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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($)
$ in Thousands
Total
Common Shares Outstanding
Common Stock
Additional Paid-In Capital
Accum. Deficit
Accum. Other Comp. Income (Loss)
Non- Controlling Interest
Balance at beginning 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          
Increase (Decrease) in Shareholders' Equity              
Net income 14,277       14,277    
Other comprehensive income (14,715)         (14,715)  
Cash dividends (of $0.21, $0.23, $0.23, $0.19, $0.21 and $0.21, per share, respectively) (5,670)       (5,670)    
Common stock purchased by directors' deferred compensation plan (14,600, 2,850, and 14,100 shares, net, respectively) (83)   (83)        
Common stock repurchased and retired and other related costs (344,362, and 269,885, and 235,043 shares, respectively) $ (10,111)   (10,111)        
Shares of common stock repurchased and other related costs (in shares) (344,362) (344,362)          
Share-based compensation expense $ 399   0 399     0
Share-based compensation (in shares)   27,262          
Distribution from variable interest entity (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          
Balance at beginning 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          
Increase (Decrease) in Shareholders' Equity              
Net income 43,694            
Other comprehensive income (24,089)         (24,089)  
Balance at end of period at Sep. 30, 2018 478,151   478,721 87,939 (61,406) (27,103)  
Balance (in shares) at Sep. 30, 2018   29,270,398          
Balance at beginning 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          
Increase (Decrease) in Shareholders' Equity              
Net income 14,224       14,224    
Other comprehensive income (3,519)         (3,519)  
Cash dividends (of $0.21, $0.23, $0.23, $0.19, $0.21 and $0.21, per share, respectively) (6,205)       (6,205)    
Common stock purchased by directors' deferred compensation plan (14,600, 2,850, and 14,100 shares, net, respectively) (421)   (421)        
Common stock repurchased and retired and other related costs (344,362, and 269,885, and 235,043 shares, respectively) $ (7,971)   (7,971)        
Shares of common stock repurchased and other related costs (in shares) (269,885) (269,885)          
Share-based compensation expense $ 452     452     0
Share-based compensation (in shares)   52,717          
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          
Increase (Decrease) in Shareholders' Equity              
Net income 15,193       15,193    
Other comprehensive income (5,855)         (5,855)  
Cash dividends (of $0.21, $0.23, $0.23, $0.19, $0.21 and $0.21, per share, respectively) (6,164)       (6,164)    
Common stock repurchased and retired and other related costs (344,362, and 269,885, and 235,043 shares, respectively) $ (6,681)   (6,681)        
Shares of common stock repurchased and other related costs (in shares) (235,043) (235,043)          
Share-based compensation expense $ 990     990      
Share-based compensation (in shares)   15,487          
Balance at end of period at Sep. 30, 2018 478,151   478,721 87,939 (61,406) (27,103)  
Balance (in shares) at Sep. 30, 2018   29,270,398          
Balance at beginning of period 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          
Increase (Decrease) in Shareholders' Equity              
Net income $ 16,037       16,037    
Other comprehensive income 11,238         11,238  
Cash dividends (of $0.21, $0.23, $0.23, $0.19, $0.21 and $0.21, per share, respectively) (6,052)       (6,052)    
Common stock repurchased and retired and other related costs (344,362, and 269,885, and 235,043 shares, respectively) (7,708)   (7,708)        
Shares of common stock repurchased and other related costs (in shares)   (277,000)          
Share-based compensation expense 498   0 498     0
Share-based compensation (in shares)   32,326          
Balance at end of period at Mar. 31, 2019 502,638   462,952 89,374 (41,733) (7,955) 0
Balance (in shares) at Mar. 31, 2019   28,723,041          
Balance at beginning of period 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          
Increase (Decrease) in Shareholders' Equity              
Net income $ 44,125            
Other comprehensive income 28,320         28,320  
Balance at end of period at Sep. 30, 2019 $ 525,227   452,278 90,604 (26,782) 9,127  
Balance (in shares) at Sep. 30, 2019 28,441,341 28,441,341          
Balance at beginning of period at Mar. 31, 2019 $ 502,638   462,952 89,374 (41,733) (7,955) $ 0
Balance (in shares) at Mar. 31, 2019   28,723,041          
Increase (Decrease) in Shareholders' Equity              
Net income 13,534       13,534    
Other comprehensive income 12,413         12,413  
Cash dividends (of $0.21, $0.23, $0.23, $0.19, $0.21 and $0.21, per share, respectively) (6,581)       (6,581)    
Common stock purchased by directors' deferred compensation plan (14,600, 2,850, and 14,100 shares, net, respectively) (416)   (416)        
Common stock repurchased and retired and other related costs (344,362, and 269,885, and 235,043 shares, respectively) (6,243)   (6,243)        
Shares of common stock repurchased and other related costs (in shares)   (213,700)          
Share-based compensation expense 350     350      
Share-based compensation (in shares)   58,436          
Balance at end of period at Jun. 30, 2019 515,695   456,293 89,724 (34,780) 4,458  
Balance (in shares) at Jun. 30, 2019   28,567,777          
Increase (Decrease) in Shareholders' Equity              
Adjusted balance           4,458  
Net income 14,554       14,554    
Other comprehensive income 4,669         4,669  
Cash dividends (of $0.21, $0.23, $0.23, $0.19, $0.21 and $0.21, per share, respectively) (6,556)       (6,556)    
Common stock repurchased and retired and other related costs (344,362, and 269,885, and 235,043 shares, respectively) (4,015)   (4,015)        
Shares of common stock repurchased and other related costs (in shares)   (140,600)          
Share-based compensation expense 880     880      
Share-based compensation (in shares)   14,164          
Balance at end of period at Sep. 30, 2019 $ 525,227   $ 452,278 $ 90,604 $ (26,782) $ 9,127  
Balance (in shares) at Sep. 30, 2019 28,441,341 28,441,341