Fair Value (Tables)

12 Months Ended

Dec. 31, 2023

Fair Value

Schedule of financial assets and liabilities measured on a recurring basis

			Fair Value Measurements Using
					Significant
			Quoted Prices in		Other		Significant
			Active Markets for		Observable		Unobservable
			Identical Assets		Inputs		Inputs
	Balance		(Level 1)		(Level 2)		(Level 3)
	(Dollars in thousands)
Assets at December 31, 2023
Available-for-sale securities:
U.S. Treasury	$	382,369	$	382,369	$	—	$	—
Agency mortgage-backed securities		60,267		—		60,267		—
I/O strip receivables		117		—		117		—
Assets at December 31, 2022
Available-for-sale securities:
U.S. Treasury	$	418,474	$	418,474	$	—	$	—
Agency mortgage-backed securities		71,122		—		71,122		—
I/O strip receivables		152		—		152		—

Schedule of carrying amounts and estimated fair values of financial instruments

The carrying amounts and estimated fair values of financial instruments at December 31, 2023 are as follows:

				Estimated Fair Value
						Significant
				Quoted Prices in		Other		Significant
				Active Markets for		Observable		Unobservable
	Carrying			Identical Assets		Inputs		Inputs
	Amounts			(Level 1)		(Level 2)		(Level 3)		Total
	(Dollars in thousands)
Assets:
Cash and cash equivalents	$	408,129		$	408,129	$	—	$	—	$	408,129
Securities available-for-sale		442,636			382,369		60,267		—		442,636
Securities held-to-maturity		650,565			—		564,127		—		564,127
Loans (including loans held-for-sale)		3,352,583	(1)		—		2,205		3,172,512		3,174,717
FHLB stock, FRB stock, and other
investments		32,540			—		—		—		N/A
Accrued interest receivable		14,959			1,255		1,764		11,940		14,959
I/O strips receivables		117			—		117		—		117
Liabilities:
Time deposits	$	469,472		$	—	$	471,693	$	—	$	471,693
Other deposits		3,908,986			—		3,908,986		—		3,908,986
Subordinated debt		39,502			—		31,902		—		31,902
Accrued interest payable		4,688			—		4,688		—		4,688

(1) Before allowance for credit losses on loans of $47,958,000.

The carrying amounts and estimated fair values of financial instruments at December 31, 2022 are as follows:

				Estimated Fair Value
						Significant
				Quoted Prices in		Other		Significant
				Active Markets for		Observable		Unobservable
	Carrying			Identical Assets		Inputs		Inputs
	Amounts			(Level 1)		(Level 2)		(Level 3)		Total
	(Dollars in thousands)
Assets:
Cash and cash equivalents	$	306,603		$	306,603	$	—	$	—	$	306,603
Securities available-for-sale		489,596			418,474		71,122		—		489,596
Securities held-to-maturity		714,990			—		614,452		—		614,452
Loans (including loans held-for-sale)		3,301,006	(1)		—		2,456		3,080,485		3,082,941
FHLB stock, FRB stock, and other
investments		32,522			—		—		—		N/A
Accrued interest receivable		15,047			1,328		1,836		11,883		15,047
I/O strips receivables		152			—		152		—		152
Liabilities:
Time deposits	$	143,958		$	—	$	144,702	$	—	$	144,702
Other deposits		4,245,646			—		4,245,646		—		4,245,646
Subordinated debt		39,350			—		36,025		—		36,025
Accrued interest payable		600			—		600		—		600

(1) Before allowance for credit losses on loans of $47,512,000.