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Segment Information (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
segment
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Segment Reporting [Abstract]      
Number of reportable segments | segment 1    
Segment Reporting Information [Line Items]      
Interest Income $ 1,299,777 $ 1,175,053 $ 877,766
Interest Expense 451,003 348,108 119,090
Salaries and employee benefits 241,022 256,966 238,885
Occupancy and equipment 58,031 60,303 53,417
Data processing expense 36,494 36,329 34,942
Merger and acquisition expenses 0 0 49,594
Other operating expenses 111,389 119,265 98,789
FDIC and state assessment 15,388 25,530 8,428
Electronic banking expense 13,444 14,313 13,632
Income tax expense 120,101 118,954 89,313
Net income 402,241 392,929 305,262
Income (loss) from equity method investments 5,100 12,700 9,900
Depreciation, depletion and amortization 29,200 30,900 31,900
Banking Segment      
Segment Reporting Information [Line Items]      
Interest Income 1,299,777 1,175,053 877,766
Other Revenues 168,574 169,934 175,111
Total consolidated revenues 1,468,351 1,344,987 1,052,877
Interest Expense 451,003 348,108 119,090
Segment net interest income and noninterest income 1,017,348 996,879 933,787
Provision for credit losses on loans 48,070 12,133 63,585
Salaries and employee benefits 241,022 256,966 238,885
Occupancy and equipment 58,031 60,303 53,417
Data processing expense 36,494 36,329 34,942
Merger and acquisition expenses 0 0 49,594
Other operating expenses 36,963 32,967 27,905
FDIC and state assessment 15,388 25,530 8,428
Electronic banking expense 13,444 14,313 13,632
Other segment items 45,594 46,455 48,824
Income tax expense 120,101 118,954 89,313
Net income $ 402,241 $ 392,929 $ 305,262