Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

(In Thousands)

Changes in the carrying amount of goodwill during the years ended December 31, 2021 were as follows:


	Community Banks		Insurance		Total
Balance at December 31, 2019	$	936,916	$	2,767	$	939,683

Additions to goodwill and other adjustments	—		—		—
Balance at December 31, 2020	$	936,916	$	2,767	$	939,683

Additions to goodwill and other adjustments	—		—		—
Balance at December 31, 2021	$	936,916	$	2,767	$	939,683

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


	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
December 31, 2021
Core deposit intangible	$	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
December 31, 2020
Core deposit intangible	$	82,492	$	(53,539)	$	28,953
Customer relationship intangible	2,470		(1,284)		1,186
Total finite-lived intangible assets	$	84,962	$	(54,823)	$	30,139

Core deposit intangible amortization expense for the years ended December 31, 2021, 2020 and 2019 was $5,861, $6,940 and $7,965, respectively. Customer relationship intangible amortization expense for the year ended December 31, 2021, 2020 and 2019 was $181, $181 and $140, respectively.

The estimated amortization expense of finite-lived intangible assets for the five succeeding fiscal years is summarized as follows:


	Core Deposit Intangible		Customer Relationship Intangible		Total
2022	$	4,940	$	181	$	5,121
2023	4,042		181		4,223
2024	3,498		181		3,679
2025	3,102		181		3,283
2026	2,899		138		3,037