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Business Combinations - Pro Forma Information (Details) - Happy Bancshares, Inc. - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Business Acquisition [Line Items]    
Total interest income $ 935,168 $ 839,407
Total non-interest income 188,012 190,550
Net income available to all shareholders $ 406,949 $ 317,190
Basic earnings per common share (in dollars per share) $ 1.98 $ 1.53
Diluted earnings per common share (in dollars per share) $ 1.98 $ 1.53