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Investment Securities
 9 Months Ended
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Investment Securities Investment Securities
Debt securities AFS as of the balance sheet dates consisted of the following:
September 30, 2025Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
 (Dollars in thousands)
U.S. Government-sponsored enterprises$28,242 $— $(2,375)$25,867 
Agency mortgage-backed209,906 253 (25,152)185,007 
State and political subdivisions55,511 12 (7,979)47,544 
Corporate2,000 — (14)1,986 
Total$295,659 $265 $(35,520)$260,404 
December 31, 2024Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
 (Dollars in thousands)
U.S. Government-sponsored enterprises$29,664 $— $(3,449)$26,215 
Agency mortgage-backed206,170 — (32,895)173,275 
State and political subdivisions55,737 14 (7,201)48,550 
Corporate2,500 2 (38)2,464 
Total$294,071 $16 $(43,583)$250,504 
There were no investment securities HTM at September 30, 2025 or December 31, 2024. At such dates, investment securities AFS with a fair value of $90.2 million and $96.0 million, respectively, were pledged as collateral for FHLB borrowings and other credit subject to collateralization, public unit deposits or for other purposes as required or permitted by law. Investment securities AFS pledged as collateral for discount window borrowings at the FRB consisted of U.S. government-sponsored enterprises and Agency MBS with a fair value of $9.4 million and $9.7 million at September 30, 2025 and December 31, 2024, respectively.

The amortized cost and estimated fair value of debt securities by contractual scheduled maturity as of September 30, 2025 were as follows:
Amortized
Cost		Fair
Value
Available-for-sale(Dollars in thousands)
Due in one year or less$1,016 $1,010 
Due from one to five years13,804 13,017 
Due from five to ten years11,497 10,530 
Due after ten years59,436 50,840 
 85,753 75,397 
Agency mortgage-backed209,906 185,007 
Total debt securities available-for-sale$295,659 $260,404 

Actual maturities may differ for certain debt securities that may be called by the issuer prior to the contractual maturity. Actual maturities usually differ from contractual maturities on agency MBS because the mortgages underlying the securities may be prepaid, usually without any penalties. Therefore, these agency MBS are shown separately and are not included in the contractual maturity categories in the above maturity summary.

Information pertaining to all AFS debt securities with gross unrealized losses for which an ACL has not been recorded as of the balance sheet dates, aggregated by investment category and length of time that individual securities have been in a continuous loss position were as follows:
September 30, 2025Less Than 12 Months12 Months and overTotal
 Number
of
Securities		Fair
Value		Gross
Unrealized
Losses		Number
of
Securities		Fair
Value		Gross
Unrealized
Losses		Number
of
Securities		Fair
Value		Gross
Unrealized
Losses
(Dollars in thousands)
U.S. Government-
  sponsored enterprises		1 $46 $— 25 $25,821 $(2,375)26 $25,867 $(2,375)
Agency mortgage-backed5 16,800 (272)94 148,456 (24,880)99 165,256 (25,152)
State and political
  subdivisions		1 1,571 (1)52 45,461 (7,978)53 47,032 (7,979)
Corporate1 500 — 3 1,486 (14)4 1,986 (14)
Total8 $18,917 $(273)174 $221,224 $(35,247)182 $240,141 $(35,520)
December 31, 2024Less Than 12 Months12 Months and overTotal
 Number
of
Securities		Fair
Value		Gross
Unrealized
Losses		Number
of
Securities		Fair
Value		Gross
Unrealized
Losses		Number
of
Securities		Fair
Value		Gross
Unrealized
Losses
(Dollars in thousands)
U.S. Government-
  sponsored enterprises		1 $2,012 $(69)26 $24,203 $(3,380)27 $26,215 $(3,449)
Agency mortgage-backed11 43,367 (784)87 129,908 (32,111)98 173,275 (32,895)
State and political
  subdivisions		1 1,564 (8)52 46,470 (7,193)53 48,034 (7,201)
Corporate1 499 (1)3 1,463 (37)4 1,962 (38)
Total14 $47,442 $(862)168 $202,044 $(42,721)182 $249,486 $(43,583)

AFS debt securities in unrealized loss positions are evaluated for impairment related to credit losses at least quarterly. For AFS debt securities in an unrealized loss position, management first assesses whether it intends to sell, or it is more likely than not that the Company will be required to sell, the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through earnings. For AFS debt securities that do not meet the above criteria, management evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security and the issuer, among other factors. If this assessment indicates that a credit loss exists, management compares the present value of cash flows expected to be collected from the security with the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis for the security, a credit loss exists and an ACL is recorded, limited to the amount that the fair value of the security is less than its amortized cost basis. For AFS debt securities, any decline in fair value that has not been recorded through an ACL is recognized in other comprehensive income (loss), net of applicable taxes.

No ACL for AFS debt securities was recorded at September 30, 2025 or December 31, 2024. Accrued interest receivable on AFS debt securities totaled $884 thousand and $1.2 million at September 30, 2025 and December 31, 2024, respectively, and is excluded from the estimate of credit losses.

The following table presents the proceeds resulting in gross realized gains and gross realized losses from the sale of AFS debt securities for the three and nine months ended September 30, 2025 and 2024:
For The Three Months Ended September 30,For the Nine Months Ended September 30,
2025202420252024
(Dollars in thousands)
Proceeds from sales$— $37,218 $— $37,218 
Gross gains— 218 — 218 
Gross losses— (1,511)— (1,511)
Net losses on sales of investment securities AFS
$— $(1,293)$— $(1,293)

The Company completed a balance sheet repositioning related to its investment securities portfolio during the three months ended September 30, 2024. The sale of lower-yielding AFS debt securities with a book value of $38.5 million was executed and recorded in August of 2024. The proceeds from the sale of these securities were used to purchase $26.0 million of AFS debt securities at higher yields to improve income going forward, and the remainder was used to fund loan growth.