Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2025

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 nine months ended September 30, 2025 and 2024 are set forth in the table below.

	2025				2024
	Community Banks		Total		Community Banks		Insurance		Total
Balance at January 1	$	988,898	$	988,898	$	988,898	$	2,767	$	991,665
Additions to goodwill from The First merger	422,813		422,813		—		—		—
Sale of the insurance agency	—		—		—		(2,767)		(2,767)
Balance at September 30	$	1,411,711	$	1,411,711	$	988,898	$	—	$	988,898

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
September 30, 2025
Core deposit intangibles	$	242,102	$	(89,733)	$	152,369
Customer relationship intangible	7,670		(4,962)		2,708
Total finite-lived intangible assets	$	249,772	$	(94,695)	$	155,077
December 31, 2024
Core deposit intangibles	$	82,492	$	(71,881)	$	10,611
Customer relationship intangible	7,670		(4,176)		3,494
Total finite-lived intangible assets	$	90,162	$	(76,057)	$	14,105

Schedule of Estimated Amortization Expense of finite-Lived Intangible Assets

Amortization expense for finite-lived intangible assets is presented in the table below.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2025		2024		2025		2024
Amortization expense for:
Core deposit intangibles	$	8,412	$	862	$	17,852	$	2,664
Customer relationship intangible	262		298		786		894
Total intangible amortization	$	8,674	$	1,160	$	18,638	$	3,558

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, 2025 and the succeeding four years is summarized as follows:

	Core Deposit Intangibles		Customer Relationship Intangible		Total
2025	$	26,055	$	1,048	$	27,103
2026	30,732		860		31,592
2027	27,440		628		28,068
2028	23,337		483		23,820
2029	18,335		331		18,666
Thereafter	44,322		144		$	44,466