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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Legal Surplus [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2015   $ 176,000 $ 52,626 $ 540,512 $ 70,435 $ 148,886 $ (105,379) $ 13,997
Conversion of convertible preferred stocks to common stocks   0   0        
Preferred stocks converted to common stocks     0          
Stock-based compensation expense       1,270        
Stock-based compensation excess tax benefit recognized in income       0        
Lapsed restricted stock units       (834)     519  
Transfer from retained earnings/transfer to legal surplus         5,858 (5,858)    
Net income $ 59,186         59,186    
Cash dividends declared on common stock           (10,544)    
Cash dividends declared on preferred stock           (13,862)    
Other comprehensive (loss) income, net of tax (12,401)             (12,401)
Ending Balance at Dec. 31, 2016 920,411 176,000 52,626 540,948 76,293 177,808 (104,860) 1,596
Conversion of convertible preferred stocks to common stocks   0   0        
Preferred stocks converted to common stocks     0          
Stock-based compensation expense       1,109        
Stock-based compensation excess tax benefit recognized in income (99)     (99)        
Lapsed restricted stock units       (358)     358  
Transfer from retained earnings/transfer to legal surplus         5,161 (5,161)    
Net income 52,646         52,646    
Cash dividends declared on common stock           (10,553)    
Cash dividends declared on preferred stock           (13,862)    
Other comprehensive (loss) income, net of tax (4,545)             (4,545)
Ending Balance at Dec. 31, 2017 945,107 176,000 52,626 541,600 81,454 200,878 (104,502) (2,949)
Conversion of convertible preferred stocks to common stocks   (84,000)   76,741        
Preferred stocks converted to common stocks     7,259          
Stock-based compensation expense       1,401        
Stock-based compensation excess tax benefit recognized in income 0     0        
Lapsed restricted stock units       (361)     869  
Transfer from retained earnings/transfer to legal surplus         8,713 (8,713)    
Net income 84,410         84,410    
Cash dividends declared on common stock           (11,511)    
Cash dividends declared on preferred stock           (12,024)    
Other comprehensive (loss) income, net of tax (8,014)             (8,014)
Ending Balance at Dec. 31, 2018 $ 999,877 $ 92,000 $ 59,885 $ 619,381 $ 90,167 $ 253,040 $ (103,633) $ (10,963)