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Securities
9 Months Ended
Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]  
Securities Securities
The amortized cost, gross unrealized gains and losses, and fair values of available-for-sale and held-to-maturity debt securities by type follows as of:
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Estimated
 Fair
 Value
September 30, 2023
Available-for-sale:
U.S. treasury$58,478 $— $(5,625)$52,853 
U.S. agency2,089 — (34)2,055 
Obligations of states and political subdivisions29,941 — (5,453)24,488 
Mortgage backed - residential118,975 — (18,422)100,553 
Collateralized mortgage obligations208,949 — (24,492)184,457 
Mortgage backed - commercial134,990 — (18,079)116,911 
Other debt16,787 — (2,112)14,675 
Total available-for-sale$570,209 $— $(74,217)$495,992 
Held-to-maturity:
Obligations of states and political subdivisions$25,500 $— $(5,473)$20,027 
Mortgage backed - residential7,859 — (815)7,044 
Collateralized mortgage obligations4,051 — (330)3,721 
Total held-to-maturity$37,410 $— $(6,618)$30,792 
December 31, 2022
Available-for-sale:
U.S. treasury$62,010 $— $(5,361)$56,649 
U.S. agency2,881 — (47)2,834 
Obligations of states and political subdivisions29,897 — (4,998)24,899 
Mortgage backed - residential129,955 (13,826)116,135 
Collateralized mortgage obligations225,559 — (21,294)204,265 
Mortgage backed - commercial130,997 — (13,661)117,336 
Other debt16,774 — (1,919)14,855 
Total available-for-sale$598,073 $$(61,106)$536,973 
Held-to-maturity:
Obligations of states and political subdivisions$25,378 $$(4,891)$20,492 
Mortgage backed - residential8,705 (511)8,198 
Collateralized mortgage obligations4,818 — (290)4,528 
Total held-to-maturity$38,901 $$(5,692)$33,218 
There was no allowance for credit losses related to our investment securities as of September 30, 2023.
As of September 30, 2023 and December 31, 2022, there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity.
Fair value and unrealized losses on debt securities by type and length of time in a continuous unrealized loss position without an allowance for credit losses were as follows:
Less than 12 months12 months or longerTotal
Estimated
Fair
Value
Unrealized
Losses
Estimated
Fair
Value
Unrealized
Losses
Estimated
Fair
Value
Unrealized
Losses
Number
of
Securities
September 30, 2023
Available-for-sale:
U.S. treasury$— $— $52,853 $(5,625)$52,853 $(5,625)
U.S. agency— — 2,055 (34)2,055 (34)
Obligations of states and political subdivisions— — 24,488 (5,453)24,488 (5,453)19 
Mortgage backed - residential320 (4)100,233 (18,418)100,553 (18,422)88 
Collateralized mortgage obligations— — 184,457 (24,492)184,457 (24,492)66 
Mortgage backed - commercial5,086 (115)111,825 (17,964)116,911 (18,079)25 
Other debt— — 14,675 (2,112)14,675 (2,112)
Total available-for-sale$5,406 $(119)$490,586 $(74,098)$495,992 $(74,217)223 
Held-to-maturity:
Obligations of states and political subdivisions$329 $(4)$19,698 $(5,469)$20,027 $(5,473)9
Mortgage backed - residential135 — 6,888 (815)7,023 (815)13
Collateralized mortgage obligations— — 3,721 (330)3,721 (330)5
Total held-to-maturity$464 $(4)$30,307 $(6,614)$30,771 $(6,618)27
Less than 12 months12 months or longerTotal
Estimated
Fair
Value
Unrealized
Losses
Estimated
Fair
Value
Unrealized
Losses
Estimated
Fair
Value
Unrealized
Losses
Number
of
Securities
December 31, 2022
Available-for-sale:
U.S. treasury$25,702 $(967)$30,947 $(4,394)$56,649 $(5,361)10 
U.S. agency— — 2,834 (47)2,834 (47)
Obligations of states and political subdivisions21,676 (3,784)2,753 (1,214)24,429 (4,998)18 
Mortgage backed - residential51,921 (2,939)63,691 (10,887)115,612 (13,826)87 
Collateralized mortgage obligations111,360 (4,631)92,905 (16,663)204,265 (21,294)66 
Mortgage backed - commercial70,710 (6,475)46,626 (7,186)117,336 (13,661)22 
Other debt14,855 (1,919)— — 14,855 (1,919)
Total available-for-sale$296,224 $(20,715)$239,756 $(40,391)$535,980 $(61,106)219 
Held-to-maturity:
Obligations of states and political subdivisions$20,153 $(4,891)$— $— $20,153 $(4,891)8
Mortgage backed - residential7,993 (511)— — 7,993 (511)10
Collateralized mortgage obligations4,127 (275)401 (15)4,528 (290)5
Total held-to-maturity$32,273 $(5,677)$401 $(15)$32,674 $(5,692)23
We do not consider the unrealized losses to be credit-related, as these unrealized losses primarily relate to changes in interest rates and market spreads subsequent to purchase. We do not have plans to sell any of the available-for-sale debt securities with unrealized losses as of September 30, 2023, and we believe it is more likely than not that we would not be required to sell such available-for-sale debt securities before recovery of their amortized cost.
We continue to monitor unrealized loss positions for potential credit impairments. During the nine months ended September 30, 2023, there were no credit impairments related to our investment securities.
The amortized cost and fair value of our debt securities by contractual maturity as of September 30, 2023 are summarized in the following table. Maturities are based on the final contractual payment dates and do not reflect the impact of prepayments or earlier redemptions that may occur.
Amortized
Cost
Estimated
Fair
Value
Available-for-sale:
Due within 1 year$14,995 $14,726 
Due after 1 year through 5 years61,708 55,491 
Due after 5 years through 10 years146,294 127,028 
Due after 10 years347,212 298,747 
Total available-for-sale$570,209 $495,992 
Held-to-maturity:
Due after 1 year through 5 years$1,026 $983 
Due after 5 years through 10 years757 711 
Due after 10 years35,627 29,098 
Total held-to-maturity$37,410 $30,792 
Securities with a carrying value of $437,724 and $428,721 were pledged to secure public deposits, securities sold under agreements to repurchase and borrowed funds at September 30, 2023 and December 31, 2022, respectively.
There were no proceeds from sales and calls of securities for the three and nine months ended September 30, 2023. There were proceeds from sales and calls of securities for the three and nine months ended September 30, 2022 of $81,016. No gain or loss was recognized for the three and nine months ended September 30, 2022 as the securities sold were acquired at fair value on April 1, 2022 in the Pioneer merger and were sold on April 5, 2022.