Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Carrying Amount of Goodwill and Other Intangible Assets

The carrying amount of goodwill and other intangible assets as of the dates indicated is summarized below.  

(in thousands)	March 31, 2024		December 31, 2023
Core deposit intangible	$	100,694	$	104,174
Less: accumulated amortization	(40,704)		(40,495)
Net core deposit intangible	59,990		63,679
Customer relationship intangible	8,400		8,400
Less: accumulated amortization	(2,104)		(1,906)
Net customer relationship intangible	6,296		6,494
Total intangibles subject to amortization, net (1)	66,286		70,173
Goodwill	921,253		919,914
Total goodwill and other intangible assets, net	$	987,539	$	990,087

(1) As intangible assets become fully amortized, they are excluded from balances presented.

Schedule of Changes in the Carrying Amounts of Goodwill

The following is a summary of changes in the carrying amounts of goodwill: 

	Three Months Ended March 31,
(in thousands)	2024		2023
Balance, beginning of period (1)	$	919,914	$	751,174
Acquisitions	—		145,544
Measurement period adjustment - First Miami (2)	1,339		—
Balance, end of period (1)	$	921,253	$	896,718

(1) Goodwill balances are shown net of accumulated impairment losses of $306 million incurred prior to 2023.

(2) See Note 4 for further details.

Schedule of Estimated Aggregate Amortization Expense for Future Periods

The estimated aggregate amortization expense for future periods for finite-lived intangibles is as follows:

(in thousands)
Year
Remainder of 2024	$	10,960
2025	12,774
2026	10,896
2027	9,018
2028	7,236
Thereafter	15,402
Total	$	66,286