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Investment Securities (Tables)
 3 Months Ended
Mar. 31, 2026
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available For Sale, Held-to-Maturity, and Restricted Equity Securities
The following table summarizes the amortized cost and estimated fair value of investment securities at March 31, 2026:
Amortized
Cost		Unrealized GainsUnrealized LossesFair Value (Estimated)
Securities available for sale
U.S. Treasury & Agency securities$23,045,000 $— $(5,087,000)$17,958,000 
Mortgage-backed securities236,884,000 210,000 (30,780,000)206,314,000 
State and political subdivisions36,461,000 — (5,861,000)30,600,000 
Asset-backed securities1,903,000 13,000 — 1,916,000 
$298,293,000 $223,000 $(41,728,000)$256,788,000 
Securities to be held to maturity
U.S. Treasury & Agency securities$38,100,000 $— $(8,325,000)$29,775,000 
Mortgage-backed securities47,634,000 72,000 (8,975,000)38,731,000 
State and political subdivisions247,468,000 71,000 (27,768,000)219,771,000 
Corporate securities21,000,000 76,000 (677,000)20,399,000 
$354,202,000 $219,000 $(45,745,000)$308,676,000 
Less allowance for credit losses(145,000)— — — 
Net securities to be held to maturity$354,057,000 $219,000 $(45,745,000)$308,676,000 
Restricted equity securities
Federal Home Loan Bank Stock$7,277,000 $— $— $7,277,000 
Federal Reserve Bank Stock1,037,000 — — 1,037,000 
$8,314,000 $— $— $8,314,000 
The following table summarizes the amortized cost and estimated fair value of investment securities at December 31, 2025:
Amortized
Cost		Unrealized GainsUnrealized LossesFair Value (Estimated)
Securities available for sale
U.S. Treasury & Agency securities$23,045,000 $— $(4,973,000)$18,072,000 
Mortgage-backed securities240,166,000 410,000 (30,142,000)210,434,000 
State and political subdivisions38,953,000 26,000 (4,989,000)33,990,000 
Asset-backed securities1,989,000 10,000 (15,000)1,984,000 
$304,153,000 $446,000 $(40,119,000)$264,480,000 
Securities to be held to maturity
U.S. Treasury & Agency securities$38,100,000 $— $(8,221,000)$29,879,000 
Mortgage-backed securities48,566,000 116,000 (8,924,000)39,758,000 
State and political subdivisions248,408,000 161,000 (22,972,000)225,597,000 
Corporate securities21,000,000 52,000 (804,000)20,248,000 
$356,074,000 $329,000 $(40,921,000)$315,482,000 
Less allowance for credit losses(146,000)— — — 
Net securities to be held to maturity$355,928,000 $329,000 $(40,921,000)$315,482,000 
Restricted equity securities
Federal Home Loan Bank Stock$7,238,000 $— $— $7,238,000 
Federal Reserve Bank Stock1,037,000 — — 1,037,000 
$8,275,000 $— $— $8,275,000 
The following table summarizes the amortized cost and estimated fair value of investment securities at March 31, 2025:
Amortized
Cost		Unrealized GainsUnrealized LossesFair Value (Estimated)
Securities available for sale
U.S. Treasury & Agency securities$24,543,000 $— $(5,593,000)$18,950,000 
Mortgage-backed securities262,912,000 381,000 (36,416,000)226,877,000 
State and political subdivisions40,130,000 — (7,368,000)32,762,000 
Asset-backed securities2,168,000 13,000 (6,000)2,175,000 
$329,753,000 $394,000 $(49,383,000)$280,764,000 
Securities to be held to maturity
U.S. Treasury & Agency securities$38,100,000 $— $(8,904,000)$29,196,000 
Mortgage-backed securities51,600,000 52,000 (10,402,000)41,250,000 
State and political subdivisions251,818,000 38,000 (34,924,000)216,932,000 
Corporate securities27,250,000 — (1,840,000)25,410,000 
$368,768,000 $90,000 $(56,070,000)$312,788,000 
Less allowance for credit losses(197,000)— — — 
Net securities to be held to maturity$368,571,000 $90,000 $(56,070,000)$312,788,000 
Restricted equity securities
Federal Home Loan Bank Stock$6,472,000 $— $— $6,472,000 
Federal Reserve Bank Stock1,037,000 — — 1,037,000 
$7,509,000 $— $— $7,509,000 
Schedule of Contractual Maturities of Investment Securities The following table summarizes the contractual maturities of investment securities at March 31, 2026:
Securities available for saleSecurities to be held to maturity
Amortized
Cost		Fair Value (Estimated)Amortized
Cost		Fair Value (Estimated)
Due in 1 year or less$90,000 $90,000 $1,733,000 $1,730,000 
Due in 1 to 5 years7,854,000 6,964,000 35,943,000 34,290,000 
Due in 5 to 10 years20,725,000 18,949,000 106,371,000 100,124,000 
Due after 10 years269,624,000 230,785,000 210,155,000 172,532,000 
$298,293,000 $256,788,000 $354,202,000 $308,676,000 
The following table summarizes the contractual maturities of investment securities at December 31, 2025:
