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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
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 13,079       13,079    
Other comprehensive loss 1,760         1,760  
Cash dividends (of $0.19 and $0.16 per share, respectively) (4,922)       (4,922)    
Shares of common stock repurchased and other related costs $ (3,529)   (3,529)        
Shares of common stock repurchased and other related costs (in shares) (113,750) (113,750)          
Share-based compensation $ 498   0 498      
Share-based compensation (in shares)   18,726          
Non-controlling interest 0           0
Balance at end of period at Mar. 31, 2017 511,561   527,403 84,678 (100,784) 239 25
Balance (in shares) at Mar. 31, 2017   30,701,219          
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
Balance (in shares) at Dec. 31, 2017 30,024,222 30,024,222          
Increase (Decrease) in Shareholders' Equity              
Impact of the adoption of new accounting standards | Accounting Standards Update 2018-02 and Accounting Standards Update 2016-01 $ 0       1,975 (1,975)  
Net income 14,277       14,277    
Other comprehensive loss (14,715)         (14,715)  
Cash dividends (of $0.19 and $0.16 per share, respectively) (5,670)       (5,670)    
Net shares of common stock sold by directors' deferred compensation plan (83)   (83)        
Shares of common stock repurchased and other related costs $ (10,111)   $ (10,111)        
Shares of common stock repurchased and other related costs (in shares) (344,362) (344,362) (344,362)        
Share-based compensation $ 399   $ 0 399     0
Share-based compensation (in shares)   27,262          
Non-controlling interest (24)           (24)
Balance at end of period at Mar. 31, 2018 $ 484,108   $ 493,794 $ 86,497 $ (78,454) $ (17,729) $ 0
Balance (in shares) at Mar. 31, 2018 29,707,122 29,707,122