Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Carrying Amounts of Goodwill by Operating Segments

The carrying amounts of goodwill by operating segments for the three months ended March 31, 2024 are set forth in the table below.

	Community Banks		Insurance		Total
Balance at January 1, 2024	$	988,898	$	2,767	$	991,665
Additions to goodwill and other adjustments	—		—		—
Balance at March 31, 2024	$	988,898	$	2,767	$	991,665

Schedule of Finite-Lived Intangible Assets

The following table provides a summary of finite-lived intangible assets as of the dates presented:

	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
March 31, 2024
Core deposit intangibles	$	82,492	$	(69,297)	$	13,195
Customer relationship intangible	7,670		(3,282)		4,388
Total finite-lived intangible assets	$	90,162	$	(72,579)	$	17,583
December 31, 2023
Core deposit intangibles	$	82,492	$	(68,383)	$	14,109
Customer relationship intangible	7,670		(2,984)		4,686
Total finite-lived intangible assets	$	90,162	$	(71,367)	$	18,795

Schedule of Current Year Amortization Expense for Finite-Lived Intangible Assets

Current year amortization expense for finite-lived intangible assets is presented in the table below.

	Three Months Ended
	March 31,
	2024		2023
Amortization expense for:
Core deposit intangibles	$	914	$	1,092
Customer relationship intangible	298		334
Total intangible amortization	$	1,212	$	1,426

Schedule of Estimated Amortization Expense of Finite-Lived Intangible Assets

The estimated amortization expense of finite-lived intangible assets for the year ending December 31, 2024 and the succeeding four years is summarized as follows:

	Core Deposit Intangibles		Customer Relationship Intangible		Total
2024	$	3,498	$	1,192	$	4,690
2025	3,102		1,048		4,150
2026	2,899		860		3,759
2027	2,774		628		3,402
2028	1,836		483		2,319