Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Carrying amounts of goodwill by operating segments

The carrying amounts of goodwill by operating segments for the nine months ended September 30, 2022 were as follows:

	Community Banks		Insurance		Total
Balance at January 1, 2022	$	936,916	$	2,767	$	939,683
Additions to goodwill from the Southeastern Commercial Finance, LLC acquisition	6,608		—		6,608
Balance at September 30, 2022	$	943,524	$	2,767	$	946,291

Summary 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, 2022
Core deposit intangibles	$	82,492	$	(63,190)	$	19,302
Customer relationship intangible	2,470		(1,602)		868
Total finite-lived intangible assets	$	84,962	$	(64,792)	$	20,170
December 31, 2021
Core deposit intangibles	$	82,492	$	(59,399)	$	23,093
Customer relationship intangible	2,470		(1,465)		1,005
Total finite-lived intangible assets	$	84,962	$	(60,864)	$	24,098

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				Nine Months Ended
	September 30,				September 30,
	2022		2021		2022		2021
Amortization expense for:
Core deposit intangibles	$	1,206	$	1,436	$	3,791	$	4,482
Customer relationship intangible	45		45		136		136
Total intangible amortization	$	1,251	$	1,481	$	3,927	$	4,618

Estimated amortization expense of finite-lived intangible assets

The estimated amortization expense of finite-lived intangible assets for the year ending December 31, 2022 and the succeeding four years is summarized as follows:

	Core Deposit Intangibles		Customer Relationship Intangible		Total
2022	$	4,941	$	181	$	5,122
2023	4,044		181		4,225
2024	3,498		181		3,679
2025	3,102		181		3,283
2026	2,899		138		3,037