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INVESTMENT SECURITIES
 9 Months Ended
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
INVESTMENT SECURITIES
NOTE 2 – INVESTMENT SECURITIES

The amortized cost and estimated fair value of securities available-for-sale along with allowance for credit losses, gross unrealized gains and losses are summarized as follows:

(dollars in thousands)
Securities available-for-sale
Amortized
Cost		Allowance for Credit LossesGross
Unrealized
Gains		Gross
Unrealized
Losses		Estimated
Fair
Value
September 30, 2025
U.S. Treasuries$677,981 $— $7,471 $(562)$684,890 
State, county and municipal securities21,998 — 4 (541)21,461 
Corporate debt securities10,945 (74)5 (465)10,411 
SBA pool securities13,603 — — (691)12,912 
Mortgage-backed securities1,397,223 — 18,442 (13,668)1,401,997 
Total debt securities available-for-sale$2,121,750 $(74)$25,922 $(15,927)$2,131,671 
December 31, 2024
U.S. Treasuries$800,860 $— $669 $(5,065)$796,464 
U.S. government-sponsored agencies1,010 — — (16)994 
State, county and municipal securities25,802 — 8 (1,070)24,740 
Corporate debt securities10,946 (69)— (594)10,283 
SBA pool securities72,036 — — (1,554)70,482 
Mortgage-backed securities797,542 — 1,494 (30,739)768,297 
Total debt securities available-for-sale$1,708,196 $(69)$2,171 $(39,038)$1,671,260 

The amortized cost and estimated fair value of securities held-to-maturity along with gross unrealized gains and losses are summarized as follows:

(dollars in thousands)
Securities held-to-maturity
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Estimated
Fair
Value
September 30, 2025
State, county and municipal securities$33,483 $— $(5,132)$28,351 
Mortgage-backed securities169,098 444 (10,281)159,261 
Total debt securities held-to-maturity$202,581 $444 $(15,413)$187,612 
December 31, 2024
State, county and municipal securities$33,623 $— $(6,214)$27,409 
Mortgage-backed securities131,054 80 (14,515)116,619 
Total debt securities held-to-maturity$164,677 $80 $(20,729)$144,028 

The amortized cost and estimated fair value of debt securities available-for-sale and held-to-maturity as of September 30, 2025, by contractual maturity are shown below. Maturities may differ from contractual maturities in mortgage-backed securities because the mortgages underlying these securities may be called or repaid without penalty. Therefore, these securities are not included in the maturity categories in the following maturity summary:

Available-for-SaleHeld-to-Maturity
(dollars in thousands)
Amortized
Cost		Estimated Fair ValueAmortized
Cost		Estimated Fair Value
Due in one year or less$250,648 $251,350 $— $— 
Due from one year to five years403,206 407,836 — — 
Due from five to ten years67,608 67,897 — — 
Due after ten years3,065 2,591 33,483 28,351 
Mortgage-backed securities1,397,223 1,401,997 169,098 159,261 
 $2,121,750 $2,131,671 $202,581 $187,612 

Securities with a carrying value of approximately $484.3 million and $449.2 million at September 30, 2025 and December 31, 2024, respectively, serve as collateral to secure public deposits and for other purposes required or permitted by law.
The following table shows the gross unrealized losses and estimated fair value of available-for-sale securities aggregated by category and length of time that securities have been in a continuous unrealized loss position at September 30, 2025 and December 31, 2024:

 Less Than 12 Months12 Months or MoreTotal
(dollars in thousands)
Securities available-for-sale
Estimated
Fair
Value		Unrealized
Losses		Estimated
Fair
Value		Unrealized
Losses		Estimated
Fair
Value		Unrealized
Losses
September 30, 2025      
U.S. Treasuries$— $— $56,396 $(562)$56,396 $(562)
State, county and municipal securities— — 14,920 (541)14,920 (541)
Corporate debt securities1,050 (376)7,461 (89)8,511 (465)
SBA pool securities33 — 12,745 (691)12,778 (691)
Mortgage-backed securities1,678 (17)455,223 (13,651)456,901 (13,668)
Total debt securities available-for-sale$2,761 $(393)$546,745 $(15,534)$549,506 $(15,927)
December 31, 2024      
U.S. Treasuries$272,564 $(1,376)$353,787 $(3,689)$626,351 $(5,065)
U.S. government sponsored agencies— — 994 (16)994 (16)
State, county and municipal securities3,953 (17)15,940 (1,053)19,893 (1,070)
Corporate debt securities383 (13)8,400 (581)8,783 (594)
SBA pool securities52,850 (322)17,491 (1,232)70,341 (1,554)
Mortgage-backed securities177,438 (1,968)481,617 (28,771)659,055 (30,739)
Total debt securities available-for-sale$507,188 $(3,696)$878,229 $(35,342)$1,385,417 $(39,038)

