24
Balance (in shares) at Dec. 31, 2017 30,024,222 30,024,222             30,024,222          
Increase (Decrease) in Shareholders' Equity                            
Impact of the adoption of new accounting standards $ 0       139 (139)                
Impact of the adoption of new accounting standards | Accounting Standards Update 2018-02 and Accounting Standards Update 2016-01           (139)                
Impact of the adoption of new accounting standards | Accounting Standards Update 2018-02 and Accounting Standards Update 2016-01 0       1,836 (1,836)                
Net income 28,501       28,501                  
Other comprehensive loss (18,234)         (18,234)                
Cash dividends (of $0.40 and $0.34 per share, respectively) (11,875)       (11,875)                  
Net shares of common stock sold by directors' deferred compensation plan (504)   (504)                      
Shares of common stock repurchased and other related costs $ (18,082)   $ (18,082)                      
Shares of common stock repurchased and other related costs (in shares) (614,247) (614,247) (614,247)                      
Share-based compensation $ 851   $ 0 851     0              
Share-based compensation (in shares)   79,979                        
Distribution from variable interest entity (24)           (24)              
Balance at end of period at Jun. 30, 2018 $ 480,668   $ 485,402 $ 86,949 $ (70,435) $ (21,248) $ 0              
Balance (in shares) at Jun. 30, 2018 29,489,954 29,489,954