Securities available for saleSecurities to be held to maturity
Amortized
Cost		Fair Value (Estimated)Amortized
Cost		Fair Value (Estimated)
Due in 1 year or less$92,000 $92,000 $1,729,000 $1,725,000 
Due in 1 to 5 years7,413,000 6,584,000 34,803,000 33,363,000 
Due in 5 to 10 years20,390,000 18,693,000 98,390,000 94,855,000 
Due after 10 years276,258,000 239,111,000 221,152,000 185,539,000 
$304,153,000 $264,480,000 $356,074,000 $315,482,000 
The following table summarizes the contractual maturities of investment securities at March 31, 2025:
Securities available for saleSecurities to be held to maturity
Amortized
Cost		Fair Value (Estimated)Amortized
Cost		Fair Value (Estimated)
Due in 1 year or less$1,514,000 $1,499,000 $2,704,000 $2,714,000 
Due in 1 to 5 years261,000 260,000 24,370,000 23,098,000 
Due in 5 to 10 years29,329,000 25,758,000 104,094,000 96,115,000 
Due after 10 years298,649,000 253,247,000 237,600,000 190,861,000 
$329,753,000 $280,764,000 $368,768,000 $312,788,000 
Schedule of Securities Gains and Losses The following table shows securities gains and losses on AFS securities for the three months ended March 31, 2026 and 2025:
For the three months ended March 31,
20262025
Proceeds from sales of securities$1,410,000 $— 
Gross realized gains12,000 — 
Net gain$12,000 $— 
Related income taxes$3,000 $— 
Schedule of Temporary Impairment Losses
The following table summarizes AFS debt securities in an unrealized loss position for which an ACL has not been recorded at March 31, 2026, aggregated by major security type and length of time in a continuous unrealized loss position:
Less than 12 months12 months or moreTotal
Fair Value (Estimated)Unrealized LossesFair Value (Estimated)Unrealized LossesFair Value (Estimated)Unrealized Losses
U.S. Treasury & Agency securities$— $— $17,958,000 $(5,087,000)$17,958,000 $(5,087,000)
Mortgage-backed securities13,303,000 (96,000)171,539,000 (30,684,000)184,842,000 (30,780,000)
State and political subdivisions7,680,000 (200,000)22,830,000 (5,661,000)30,510,000 (5,861,000)
Asset-backed securities— — — — — — 
$20,983,000 $(296,000)$212,327,000 $(41,432,000)$233,310,000 $(41,728,000)
The following table summarizes AFS debt securities in an unrealized loss position for which an ACL has not been recorded at December 31, 2025 aggregated by major security type and length of time in a continuous unrealized loss position:
Less than 12 months12 months or moreTotal
Fair Value (Estimated)Unrealized LossesFair Value (Estimated)Unrealized LossesFair Value (Estimated)Unrealized Losses
U.S. Treasury & Agency securities$— $— $18,072,000 $(4,973,000)$18,072,000 $(4,973,000)
Mortgage-backed securities1,732,000 (4,000)177,093,000 (30,138,000)178,825,000 (30,142,000)
State and political subdivisions— — 30,672,000 (4,989,000)30,672,000 (4,989,000)
Asset-backed securities— — 1,096,000 (15,000)1,096,000 (15,000)
$1,732,000 $(4,000)$226,933,000 $(40,115,000)$228,665,000 $(40,119,000)
The following table summarizes AFS debt securities in an unrealized loss position for which an ACL has not been recorded at March 31, 2025 aggregated by major security type and length of time in a continuous unrealized loss position:
Less than 12 months12 months or moreTotal
Fair Value (Estimated)Unrealized LossesFair Value (Estimated)Unrealized LossesFair Value (Estimated)Unrealized Losses
U.S. Treasury & Agency securities$— $— $18,950,000 $(5,593,000)$18,950,000 $(5,593,000)
Mortgage-backed securities8,974,000 (105,000)185,973,000 (36,311,000)194,947,000 (36,416,000)
State and political subdivisions4,862,000 (172,000)27,720,000 (7,196,000)32,582,000 (7,368,000)
Asset-backed securities1,173,000 (6,000)— — 1,173,000 (6,000)
$15,009,000 $(283,000)$232,643,000 $(49,100,000)$247,652,000 $(49,383,000)
Schedule of Activity in the ACL for Held-to-maturity Debt Securities The following tables present the activity in the ACL for HTM debt securities by major security type for the three months ended March 31, 2026 and 2025:
For the three months ended
March 31, 2026March 31, 2025
State and Political SubdivisionsCorporate SecuritiesTotalState and Political SubdivisionsCorporate SecuritiesTotal
Allowance for credit losses:
   Beginning balance$68,000 $78,000 $146,000 $80,000 $116,000 $196,000 
   Credit loss (reduction) expense
(1,000)— (1,000)1,000 — 1,000 
   Securities charged-off— — — — — — 
   Recoveries— — — — — — 
   Total ending allowance balance$67,000 $78,000 $145,000 $81,000 $116,000 $197,000