Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Carrying Value of Intangible Assets Subject to Amortization

Identifiable intangible assets with finite lives are amortized over the periods benefited and are evaluated for impairment similar to other long-lived assets. The purchase and carrying values of intangible assets subject to amortization at December 31, 2024 and 2023 were as follows:

	December 31, 2024
	Purchase		Accumulated		Carrying
($ in thousands)	Value		Amortization		Value
Core deposit intangibles	$	235,845	$	217,260	$	18,585
Credit card and trust relationships		49,962		33,323		16,639
Total	$	285,807	$	250,583	$	35,224

	December 31, 2023
	Purchase		Accumulated		Carrying
($ in thousands)	Value		Amortization		Value
Core deposit intangibles	$	235,845	$	209,658	$	26,187
Credit card and trust relationships		49,962		31,512		18,450
Total	$	285,807	$	241,170	$	44,637

Aggregate Amortization Expense

Aggregate amortization expense by category of finite lived intangible assets for the years ended December 31, 2024, 2023, and 2022 are as follows:

	Years Ended December 31,
($ in thousands)	2024		2023		2022
Core deposit intangibles	$	7,602	$	9,613	$	11,909
Credit card and trust relationships		1,811		1,943		2,124
Total	$	9,413	$	11,556	$	14,033

Estimated Amortization Expense of Other Intangible Assets

The following table shows estimated amortization expense of other intangible assets at December 31, 2024 for the five succeeding years and all years thereafter, calculated based on current amortization schedules.

($ in thousands)
2025	$	7,985
2026		5,322
2027		3,682
2028		3,306
2029		2,982
Thereafter		11,947
Total	$	35,224