Goodwill and Other Intangibles (Tables)

9 Months Ended

Sep. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

Changes in the carrying amount of goodwill for the periods ended September 30, 2023 and December 31, 2022 by reportable segment are as follows (in thousands):

	Commercial Banking		Institutional Banking		Personal Banking		Total
Balances as of January 1, 2023	$	63,113	$	76,492	$	67,780	$	207,385
Balances as of September 30, 2023	$	63,113	$	76,492	$	67,780	$	207,385
Balances as of January 1, 2022	$	59,419	$	51,332	$	63,767	$	174,518
Healthcare savings account business acquisition		—		25,160		—		25,160
Branch acquisition		3,694		—		4,013		7,707
Balances as of December 31, 2022	$	63,113	$	76,492	$	67,780	$	207,385

Changes in Intangible Assets

The following table lists the finite-lived intangible assets that continue to be subject to amortization as of September 30, 2023 and December 31, 2022 (in thousands):

	As of September 30, 2023
	Core Deposit Intangible Assets		Customer Relationships		Total
Gross carrying amount	$	14,130	$	115,853	$	129,983
Accumulated amortization		12,776		44,147		56,923
Net carrying amount	$	1,354	$	71,706	$	73,060

	As of December 31, 2022
	Core Deposit Intangible Assets		Customer Relationships		Total
Gross carrying amount	$	16,661	$	114,978	$	131,639
Accumulated amortization		14,827		38,088		52,915
Net carrying amount	$	1,834	$	76,890	$	78,724

Aggregate Amortization Expense Recognized

The following table has the aggregate amortization expense recognized in each period (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Aggregate amortization expense	$	2,124	$	1,092	$	6,539	$	3,388

Estimated Amortization Expense of Intangible Assets

The following table lists estimated amortization expense of intangible assets in future periods (in thousands):

For the three months ending December 31, 2023	$	2,048
For the year ending December 31, 2024		7,694
For the year ending December 31, 2025		7,487
For the year ending December 31, 2026		6,628
For the year ending December 31, 2027		4,655