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Goodwill and Other Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Changes in Carrying Amount of Goodwill
The following table presents the changes in the carrying amount of goodwill:
Three Months Ended
September 30,		Nine Months Ended
September 30,
(dollars in thousands)2024202320242023
Balance at beginning of period$2,170,709 $1,998,716 $1,998,716 $1,998,716 
Acquisitions and adjustments6,290 — 178,283 — 
Balance at end of period$2,176,999 $1,998,716 $2,176,999 $1,998,716 
Schedule of Gross Carrying Amounts and Accumulated Amortization of Other Intangible Assets
The gross carrying amounts and accumulated amortization of other intangible assets were as follows: 
(dollars in thousands)Gross
Carrying
Amount		Accumulated
Amortization
and Impairment		Net
Carrying
Amount
September 30, 2024   
Core deposit$189,636 $(89,825)$99,811 
Customer trust relationships52,621 (24,347)28,274 
Total other intangible assets$242,257 $(114,172)$128,085 
December 31, 2023
Core deposit$143,511 $(72,940)$70,571 
Customer trust relationships52,621 (20,942)31,679 
Total other intangible assets$196,132 $(93,882)$102,250 
Schedule of Estimated Amortization Expense for Future Years
Estimated amortization expense for future years is as follows:
(dollars in thousands) 
2024 remaining$7,238 
202526,116 
202622,474 
202718,947 
202815,598 
Thereafter37,712 
Total$128,085