As of September 30, 2025, the Company’s available-for-sale security portfolio consisted of 416 securities, 319 of which were in an unrealized loss position. At September 30, 2025, the Company held 272 mortgage-backed securities that were in an unrealized loss position, all of which were issued by U.S. government-sponsored entities and agencies. At September 30, 2025, the Company held 26 U.S. Small Business Administration (“SBA”) pool securities, 14 state, county and municipal securities, five corporate securities, and two U.S. Treasury securities that were in an unrealized loss position.

The following table shows the gross unrealized losses and estimated fair value of held-to-maturity securities aggregated by category and length of time that securities have been in a continuous unrealized loss position at September 30, 2025 and December 31, 2024:

 Less Than 12 Months12 Months or MoreTotal
(dollars in thousands)
Securities held-to-maturity
Estimated
Fair
Value		Unrealized
Losses		Estimated
Fair
Value		Unrealized
Losses		Estimated
Fair
Value		Unrealized
Losses
September 30, 2025
State, county and municipal securities$— $— $28,351 $(5,132)$28,351 $(5,132)
Mortgage-backed securities34,364 (90)87,860 (10,191)122,224 (10,281)
Total debt securities held-to-maturity$34,364 $(90)$116,211 $(15,323)$150,575 $(15,413)
December 31, 2024
State, county and municipal securities$1,702 $(49)$25,707 $(6,165)$27,409 $(6,214)
Mortgage-backed securities22,710 (848)79,366 (13,667)102,076 (14,515)
Total debt securities held-to-maturity$24,412 $(897)$105,073 $(19,832)$129,485 $(20,729)

As of September 30, 2025, the Company’s held-to-maturity security portfolio consisted of 58 securities, 43 of which were in an unrealized loss position. At September 30, 2025, the Company held 35 mortgage-backed securities and eight state, county and municipal securities that were in an unrealized loss position.

At September 30, 2025 and December 31, 2024, all of the Company’s mortgage-backed securities were obligations of government-sponsored agencies.

Management and the Company’s Asset and Liability Committee (the “ALCO Committee”) evaluate available-for-sale securities in an unrealized loss position on at least a quarterly basis, and more frequently when economic or market concerns warrant such
evaluation, to determine if credit-related impairment exists. Management first evaluates whether they intend to sell or more likely than not will be required to sell an impaired security before recovering its amortized cost basis. If either criteria is met, the entire amount of unrealized loss is recognized in earnings with a corresponding adjustment to the security's amortized cost basis. If either of the above criteria is not met, management evaluates whether the decline in fair value is attributable to credit or resulted from other factors. The Company does not intend to sell these available-for-sale investment securities at an unrealized loss position at September 30, 2025, and it is more likely than not that the Company will not be required to sell these securities prior to recovery or maturity. Based on the results of management's review, at September 30, 2025, management determined that $74,000 was attributable to credit impairment and an allowance for credit losses was recorded. The remaining $15.9 million in unrealized loss was determined to be from factors other than credit.

(dollars in thousands)Three Months Ended September 30,Nine Months Ended September 30,
Allowance for credit losses
2025202420252024
Beginning balance$66 $68 $69 $69 
Provision for other credit losses8 (2)5 (3)
Ending balance$74 $66 $74 $66 

The Company's held-to-maturity securities have no expected credit losses, and no related allowance for credit losses has been established.

The following table is a summary of sales activities in the Company's debt securities available for sale for the three and nine months ended September 30, 2025 and 2024:
Three Months Ended September 30,Nine Months Ended September 30,
(dollars in thousands)2025202420252024
Gross gains on sales of securities available for sale$116 $— $116 $— 
Gross losses on sales of securities available for sale— — — — 
Net realized gains on sales of securities available for sale$116 $— $116 $— 
Sales proceeds$45,039 $— $45,039 $— 

Total net gain (loss) on securities reported on the consolidated statements of income and comprehensive income is comprised of the following for the three and nine months ended September 30, 2025 and 2024:

Three Months Ended September 30,Nine Months Ended September 30,
(dollars in thousands)2025202420252024
Net realized gains on sales of securities available-for-sale$116 $— $116 $— 
Unrealized holding gains (losses) on equity securities(119)(3,945)(79)6 
Net realized gains on sales of other investments1,584 3,937 1,584 12,314 
Net gain (loss) on securities$1,581 $(8)$1,621 $12,320