v3.25.4
Securities (Tables)
 12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of Amortized Cost and Estimated Fair Value of Securities
The amortized cost and estimated fair value of securities at year-end were as follows:
December 31, 2025Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
(Losses)		Allowance
for Credit
Losses		Estimated
Fair
Value
(Dollars in thousands)
Securities available-for-sale:
Agency mortgage-backed securities$281,480 $1,708 $(2,269)$— $280,919 
Collateralized mortgage obligations256,258 723 (251)— 256,730 
U.S. Treasury54,687 622 — — 55,309 
Total$592,425 $3,053 $(2,520)$— $592,958 
December 31, 2025Amortized
Cost		Gross
Unrecognized
Gains		Gross
Unrecognized
(Losses)		Estimated
Fair
Value		Allowance
for Credit
Losses
(Dollars in thousands)
Securities held-to-maturity:
Agency mortgage-backed securities$502,381 $289 $(63,857)$438,813 $— 
Municipals - exempt from Federal tax27,341 1 (388)26,954 (11)
Total$529,722 $290 $(64,245)$465,767 $(11)
December 31, 2024Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
(Losses)		Allowance
for Credit
Losses		Estimated
Fair
Value
(Dollars in thousands)
Securities available-for-sale:
U.S. Treasury$187,095 $— $(912)$— $186,183 
Agency mortgage-backed securities74,239 — (4,148)— 70,091 
Total$261,334 $— $(5,060)$— $256,274 
December 31, 2024Amortized
Cost		Gross
Unrecognized
Gains		Gross
Unrecognized
(Losses)		Estimated
Fair
Value		Allowance
for Credit
Losses
(Dollars in thousands)
Securities held-to-maturity:
Agency mortgage-backed securities$559,548 $— $(91,585)$467,963 $— 
Municipals - exempt from Federal tax30,480 — (1,431)29,049 (12)
Total$590,028 $— $(93,016)$497,012 $(12)
Schedule of Unrealized Losses on Investments
Securities with unrealized losses at year end, for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time that individual securities have been in an unrealized loss position are as follows:
Less Than 12 Months12 Months or MoreTotal
December 31, 2025Fair
Value		Unrealized
(Losses)		Fair
Value		Unrealized
(Losses)		Fair
Value		Unrealized
(Losses)
(Dollars in thousands)
Securities available-for-sale:
Agency mortgage-backed securities$90,437 $(290)$41,717 $(1,979)$132,154 $(2,269)
Collateralized mortgage obligations103,768 (251)— — 103,768 (251)
Total$194,205 $(541)$41,717 $(1,979)$235,922 $(2,520)
Securities held-to-maturity:
Agency mortgage-backed securities$— $— $428,790 $(63,857)$428,790 $(63,857)
Municipals — exempt from Federal tax305 — 19,758 (388)20,063 (388)
Total$305 $— $448,548 $(64,245)$448,853 $(64,245)
Less Than 12 Months12 Months or MoreTotal
December 31, 2024Fair
Value		Unrealized
(Losses)		Fair
Value		Unrealized
(Losses)		Fair
Value		Unrealized
(Losses)
(Dollars in thousands)
Securities available-for-sale:
U.S. Treasury$9,778 $(4)$176,405 $(908)$186,183 $(912)
Agency mortgage-backed securities20,383 (100)49,708 (4,048)70,091 (4,148)
Total$30,161 $(104)$226,113 $(4,956)$256,274 $(5,060)
Securities held-to-maturity:
Agency mortgage-backed securities$10,280 $(53)$456,906 $(91,532)$467,186 $(91,585)
Municipals — exempt from Federal tax4,076 (65)23,733 (1,366)27,809 (1,431)
Total$14,356 $(118)$480,639 $(92,898)$494,995 $(93,016)
Schedule of Amortized Cost and Estimated Fair Values of Securities, by Contractual Maturity
The amortized cost and fair value of debt securities as of December 31, 2025, by contractual maturity, are shown below. The expected maturities will differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.
Available-for-sale
Amortized
Cost		Estimated
Fair Value
(Dollars in thousands)
Due after three months through one year$14,980 $15,063 
Due after one through five years39,707 40,246 
Agency mortgage-backed securities and
     collateralized mortgage obligations537,738 537,649 
    Total$592,425 $592,958 
Held-to-maturity
Amortized
Cost (1)
Estimated
Fair Value
(Dollars in thousands)
Due after three months through one year$690 $686 
Due after one through five years12,666 12,490 
Due after five through ten years13,985 13,778 
Agency mortgage-backed securities502,381 438,813 
Total$529,722 $465,767 
_________________________________________________________
(1)Gross of the allowance for credit losses of ($11,000) at December 31, 2025 and ($12,000) at December 31, 2024.
Schedule of Allowance for Credit Losses on Debt Securities Held-to-maturity The table below presents a roll-forward by major security type for the year ended December 31, 2025 of the allowance for credit losses on debt securities held-to-maturity held at period end:
Municipals
(Dollars in thousands)
Beginning balance January 1, 2025$12 
Provision for (recapture of) credit losses(1)
Ending balance December 31, 2025$11