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Fair Value (Tables)

9 Months Ended

Sep. 30, 2025

Fair Value Disclosures [Abstract]

Fair Value Assets and Liabilities Measured on Recurring Basis

The following tables present fair values for assets and liabilities measured at fair value on a recurring basis:


		As of September 30, 2025
		Level 1				Level 2				Level 3				Total
		(Dollars in thousands)
Assets:
Available for sale securities:
Corporate debt securities		$	—			$	9,660			$	—			$	9,660
Collateralized mortgage obligations			—				217,189				—				217,189
Mortgage-backed securities			—				105,520				—				105,520
Derivative financial instruments:
Interest rate lock commitments		$	—			$	199			$	—			$	199
Forward mortgage-backed securities trades			—				51				—				51
Loan customer counterparty			—				—				—				—
Financial institution counterparty			—				926				—				926
Liabilities:
Derivative financial instruments:
Interest rate lock commitments		$	—			$	—			$	—			$	—
Forward mortgage-backed securities trades			—				56				—				56
Loan customer counterparty			—				930				—				930
Financial institution counterparty			—				—				—				—


		As of December 31, 2024
		Level 1				Level 2				Level 3				Total
		(Dollars in thousands)
Assets:
Available for sale securities:
Corporate debt securities		$	—			$	16,325			$	—			$	16,325
Collateralized mortgage obligations			—				212,990				—				212,990
Mortgage-backed securities			—				107,645				—				107,645
Derivative financial instruments:
Interest rate lock commitments		$	—			$	144			$	—			$	144
Forward mortgage-backed securities trades			—				75				—				75
Loan customer counterparty			—				—				—				—
Financial institution counterparty			—				686				—				686
Liabilities:
Derivative financial instruments:
Interest rate lock commitments		$	—			$	1			$	—			$	1
Forward mortgage-backed securities trades			—				37				—				37
Loan customer counterparty			—				693				—				693
Financial institution counterparty			—				—				—				—

Summary of Carrying and Fair Value Information of Financial Instruments

The following tables present carrying and fair value information of financial instruments as of the dates indicated:


		As of September 30, 2025
		Carrying				Estimated Fair Value
		Amount				Level 1				Level 2				Level 3				Total
		(Dollars in thousands)
Assets
Cash and due from banks		$	1,766,115			$	1,766,115			$	—			$	—			$	1,766,115
Federal funds sold			210				210				—				—				210
Held to maturity securities			9,900,093				—				8,981,672				—				8,981,672
Loans held for sale			11,297				—				11,297				—				11,297
Loans held for investment, net of allowance			20,398,668				—				—				19,388,969				19,388,969
Loans held for investment - Warehouse Purchase Program			1,278,178				—				1,278,178				—				1,278,178
Other real estate owned			13,750				—				13,750				—				13,750
Liabilities
Deposits:
Noninterest-bearing		$	9,522,028			$	—			$	9,522,028			$	—			$	9,522,028
Interest-bearing			18,260,066				—				18,243,056				—				18,243,056
Other borrowings			2,400,000				—				2,400,000				—				2,400,000
Securities sold under repurchase agreements			185,797				—				185,796				—				185,796


		As of December 31, 2024
		Carrying				Estimated Fair Value
		Amount				Level 1				Level 2				Level 3				Total
		(Dollars in thousands)
Assets
Cash and due from banks		$	1,972,175			$	1,972,175			$	—			$	—			$	1,972,175
Federal funds sold			292				292				—				—				292
Held to maturity securities			10,757,464				—				9,382,479				—				9,382,479
Loans held for sale			10,690				—				10,690				—				10,690
Loans held for investment, net of allowance			20,705,811				—				—				19,379,556				19,379,556
Loans held for investment - Warehouse Purchase Program			1,080,903				—				1,080,903				—				1,080,903
Other real estate owned			5,701				—				5,701				—				5,701
Liabilities
Deposits:
Noninterest-bearing		$	9,798,438			$	—			$	9,798,438			$	—			$	9,798,438
Interest-bearing			18,582,900				—				18,559,227				—				18,559,227
Other borrowings			3,200,000				—				3,200,000				—				3,200,000
Securities sold under repurchase agreements			221,913				—				221,902				—				221,902