Goodwill and Core Deposit Intangibles (Tables)

3 Months Ended

Mar. 31, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Core Deposit Intangibles

Changes in the carrying amount of the Company’s goodwill and core deposit intangibles for the three months ended March 31, 2026, and the year ended December 31, 2025 were as follows:


		Goodwill				Core Deposit Intangibles
		(Dollars in thousands)
Balance as of December 31, 2024		$	3,503,129			$	66,047
Less:
Amortization			—				(14,442	)
Add:
Measurement period adjustment for the acquisition of Lone Star State Bancshares, Inc.			(2	)			—
Balance as of December 31, 2025			3,503,127				51,605
Less:
Amortization			—				(5,259	)
Add:
Acquisition of American Bank Holding Corporation			185,042				31,103
Acquisition of Southwest Bancshares, Inc.			134,114				33,794
Balance as of March 31, 2026		$	3,822,283			$	111,243

Estimated Aggregate Future Amortization Expense for Core Deposit Intangibles

The estimated aggregate future amortization expense for core deposit intangibles remaining as of March 31, 2026, is as follows (dollars in thousands):


Remaining 2026		$	16,953
2027			20,254
2028			17,595
2029			14,233
2030			9,307
Thereafter			32,901
Total		$	111,243