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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]
Retained Earnings [Member]
Accumulated Other Comprehensive Income [Member]
Balance at beginning of period at Dec. 31, 2019   $ 36,104 $ 21,736 $ 941,652 $ 1,221,817 $ 6,764
Common stock repurchases     (5) (201)    
Restricted stock grants     90 (90)    
Unrestricted stock grants     2 (2)    
Vesting of performance shares unit     0 0    
Restricted stock forfeited     0 0    
Stock-based compensation expense       3,854    
Net income $ 52,135       52,135  
Dividends on common stock         (32,808)  
Dividends on preferred stock         (2,007)  
Other comprehensive income (loss), net of tax 38,563         38,563
Balance at end of period at Sep. 30, 2020 2,225,282 36,104 21,823 945,213 1,176,815 45,327
Balance at beginning of period at Jun. 30, 2020   36,104 21,816 943,816 1,159,828 53,270
Common stock repurchases     0 (8)    
Restricted stock grants     5 (5)    
Unrestricted stock grants     2 (2)    
Vesting of performance shares unit     0 0    
Restricted stock forfeited     0 0    
Stock-based compensation expense       1,412    
Net income 28,613       28,613  
Dividends on common stock         (10,957)  
Dividends on preferred stock         (669)  
Other comprehensive income (loss), net of tax (7,943)         (7,943)
Balance at end of period at Sep. 30, 2020 2,225,282 36,104 21,823 945,213 1,176,815 45,327
Balance at beginning of period at Dec. 31, 2020 2,275,179 36,104 21,823 946,476 1,215,321 55,455
Common stock repurchases     (1,233) (151,384)    
Restricted stock grants     32 (32)    
Unrestricted stock grants     0 0    
Vesting of performance shares unit     30 (30)    
Restricted stock forfeited     (2) 2    
Stock-based compensation expense       4,100    
Net income 207,386       207,386  
Dividends on common stock         (44,903)  
Dividends on preferred stock         (2,007)  
Other comprehensive income (loss), net of tax (89,173)         (89,173)
Balance at end of period at Sep. 30, 2021 2,197,965 36,104 20,650 799,132 1,375,797 (33,718)
Balance at beginning of period at Jun. 30, 2021   36,104 21,065 847,412 1,315,352 (14,978)
Common stock repurchases     (416) (49,625)    
Restricted stock grants     2 (2)    
Unrestricted stock grants     0 0    
Vesting of performance shares unit     0 0    
Restricted stock forfeited     (1) 1    
Stock-based compensation expense       1,346    
Net income 75,678       75,678  
Dividends on common stock         (14,564)  
Dividends on preferred stock         (669)  
Other comprehensive income (loss), net of tax (18,740)         (18,740)
Balance at end of period at Sep. 30, 2021 $ 2,197,965 $ 36,104 $ 20,650 $ 799,132 $ 1,375,797 $ (33,718)