Investment Securities (Tables)

9 Months Ended

Sep. 30, 2022

Investment Securities [Abstract]

Amortized Cost And Estimated Fair Values Of AFS Investment Securities

	September 30, 2022
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
(in thousands)	Cost		Gains		Losses		Value
State and municipals	$	322,278	$	70	$	(29,075)	$	293,273
Pass-through mortgage securities		179,220		—		(34,162)		145,058
Collateralized mortgage obligations		137,138		—		(20,353)		116,785
Corporate bonds		119,000		—		(9,895)		109,105
	$	757,636	$	70	$	(93,485)	$	664,221
	December 31, 2021
State and municipals	$	315,747	$	11,600	$	(176)	$	327,171
Pass-through mortgage securities		187,494		54		(4,591)		182,957
Collateralized mortgage obligations		109,254		67		(3,239)		106,082
Corporate bonds		119,000		—		(892)		118,108
	$	731,495	$	11,721	$	(8,898)	$	734,318

Securities With A Continuous Unrealized Loss Position

	September 30, 2022
	Less than				12 Months
	12 Months				or More				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(in thousands)	Value		Loss		Value		Loss		Value		Loss
State and municipals	$	256,859	$	(24,416)	$	8,361	$	(4,659)	$	265,220	$	(29,075)
Pass-through mortgage securities		13,731		(1,863)		131,326		(32,299)		145,057		(34,162)
Collateralized mortgage obligations		43,663		(1,338)		73,122		(19,015)		116,785		(20,353)
Corporate bonds		81,000		(7,000)		28,105		(2,895)		109,105		(9,895)
Total temporarily impaired	$	395,253	$	(34,617)	$	240,914	$	(58,868)	$	636,167	$	(93,485)
	December 31, 2021
State and municipals	$	18,429	$	(176)	$	—	$	—	$	18,429	$	(176)
Pass-through mortgage securities		179,575		(4,529)		1,641		(62)		181,216		(4,591)
Collateralized mortgage obligations		99,305		(3,239)		—		—		99,305		(3,239)
Corporate bonds		87,620		(380)		30,488		(512)		118,108		(892)
Total temporarily impaired	$	384,929	$	(8,324)	$	32,129	$	(574)	$	417,058	$	(8,898)

Sales Of Available-For-Sale Securities

	Nine Months Ended				Three Months Ended
	September 30,				September 30,
(in thousands)	2022		2021		2022		2021
Proceeds	$	—	$	54,192	$	—	$	—
Gains	$	—	$	622	$	—	$	—
Losses		—		(16)		—		—
Net gain	$	—	$	606	$	—	$	—

Maturities

(in thousands)	Amortized Cost		Fair Value
Within one year	$	14,996	$	14,905
After 1 through 5 years		86,418		84,054
After 5 through 10 years		209,402		194,397
After 10 years		130,462		109,022
Mortgage-backed securities		316,358		261,843
	$	757,636	$	664,221