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Consolidated Statements of Changes in Shareholders' Equity - USD ($)
$ in Thousands
Total
Cumulative Effect Adjustments [Member]
Adjusted Balance [Member]
Common Stock
Common Stock
Adjusted Balance [Member]
Capital Surplus
Capital Surplus
Adjusted Balance [Member]
Retained Earnings
Retained Earnings
Cumulative Effect Adjustments [Member]
Retained Earnings
Adjusted Balance [Member]
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)
Adjusted Balance [Member]
Treasury Stock
Treasury Stock
Adjusted Balance [Member]
Beginning Balance at Dec. 31, 2019 $ 2,606,440 $ (7,039) $ 2,599,401 $ 55,057 $ 55,057 $ 1,073,764 $ 1,073,764 $ 1,672,438 $ (7,039) $ 1,665,399 $ 83,180 $ 83,180 $ (277,999) $ (277,999)
Total comprehensive income (loss) 346,105             130,182     215,923      
Dividends (45,192)             (45,192)            
Purchase of treasury stock (59,565)         615             (60,180)  
Issuances of equity awards, net of forfeitures 608         565             43  
Recognition of equity-based compensation 9,834         9,834                
Sale of treasury stock 469         158             311  
Exercise of stock options 2,520         439             2,081  
Ending Balance at Sep. 30, 2020 2,854,180     55,057   1,085,375   1,750,389     299,103   (335,744)  
Beginning Balance at Jun. 30, 2020 2,777,395     55,057   1,081,713   1,692,289     284,262   (335,926)  
Total comprehensive income (loss) 87,933             73,092     14,841      
Dividends (14,992)             (14,992)            
Purchase of treasury stock (106)                       (106)  
Issuances of equity awards, net of forfeitures 15         (111)             126  
Recognition of equity-based compensation 3,725         3,725                
Sale of treasury stock 148         38             110  
Exercise of stock options 62         10             52  
Ending Balance at Sep. 30, 2020 2,854,180     55,057   1,085,375   1,750,389     299,103   (335,744)  
Beginning Balance at Dec. 31, 2020 3,016,948     55,057   1,090,450   1,891,246     318,340   (338,145)  
Total comprehensive income (loss) 120,489             274,522     (154,033)      
Dividends (49,200)             (49,200)            
Purchase of treasury stock (4,269)                       (4,269)  
Issuances of equity awards, net of forfeitures 695         (4,374)             5,069  
Recognition of equity-based compensation 13,401         13,401                
Sale of treasury stock 437         223             214  
Exercise of stock options 14,339         3,118             11,221  
Ending Balance at Sep. 30, 2021 3,112,840     55,057   1,102,818   2,116,568     164,307   (325,910)  
Beginning Balance at Jun. 30, 2021 3,090,244     55,057   1,098,139   2,040,134     223,107   (326,193)  
Total comprehensive income (loss) 35,667             94,467     (58,800)      
Dividends (18,033)             (18,033)            
Purchase of treasury stock (181)                       (181)  
Issuances of equity awards, net of forfeitures           (252)             252  
Recognition of equity-based compensation 4,791         4,791                
Sale of treasury stock 136         75             61  
Exercise of stock options 216         65             151  
Ending Balance at Sep. 30, 2021 $ 3,112,840     $ 55,057   $ 1,102,818   $ 2,116,568     $ 164,307   $ (325,910)