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Investments (Tables)
3 Months Ended
Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Available-for-sale securities reconciliation
The following table summarizes the amortized cost and fair value of securities available-for-sale and securities held-to-maturity at March 31, 2024 and December 31, 2023 and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) and gross unrealized gains and losses (in thousands): 
 March 31, 2024
Available-for-Sale SecuritiesAmortized Cost
Gross
Unrealized
 Gains
Gross
Unrealized
Losses
Estimated
 Fair Value
Allowance for Credit Losses
Debt securities:    
U.S. Treasury securities$9,990 $— $(1,112)$8,878 $— 
U.S. Government agencies100 — (8)92 — 
Obligations of states and political subdivisions197,311 — (18,906)178,405 — 
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations
86,205 (5,411)80,798 — 
Private label mortgage and asset backed securities
349,919 (44,565)305,361 — 
Total available-for-sale$643,525 $11 $(70,002)$573,534 $— 
March 31, 2024
Held-to-Maturity SecuritiesAmortized Cost
Gross
Unrealized
 Gains
Gross
Unrealized
Losses
Estimated
 Fair Value
Allowance for Credit Losses
Debt securities:
Obligations of states and political subdivisions$192,099 $70 $(15,964)$176,205 $14 
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations
10,841 — (2,010)8,831 — 
Private label mortgage and asset backed securities
54,354 — (5,738)48,616 11 
Corporate debt securities46,112 — (4,871)41,241 869 
Total held-to-maturity$303,406 $70 $(28,583)$274,893 $894 
 December 31, 2023
Available-for-Sale SecuritiesAmortized Cost
Gross
Unrealized
 Gains
Gross
Unrealized
Losses
Allowance for Credit LossesEstimated
Fair Value
Debt securities:    
U.S. Treasury securities$9,990 $— $(1,036)$— $8,954 
U.S. Government agencies102 — (7)— 95 
Obligations of states and political subdivisions198,070 — (17,848)— 180,222 
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations
88,874 (5,525)— 83,352 
Private label mortgage and asset backed securities
372,610 10 (48,047)— 324,573 
Total available-for-sale$669,646 $13 $(72,463)$— $597,196 

December 31, 2023
Held-to-Maturity SecuritiesAmortized Cost
Gross
Unrealized
 Gains
Gross
Unrealized
Losses
Estimated
 Fair Value
Allowance for Credit Losses
Debt securities:
Obligations of states and political subdivisions192,070 70 (14,188)$177,952 $20 
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations
10,758 — (1,692)9,066 — 
Private label mortgage and asset backed securities
54,579 — (5,944)48,635 11 
Corporate debt securities46,086 — (4,736)41,350 1,020 
Total held-to-maturity$303,493 $70 $(26,560)$277,003 $1,051 
Realized gains and losses
Proceeds and gross realized gains (losses) from the sales or calls of available-for-sale investment securities for the periods ended March 31, 2024 and 2023 are shown below (in thousands):
For the Three Month
Ended March 31,
Available-for-Sale Securities20242023
Proceeds from sales or calls$5,700 $12,066 
Gross realized gains from sales or calls— — 
Gross realized losses from sales or calls(373)(219)
Investment
The following table summarizes the Company’s AFS debt securities in an unrealized loss position for which an allowance for credit losses has not been recorded, aggregated by major security type and length of time in a continuous unrealized loss position (in thousands): 
 March 31, 2024
 Less than 12 Months12 Months or MoreTotal
 FairUnrealizedFairUnrealizedFairUnrealized
Available-for-Sale SecuritiesValueLossesValueLossesValueLosses
Debt securities:      
U.S. Treasury securities
$— $— $8,878 $(1,112)$8,878 $(1,112)
U.S. Government agencies
— — 92 (8)92 (8)
Obligations of states and political subdivisions
— — 178,405 (18,906)178,405 (18,906)
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations
375 (7)80,225 (5,404)80,600 (5,411)
Private label mortgage and asset backed securities
856 (8)304,451 (44,557)305,307 (44,565)
Total available-for-sale$1,231 $(15)$572,051 $(69,987)$573,282 $(70,002)

 December 31, 2023
 Less than 12 Months12 Months or MoreTotal
 FairUnrealizedFairUnrealizedFairUnrealized
Available-for-Sale SecuritiesValueLossesValueLossesValueLosses
Debt securities:     
U.S. Treasury securities$— $— $8,954 $(1,036)$8,954 $(1,036)
U.S. Government agencies
— — 95 (7)95 (7)
Obligations of states and political subdivisions
— — 180,222 (17,848)180,222 (17,848)
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations
392 (3)82,760 (5,522)83,152 (5,525)
Private label mortgage and asset backed securities
— — 323,655 (48,047)323,655 (48,047)
Total available-for-sale$392 $(3)$595,686 $(72,460)$596,078 $(72,463)
Debt Securities, Held-to-maturity, Credit Quality Indicator The following table summarizes the amortized cost of debt securities held-to-maturity at the dates indicated, aggregated by credit quality indicator. U.S. Government sponsored agencies are not included in the below tables as credit ratings are not applicable.
March 31, 2024
Debt Securities Held-to-Maturity (in thousands)AAA/AA/ABBBUnrated
Obligations of states and political subdivisions$192,099 $— $— 
Private label mortgage and asset backed securities
46,316 — 8,038 
Corporate debt securities— 30,182 15,930 
Total debt securities held-to-maturity$238,415 $30,182 $23,968 
Schedule of Maturities of Long-Term Debt
The amortized cost and estimated fair value of available-for-sale and held-to maturity investment securities at March 31, 2024 by contractual maturity is shown below (in thousands).  Expected maturities will differ from contractual maturities because the issuers of the securities may 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.

March 31, 2024December 31, 2023
Available-for-Sale SecuritiesAmortized CostEstimated Fair
Value
Amortized CostEstimated Fair
Value
Within one year$— $— $— $— 
After one year through five years15,662 13,754 9,992 8,954 
After five years through ten years34,482 30,340 40,264 35,379 
After ten years157,157 143,189 157,804 144,843 
 207,301 187,283 208,060 189,176 
Investment securities not due at a single maturity date:  
U.S. Government agencies100 92 102 95 
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations
86,205 80,798 88,874 83,352 
Private label mortgage and asset backed securities349,919 305,361 372,610 324,573 
Total available-for-sale$643,525 $573,534 $669,646 $597,196 

March 31, 2024December 31, 2023
Held-to-Maturity SecuritiesAmortized CostEstimated Fair
Value
Amortized CostEstimated Fair
Value
Within one year$— $— $— $— 
After one year through five years8,492 8,142 8,463 8,136 
After five years through ten years74,868 68,489 74,746 68,552 
After ten years108,739 99,574 108,861 101,264 
192,099 176,205 192,070 177,952 
Investment securities not due at a single maturity date:
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations10,841 8,831 10,758 9,066 
Private label mortgage and asset backed securities54,354 48,616 54,579 48,635 
Corporate debt securities46,112 41,241 46,086 41,350 
Total held-to-maturity$303,406 $274,893 $303,493 $277,003