Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

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:

	Years Ended December 31,
(dollars in thousands)	2023		2022		2021
Balance at beginning of period	$	1,998,716	$	1,036,994	$	1,036,994
Acquisitions and adjustments	—		961,722		—
Balance at end of period	$	1,998,716	$	1,998,716	$	1,036,994

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
December 31, 2023
Core deposit	$	143,511	$	(72,940)	$	70,571
Customer trust relationships	52,621		(20,942)		31,679
Total intangible assets	$	196,132	$	(93,882)	$	102,250
December 31, 2022
Core deposit	$	170,642	$	(80,951)	$	89,691
Customer trust relationships	56,243		(19,529)		36,714
Total intangible assets	$	226,885	$	(100,480)	$	126,405

Schedule of Estimated Amortization Expense for Future Years

Estimated amortization expense for future years is as follows:

(dollars in thousands)
2024	$	21,239
2025	18,358
2026	15,555
2027	12,867
2028	10,356
Thereafter	23,875
Total	$	102,250