Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

Goodwill. Year-end goodwill was as follows:

	2021		2020
Goodwill	$	654,952	$	654,952

Other Intangible Assets. Year-end other intangible assets were as follows:

	Gross Intangible Assets		Accumulated Amortization		Net Intangible Assets
2021
Core deposits	$	9,300	$	(8,582)	$	718
Customer relationships	2,385		(2,237)		148
	$	11,685	$	(10,819)	$	866
2020
Core deposits	$	9,300	$	(8,004)	$	1,296
Customer relationships	2,886		(2,619)		267
	$	12,186	$	(10,623)	$	1,563

Other intangible assets are amortized on an accelerated basis over their estimated lives, which range from 5 to 10 years. Amortization expense related to intangible assets totaled $697 thousand in 2021, $918 thousand in 2020, and $1.2 million in 2019. The estimated aggregate future amortization expense for intangible assets remaining as of December 31, 2021 is as follows:

2022	$	481
2023	282
2024	87
2025	11
2026	5
Thereafter	—
	$	866