Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 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:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollars in thousands)	2023		2022		2023		2022
Balance at beginning of period	$	1,998,716	$	1,997,157	$	1,998,716	$	1,036,994
Acquisitions and adjustments	—		(5,623)		—		954,540
Balance at end of period	$	1,998,716	$	1,991,534	$	1,998,716	$	1,991,534

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
June 30, 2023
Core deposit	$	143,511	$	(63,521)	$	79,990
Customer trust relationships	52,621		(18,452)		34,169
Total other intangible assets	$	196,132	$	(81,973)	$	114,159
December 31, 2022
Core deposit	$	170,642	$	(80,951)	$	89,691
Customer trust relationships	56,243		(19,529)		36,714
Total other 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)
2023 remaining	$	11,909
2024	21,239
2025	18,358
2026	15,555
2027	12,867
Thereafter	34,231
Total	$	114,159