v3.25.3
Investment Securities (Notes)
9 Months Ended
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Investment Securities Available for Sale
The following tables show the amortized cost, gross unrealized gains and losses, and fair value of securities available for sale, by security type as of September 30, 2025 and December 31, 2024.
 September 30, 2025
 Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
(Losses)
Fair
Value
Securities available for sale:
State and political subdivisions$214,189 $14 $(39,145)$175,058 
Collateralized mortgage obligations (1)
260,546  (43,449)217,097 
Mortgage-backed securities (1)
137,628 2 (19,652)117,978 
Collateralized loan obligations14,823 8  14,831 
Corporate notes13,750  (858)12,892 
 $640,936 $24 $(103,104)$537,856 
 December 31, 2024
 Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
(Losses)
Fair
Value
Securities available for sale:
State and political subdivisions$215,942 $— $(41,797)$174,145 
Collateralized mortgage obligations (1)
278,754 — (59,490)219,264 
Mortgage-backed securities (1)
145,992 — (26,173)119,819 
Collateralized loan obligations18,932 33 — 18,965 
Corporate notes13,750 — (1,378)12,372 
 $673,370 $33 $(128,838)$544,565 
(1)Collateralized mortgage obligations and mortgage-backed securities consist of residential and commercial mortgage pass-through securities and collateralized mortgage obligations guaranteed by FNMA, FHLMC, GNMA and SBA.

Securities with a total amortized cost of approximately $547,338 and $572,491 as of September 30, 2025 and December 31, 2024, respectively, were pledged as collateral for borrowings and public fund deposits, and for other purposes as required or permitted by law or regulation.

The amortized cost and fair value of securities available for sale as of September 30, 2025, by contractual maturity, are shown below. Certain securities have call features that allow the issuer to call the securities prior to maturity. Expected maturities may differ from contractual maturities for collateralized mortgage obligations and mortgage-backed securities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Therefore, collateralized mortgage obligations and mortgage-backed securities are not included in the maturity categories within the following maturity summary.
 September 30, 2025
 Amortized CostFair Value
Due after one year through five years$3,034 $2,755 
Due after five years through ten years51,954 48,650 
Due after ten years187,774 151,376 
 242,762 202,781 
Collateralized mortgage obligations and mortgage-backed securities398,174 335,075 
 $640,936 $537,856 
There were no sales of securities available for sale during the three and nine months ended September 30, 2025 and 2024.

The following tables show the fair value and gross unrealized losses, aggregated by investment type and length of time that individual securities have been in a continuous loss position, as of September 30, 2025 and December 31, 2024.

September 30, 2025
 Less than 12 months12 months or longerTotal
 Fair
Value
Gross
Unrealized
(Losses)
No. of SecuritiesFair
Value
Gross
Unrealized
(Losses)
No. of SecuritiesFair
Value
Gross
Unrealized
(Losses)
Securities available for sale:
State and political
subdivisions$ $ $173,161 $(39,145)94$173,161 $(39,145)
Collateralized mortgage
obligations  217,097 (43,449)68217,097 (43,449)
Mortgage-backed securities  117,564 (19,652)25117,564 (19,652)
Corporate notes  12,892 (858)812,892 (858)
 $ $ $520,714 $(103,104)195$520,714 $(103,104)
       
 December 31, 2024
 Less than 12 months12 months or longerTotal
 Fair
Value
Gross
Unrealized
(Losses)
No. of SecuritiesFair
Value
Gross
Unrealized
(Losses)
No. of SecuritiesFair
Value
Gross
Unrealized
(Losses)
Securities available for sale:
State and political
subdivisions$4,485 $(271)7$169,650 $(41,526)90$174,135 $(41,797)
Collateralized mortgage
obligations— — 219,264 (59,490)69219,264 (59,490)
Mortgage-backed securities610 (3)1119,209 (26,170)25119,819 (26,173)
Corporate notes— — 12,372 (1,378)812,372 (1,378)
 $5,095 $(274)8$520,495 $(128,564)192$525,590 $(128,838)

If the Company intends to sell, or it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis, then the security is written down to fair value through income. As of September 30, 2025 and December 31, 2024, the Company did not have the intent to sell, nor was it more likely than not that it would be required to sell any of the securities in an unrealized loss position prior to recovery. As of September 30, 2025 and December 31, 2024, the Company also determined that no individual securities in an unrealized loss position represented credit losses that would require an allowance for credit losses. The Company concluded that the unrealized losses were primarily attributable to increases in market interest rates since these securities were purchased and other market conditions. Accrued interest receivable is not included in available-for-sale security balances and is presented in the "Accrued interest receivable" line of the Consolidated Balance Sheets. Interest receivable on securities was $2,862 and $2,842 as of September 30, 2025 and December 31, 2024, respectively, and was excluded from the measurement of credit losses.