Investment Securities (Tables)

3 Months Ended

Mar. 31, 2022

Investment Securities [Abstract]

Amortized Cost And Estimated Fair Values Of AFS Investment Securities

	March 31, 2022
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
(in thousands)	Cost		Gains		Losses		Value
State and municipals	$	313,076	$	2,389	$	(6,608)	$	308,857
Pass-through mortgage securities		185,139		13		(16,878)		168,274
Collateralized mortgage obligations		104,502		1		(9,817)		94,686
Corporate bonds		119,000		—		(7,833)		111,167
	$	721,717	$	2,403	$	(41,136)	$	682,984
	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

	March 31, 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	$	95,119	$	(5,579)	$	3,125	$	(1,029)	$	98,244	$	(6,608)
Pass-through mortgage securities		46,412		(3,064)		120,764		(13,814)		167,176		(16,878)
Collateralized mortgage obligations		31,315		(3,033)		60,940		(6,784)		92,255		(9,817)
Corporate bonds		82,480		(5,520)		28,687		(2,313)		111,167		(7,833)
Total temporarily impaired	$	255,326	$	(17,196)	$	213,516	$	(23,940)	$	468,842	$	(41,136)
	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

	Three Months Ended
	March 31,
(in thousands)	2022		2021
Proceeds	$	—	$	54,192
Gains	$	—	$	622
Losses		—		(16)
Net gain	$	—	$	606

Maturities

(in thousands)	Amortized Cost		Fair Value
Within one year	$	8,161	$	8,179
After 1 through 5 years		89,105		89,486
After 5 through 10 years		211,006		203,407
After 10 years		123,804		118,952
Mortgage-backed securities		289,641		262,960
	$	721,717	$	682,984