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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($)
$ in Thousands
Total
Preferred Stock
Common Stock
Additional Paid-in Capital
Retained Earnings
AOCI Attributable to Parent
Common Stock, Dividends, Per Share, Cash Paid $ 0.18          
Preferred Stock, Dividends, Per Share, Cash Paid $ 16.88          
Balance at Dec. 31, 2020 $ 4,904,611 $ 217,126 $ 75,850 $ 3,028,063 $ 1,407,723 $ 175,849
Balance (in shares) at Dec. 31, 2020     75,850,000      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Preferred dividends paid (3,798)       (3,798)  
Exercise of employee common stock options & related tax benefits 304   $ 13 291    
Exercise of employee common stock options and related tax benefits (in shares)     13,000      
Common dividends paid (13,902)       (13,902)  
Issuance of restricted common shares, net of forfeitures 0   $ 172 (172)    
Issuance of restricted common shares, net of forfeitures (in shares)     172,000      
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes & related tax benefits 3,761   $ (87) 3,848    
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes and related tax benefit (in shares)     (87,000)      
Restricted shares withheld for taxes & related benefits (2,456)   $ (34) (2,422)    
Restricted shares withheld for taxes (in shares)     (34,000)      
Stock-based compensation expense 5,399     5,399    
Net income 125,428       125,428  
Other comprehensive income (loss) (52,301)         (52,301)
Balance at Mar. 31, 2021 $ 4,959,524 217,126 $ 76,088 3,027,311 1,515,451 123,548
Balance (in shares) at Mar. 31, 2021     76,088,000      
Common Stock, Dividends, Per Share, Cash Paid $ 0.22          
Preferred Stock, Dividends, Per Share, Cash Paid $ 16.88          
Balance at Dec. 31, 2021 $ 5,310,607 217,126 $ 76,143 3,045,802 1,864,350 107,186
Balance (in shares) at Dec. 31, 2021     76,143,000      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Preferred dividends paid (3,798)       (3,798)  
Exercise of employee common stock options & related tax benefits 130   $ 6 124    
Exercise of employee common stock options and related tax benefits (in shares)     6,000      
Common dividends paid (16,976)       (16,976)  
Issuance of restricted common shares, net of forfeitures 0   $ 158 (158)    
Issuance of restricted common shares, net of forfeitures (in shares)     158,000      
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes & related tax benefits 5,461   $ (105) 5,566    
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes and related tax benefit (in shares)     (105,000)      
Restricted shares withheld for taxes & related benefits (3,771)   $ (35) (3,736)    
Restricted shares withheld for taxes (in shares)     (35,000)      
Stock-based compensation expense 9,448     9,448    
Net income 129,110       129,110  
Other comprehensive income (loss) (138,339)         (138,339)
Balance at Mar. 31, 2022 $ 5,280,950 $ 217,126 $ 76,377 $ 3,045,914 $ 1,972,686 $ (31,153)
Balance (in shares) at Mar. 31, 2022     76,377,000