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Investment Securities (Tables)

9 Months Ended

Sep. 30, 2025

Investments, Debt and Equity Securities [Abstract]

Amortized Cost, Estimated Fair Value and Allowance for Credit Losses of HTM Securities and AFS Securities by Contractual Maturities

The following table shows 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 September 30, 2025 and December 31, 2024, by contractual maturity within each type:

			At September 30, 2025
(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			$	649					$	—					$	(8)					$	—					$	641
After 5 years to 10 years			11,337						—						(304)						—						11,033
Over 10 years			114,054						12						(13,836)						—						100,230
			126,040						12						(14,148)						—						111,904
Total			$	126,040					$	12					$	(14,148)					$	—					$	111,904
Securities Available-for-Sale
Residential mortgage-backed securities:
Within 1 year			$	1											$	—					$	—					$	1
After 1 year to 5 years			166												(2)						—						164
After 5 years to 10 years			9,547												(455)						—						9,092
Over 10 years			310,460						1,167						(27,680)						—						283,947
			320,174						1,167						(28,137)						—						293,204
Collateralized mortgage obligations:
After 1 year to 5 years			89						—						(1)						—						88
Over 10 years			1,447						—						(86)						—						1,361
			1,536						—						(87)						—						1,449
Corporate bonds:
Within 1 year			7,475						3						(70)						(10)						7,398
After 1 year to 5 years			69,359						112						(3,621)						(7)						65,843
After 5 years to 10 years			500						—						—						(1)						499
			77,334						115						(3,691)						(18)						73,740
Total			$	399,044					$	1,282					$	(31,915)					$	(18)					$	368,393

			At December 31, 2024
(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			$	1,114					$	—					$	(24)					$	—					$	1,090
After 5 years to 10 years			10,208						—						(450)						—						9,758
Over 10 years			122,789						—						(18,630)						—						104,159
			134,111						—						(19,104)						—						115,007
Total			$	134,111					$	—					$	(19,104)					$	—					$	115,007
Securities Available-for-Sale
State and political subdivisions:
Within 1 year			$	1,300					$	—					$	(5)					$	—					$	1,295
			1,300						—						(5)						—						1,295
Residential mortgage-backed securities:
Within 1 year			20						—						—						—						20
After 1 year to 5 years			298						—						(6)						—						292
After 5 years to 10 years			11,260						—						(791)						—						10,469
Over 10 years			311,126						119						(38,645)						—						272,600
			322,704						119						(39,442)						—						283,381
Collateralized mortgage obligations:
After 1 year to 5 years			155						—						(4)						—						151
Over 10 years			1,663						—						(129)						—						1,534
			1,818						—						(133)						—						1,685
Corporate bonds:
Within 1 year			5,905						5						(58)						(6)						5,846
After 1 year to 5 years			10,924						16						(303)						(31)						10,606
After 5 years to 10 years			60,000						—						(4,650)						(802)						54,548
			76,829						21						(5,011)						(839)						71,000
Total			$	402,651					$	140					$	(44,591)					$	(839)					$	357,361

Information Related to Sales of Securities Available-for-Sale

The following table presents information related to sales of securities available-for-sale during the nine months ended September 30, 2025 and 2024.

			Nine Months Ended September 30,
(Dollars in thousands)			2025						2024
Securities available-for-sale:
Proceeds from sales			$	—					$	505
Gross realized gains on sales			—						18
Tax expense related to net realized gains on sales			—						4

Unrealized Gain (Loss) on Investments

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 September 30, 2025 and December 31, 2024, 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 September 30, 2025
Securities Held-to-Maturity
Residential mortgage-backed securities			$	1,303					$	(4)					$	106,777					$	(14,144)					$	108,080					$	(14,148)
Total			$	1,303					$	(4)					$	106,777					$	(14,144)					$	108,080					$	(14,148)
Securities Available-for-Sale
Residential mortgage-backed securities			$	5,009					$	(20)					$	206,193					$	(28,117)					$	211,202					$	(28,137)
Collateralized mortgage obligations			—						—						1,449						(87)						1,449						(87)
Corporate bonds			501						—						56,921						(3,573)						57,422						(3,573)
Total			$	5,510					$	(20)					$	264,563					$	(31,777)					$	270,073					$	(31,797)
At December 31, 2024
Securities Held-to-Maturity
Residential mortgage-backed securities			$	2,566					$	(50)					$	112,441					$	(19,054)					$	115,007					$	(19,104)
Total			$	2,566					$	(50)					$	112,441					$	(19,054)					$	115,007					$	(19,104)
Securities Available-for-Sale
Residential mortgage-backed securities			$	65,044					$	(905)					$	205,071					$	(38,537)					$	270,115					$	(39,442)
Collateralized mortgage obligations			—						—						1,685						(133)						1,685						(133)
Total			$	65,044					$	(905)					$	206,756					$	(38,670)					$	271,800					$	(39,575)

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

The table below presents a roll forward by major security type for the nine months ended September 30, 2025 and September 30, 2024 of the allowance for credit losses on securities available-for-sale.

(Dollars in thousands)			Corporate Bonds
Nine months ended September 30, 2025
Securities Available-for-Sale
Beginning balance			$	(839)
Additions for securities for which no previous expected credit losses were recognized			802
Change in securities for which a previous expected credit loss was recognized			19
Ending balance			$	(18)
Nine months ended September 30, 2024
Securities Available-for-Sale
Beginning balance			$	(731)
Change in securities for which a previous expected credit loss was recognized			89
Ending balance			$	(642)

Gain (Loss) on Securities

The following is a summary of unrealized and realized gains and losses on equity securities recognized in other noninterest income in the condensed consolidated statements of income during the nine months ended September 30, 2025 and 2024.

			Nine Months Ended September 30,
(Dollars in thousands)			2025						2024
Equity Securities:
Net gains recognized during the period			—						68
Less: Net gains recognized during the period on equity securities sold during the period			—						68
Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date			—						—

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Tabular disclosure of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479106/326-30-50-9

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(9)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(7)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-9

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