Goodwill and Acquired Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table presents changes in the carrying amount of goodwill:

	For the Year Ended December 31,
(In thousands)	2023		2022		2021
Beginning of year	$	480,319	$	252,154	$	221,176
Changes from business combinations	252,098		228,165		30,978
Total	$	732,417	$	480,319	$	252,154

Schedule of Core Deposit Intangibles

The change in balance for CDI is as follows:

	For the Year Ended December 31,
(In thousands)	2023		2022		2021
Beginning of year	$	71,285	$	12,998	$	14,577
Acquired CDI, including measurement period adjustments	49,143		67,388		3,454
Amortization expense	(28,726)		(9,101)		(5,033)
End of year	$	91,702	$	71,285	$	12,998

Gross Carrying Amount and Accumulated Amortization of Intangible Asset

The gross carrying amount and accumulated amortization of the Company's CDI subject to amortization as of:

	December 31, 2023				December 31, 2022
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Core deposit intangible	$	135,212	$	(43,511)	$	97,778	$	(26,493)