Goodwill and Acquired Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2025

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)	2025		2024		2023
Beginning of year	$	732,417	$	732,417	$	480,319
Changes from business combinations	302,318		—		252,098
Total	$	1,034,735	$	732,417	$	732,417

Schedule of Core Deposit Intangibles

The change in balance for CDI is as follows:

	For the Year Ended December 31,
(In thousands)	2025		2024		2023
Beginning of year	$	68,074	$	91,702	$	71,285
Acquired CDI, including measurement period adjustments	122,706		—		49,143
Amortization expense	(26,563)		(23,628)		(28,726)
End of year	$	164,217	$	68,074	$	91,702

Schedule of Gross Carrying Amount and Accumulated Amortization of Intangible Asset

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

	December 31, 2025				December 31, 2024
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
CDI	$	243,444	$	(79,227)	$	125,720	$	(57,646)

Schedule of Estimated Annual Amortization Expense

As of December 31, 2025, estimated annual amortization expense for the Company's CDI in future periods was as follows:

(In thousands)	Amount
2026	$	38,634
2027	32,861
2028	26,686
2029	21,097
2030	15,582
Thereafter	29,357
Total	$	164,217

Schedule of Changes in Mortgage Servicing Rights

Changes in the Company's MSRs measured at fair value, acquired through the acquisition of VBI, were as follows for the year ended December 31, 2025:

	For the Year Ended December 31,
(In thousands)	2025
Carrying value at beginning of period	$	—
Acquired	28,065
Originated servicing rights capitalized upon sale of loan	463
Change in fair value:
Due to payoffs/paydowns	(555)
Due to change in valuation inputs or assumptions	88
Carrying value at end of period	$	28,061

Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets

Data and key economic assumptions, as well as the valuation's sensitivity to interest rate fluctuations, related to the Company’s MSRs as of December 31, 2025 were as follows:

	December 31,
(In thousands)	2025
Unpaid principal balance	$	2,540,798
Prepayment rate assumptions:
Weighted-average	12.74		%
Estimated impact on fair value of a 10% increase	$	(1,373)
Estimated impact on fair value of a 20% increase	(2,639)
Option-adjusted spread:
Weighted-average	5.50		%
Estimated impact on fair value of a 100 basis point increase	$	(1,163)
Estimated impact on fair value of a 200 basis point increase	(2,232)
Weighted-average coupon interest rate	4.78		%
Weighted-average servicing fee	0.25
Weighted-average remaining maturity (in months)	348