Investment Securities (Tables)

12 Months Ended

Dec. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Amortized Cost and Estimated Fair Value of Held to Maturity Securities and Available for Sale Securities by Contractual Maturity

The following tables show the amortized cost, the estimated fair value and the allowance for credit losses of the held-to-maturity securities and available-for-sale securities at December 31, 2022 and 2021, by contractual maturity within each type:


	At December 31, 2022
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for Credit Losses		Fair Value
Securities Held-to-Maturity





Residential mortgage-backed securities:
After 1 year to 5 years	$	1,654	$	—	$	(70)	$	—	$	1,584
After 5 years to 10 years	6,076		—		(342)		—		5,734
Over 10 years	146,997		—		(20,247)		—		126,750
	154,727		—		(20,659)		—		134,068




Total	$	154,727	$	—	$	(20,659)	$	—	$	134,068
Securities Available-for-Sale










State and political subdivisions:

After 1 year to 5 years	$	2,327	$	—	$	(42)	$	—	$	2,285


	2,327		—		(42)		—		2,285
Residential mortgage-backed securities:

After 1 year to 5 years	864		—		(37)		—		827
After 5 years to 10 years	10,399		—		(815)		—		9,584
Over 10 years	294,261		7		(41,291)		—		252,977
	305,524		7		(42,143)		—		263,388
Collateralized mortgage obligations:

After 5 years to 10 years	324		—		(22)		—		302
Over 10 years	2,257		—		(237)		—		2,020
	2,581		—		(259)		—		2,322
Corporate bonds:
Within 1 year	1,000		—		—		—		1,000
After 1 year to 5 years	30,679		3		(1,516)		(152)		29,014
After 5 years to 10 years	60,000		—		(6,765)		(988)		52,247

	91,679		3		(8,281)		(1,140)		82,261
Total	$	402,111	$	10	$	(50,725)	$	(1,140)	$	350,256


	At December 31, 2021
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Allowance for Credit Losses		Fair Value
Securities Held-to-Maturity
U.S. government corporations and agencies:
Within 1 year	$	6,999	$	34	$	—	$	—	$	7,033


	6,999		34		—		—		7,033
Residential mortgage-backed securities:
After 5 years to 10 years	5,208		194		—		—		5,402
Over 10 years	164,776		2,175		(984)		—		165,967
	169,984		2,369		(984)		—		171,369




Total	$	176,983	$	2,403	$	(984)	$	—	$	178,402
Securities Available-for-Sale









State and political subdivisions:

After 1 year to 5 years	$	2,326	$	7	$	—	$	—	$	2,333


	2,326		7		—		—		2,333
Residential mortgage-backed securities:
Within 1 year	31		—		—		—		31
After 1 year to 5 years	153		5		—		—		158
After 5 years to 10 years	2,286		82		—		—		2,368
Over 10 years	220,153		671		(2,276)		—		218,548
	222,623		758		(2,276)		—		221,105
Collateralized mortgage obligations:

After 5 years to 10 years	481		7		—		—		488
Over 10 years	2,813		—		(23)		—		2,790
	3,294		7		(23)		—		3,278
Corporate bonds:
Within 1 year	2,500		4		—		—		2,504
After 1 year to 5 years	28,731		755		(67)		(51)		29,368
After 5 years to 10 years	60,000		—		(703)		(878)		58,419

	91,231		759		(770)		(929)		90,291
Total	$	319,474	$	1,531	$	(3,069)	$	(929)	$	317,007

The following table presents information related to sales of securities available-for-sale during the years ended December 31, 2022, 2021 and 2020:


	For the Years Ended December 31,
(Dollars in thousands)	2022		2021		2020
Securities available-for-sale:
Proceeds from sales	$	1,530	$	4,636	$	66,421
Gross realized gains on sales	30		145		885
Gross realized losses on sales	—		—		14
Tax expense related to net realized gains on sales	6		30		183

Schedule of Securities in Unrealized Loss Position

The following table shows the fair value of securities that were in an unrealized loss position for which an allowance for credit losses has not been recorded at December 31, 2022 and 2021, by the length of time those securities were in a continuous loss position.


	Less than Twelve Months				Twelve Months or Longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
At December 31, 2022
Securities Held-to-Maturity

Residential mortgage-backed securities	$	65,044	$	(5,894)	$	69,024	$	(14,765)	$	134,068	$	(20,659)

Total	$	65,044	$	(5,894)	$	69,024	$	(14,765)	$	134,068	$	(20,659)
Securities Available-for-Sale


State and political subdivisions	$	1,255	$	(42)	$	—	$	—	$	1,255	$	(42)
Residential mortgage-backed securities	128,831		(13,843)		133,902		(28,300)		262,733		(42,143)
Collateralized mortgage obligations	302		(22)		2,020		(237)		2,322		(259)
Corporate bonds	500		(1)		—		—		500		(1)
Total	$	130,888	$	(13,908)	$	135,922	$	(28,537)	$	266,810	$	(42,445)

At December 31, 2021
Securities Held-to-Maturity

Residential mortgage-backed securities	$	89,837	$	(984)	$	—	$	—	$	89,837	$	(984)

Total	$	89,837	$	(984)	$	—	$	—	$	89,837	$	(984)
Securities Available-for-Sale



Residential mortgage-backed securities	$	164,326	$	(1,816)	$	12,097	$	(460)	$	176,423	$	(2,276)
Collateralized mortgage obligations	2,790		(23)		—		—		2,790		(23)
Corporate bonds	779		(1)		—		—		779		(1)
Total	$	167,895	$	(1,840)	$	12,097	$	(460)	$	179,992	$	(2,300)

Available-for-sale Securities, Allowance for Credit Loss Rollforward

The table below presents a rollforward by major security type for the years ended December 31, 2022 and 2021 of the allowance for credit losses on securities available-for-sale.


(Dollars in thousands)	Corporate Bonds
For the Year Ended December 31, 2022
Securities Available-for-Sale
Beginning balance	$	(929)
Additions for securities for which no previous expected credit losses were recognized	(153)
Change in securities for which a previous expected credit loss was recognized	(58)
Ending balance	$	(1,140)

For the Year Ended December 31, 2021
Securities Available-for-Sale
Beginning balance	$	(869)
Additions for securities for which no previous expected credit losses were recognized	(44)
Change in securities for which a previous expected credit loss was recognized	(16)
Ending balance	$	(929)