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INVESTMENT SECURITIES (Tables)
 9 Months Ended
Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]  
Amortized Cost and Fair Values of AFS Securities At September 30, 2023 and December 31, 2022, all investment securities were classified as AFS. The following table summarizes amortized cost, fair value and ACL of investment securities, and the corresponding amounts of gross unrealized gains and losses recognized in AOCI, and the allowance for credit losses at September 30, 2023 and December 31, 2022:
Amortized CostGross Unrealized
Gains		Gross Unrealized
Losses		Allowance for Credit LossesFair Value
September 30, 2023
U.S. Treasury securities$20,060 $— $2,917 $— $17,143 
U.S. Government Agencies4,149 173 — — 4,322 
States and political subdivisions223,807 — 35,690 — 188,117 
GSE residential MBSs62,395 — 5,044 — 57,351 
GSE commercial MBSs4,413 365 — — 4,778 
GSE residential CMOs80,693 — 8,656 — 72,037 
Non-agency CMOs43,772 274 5,067 — 38,979 
Asset-backed113,813 447 1,945 — 112,315 
Other120 — — — 120 
Totals$553,222 $1,259 $59,319 $— $495,162 
December 31, 2022
U.S. Treasury securities$20,070 $— $2,779 n/a$17,291 
U.S. Government Agencies4,907 228 — n/a5,135 
States and political subdivisions225,825 19 28,430 n/a197,414 
GSE residential MBSs63,778 — 4,376 n/a59,402 
GSE residential CMOs75,446 — 7,068 n/a68,378 
Non-agency CMOs42,298 243 2,783 n/a39,758 
Asset-backed130,577 — 4,604 n/a125,973 
Other377 — — n/a377 
Totals$563,278 $490 $50,040 n/a$513,728 
Summary of Investment Securities with Unrealized Losses The following table summarizes investment securities with unrealized losses aggregated by major investment security type and the length of time in a continuous unrealized loss position. For these investment securities, no ACL was recorded at September 30, 2023 and no cumulative OTTI expense was recorded at December 31, 2022.
 Less Than 12 Months12 Months or MoreTotal
# of SecuritiesFair ValueUnrealized
Losses		# of SecuritiesFair ValueUnrealized
Losses		# of SecuritiesFair ValueUnrealized
Losses
September 30, 2023
U.S. Treasury securities— $— $— 3 $17,143 $2,917 3 $17,143 $2,917 
States and political subdivisions10 4,147 294 41 183,970 35,396 51 188,117 35,690 
GSE residential MBSs— — — 15 57,351 5,044 15 57,351 5,044 
GSE residential CMOs5 16,044 581 14 55,993 8,075 19 72,037 8,656 
Non-agency CMOs1 6,024 512 4 15,868 4,555 5 21,892 5,067 
Asset-backed1 892 7 15 77,377 1,938 16 78,269 1,945 
Totals17 $27,107 $1,394 92 $407,702 $57,925 109 $434,809 $59,319 
December 31, 2022
U.S. Treasury securities— $— $— 3 $17,291 $2,779 3 $17,291 $2,779 
States and political subdivisions29 135,579 13,809 17 60,102 14,621 46 195,681 28,430 
GSE residential MBSs5 26,100 925 10 33,302 3,451 15 59,402 4,376 
GSE residential CMOs8 28,732 1,884 9 39,646 5,184 17 68,378 7,068 
Non-agency CMOs4 26,555 1,135 2 8,639 1,648 6 35,194 2,783 
Asset-backed17 78,873 2,432 5 47,100 2,172 22 125,973 4,604 
Totals63 $295,839 $20,185 46 $206,080 $29,855 109 $501,919 $50,040 
Schedule of Amortized Cost and Fair Values of AFS Securities by Contractual Maturity The following table summarizes amortized cost and fair value of investment securities by contractual maturity at September 30, 2023. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.
Amortized CostFair Value
Due in one year or less$— $— 
Due after one year through five years31,439 27,291 
Due after five years through ten years56,845 49,216 
Due after ten years159,852 133,195 
CMOs and MBSs191,273 173,145 
Asset-backed113,813 112,315 
Totals$553,222 $495,162 
Proceeds From Sale of AFS Securities and Gross Gains and Gross Losses The following table summarizes proceeds from sales of investment securities and gross gains and gross losses for the three and nine months ended September 30, 2023 and 2022:
Three months ended September 30,Nine months ended September 30,
2023202220232022
Proceeds from sale of investment securities$19,900 $— $19,900 $3,075 
Gross gains2 — 2 25 
Gross losses— 14 10 17