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Securities (Tables)
 3 Months Ended
Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-sale 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
March 31, 2024
Available-for-sale:
U.S. treasury$56,459 $— $(8,381)$48,078 
U.S. agency1,676 — (26)1,650 
Obligations of states and political subdivisions30,018 — (4,455)25,563 
Mortgage backed - residential118,379 76 (16,836)101,619 
Collateralized mortgage obligations198,984 35 (21,609)177,410 
Mortgage backed - commercial144,402 277 (15,321)129,358 
Other debt16,796 — (1,396)15,400 
Total available-for-sale$566,714 $388 $(68,024)$499,078 
Held-to-maturity:
Obligations of states and political subdivisions$25,584 $— $(4,615)$20,969 
Mortgage backed - residential7,327 — (713)6,614 
Collateralized mortgage obligations3,729 — (277)3,452 
Total held-to-maturity$36,640 $— $(5,605)$31,035 
December 31, 2023
Available-for-sale:
U.S. treasury$58,468 $— $(4,234)$54,234 
U.S. agency1,872 — (33)1,839 
Obligations of states and political subdivisions29,979 — (4,009)25,970 
Mortgage backed - residential121,288 119 (14,974)106,433 
Collateralized mortgage obligations203,394 — (21,861)181,533 
Mortgage backed - commercial145,062 497 (14,367)131,192 
Other debt16,792 — (1,236)15,556 
Total available-for-sale$576,855 $616 $(60,714)$516,757 
Held-to-maturity:
Obligations of states and political subdivisions$25,542 $3 $(3,987)$21,558 
Mortgage backed - residential7,548 2 (560)6,990 
Collateralized mortgage obligations3,893 — (260)3,633 
Total held-to-maturity$36,983 $5 $(4,807)$32,181 
Schedule of Held-to-maturity 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
March 31, 2024
Available-for-sale:
U.S. treasury$56,459 $— $(8,381)$48,078 
U.S. agency1,676 — (26)1,650 
Obligations of states and political subdivisions30,018 — (4,455)25,563 
Mortgage backed - residential118,379 76 (16,836)101,619 
Collateralized mortgage obligations198,984 35 (21,609)177,410 
Mortgage backed - commercial144,402 277 (15,321)129,358 
Other debt16,796 — (1,396)15,400 
Total available-for-sale$566,714 $388 $(68,024)$499,078 
Held-to-maturity:
Obligations of states and political subdivisions$25,584 $— $(4,615)$20,969 
Mortgage backed - residential7,327 — (713)6,614 
Collateralized mortgage obligations3,729 — (277)3,452 
Total held-to-maturity$36,640 $— $(5,605)$31,035 
December 31, 2023
Available-for-sale:
U.S. treasury$58,468 $— $(4,234)$54,234 
U.S. agency1,872 — (33)1,839 
Obligations of states and political subdivisions29,979 — (4,009)25,970 
Mortgage backed - residential121,288 119 (14,974)106,433 
Collateralized mortgage obligations203,394 — (21,861)181,533 
Mortgage backed - commercial145,062 497 (14,367)131,192 
Other debt16,792 — (1,236)15,556 
Total available-for-sale$576,855 $616 $(60,714)$516,757 
Held-to-maturity:
Obligations of states and political subdivisions$25,542 $3 $(3,987)$21,558 
Mortgage backed - residential7,548 2 (560)6,990 
Collateralized mortgage obligations3,893 — (260)3,633 
Total held-to-maturity$36,983 $5 $(4,807)$32,181 
Schedule of Fair Value and Unrealized Losses on Debt Securities in Continuous Unrealized Loss Position
Fair value and unrealized losses on debt securities by type and length of time in a continuous unrealized loss position without an allowance for credit losses were as follows:
Less than 12 months12 months or longerTotal
Estimated
Fair
Value		Unrealized
Losses		Estimated
Fair
Value		Unrealized
Losses		Estimated
Fair
Value		Unrealized
Losses		Number
of
Securities
March 31, 2024
Available-for-sale:
U.S. treasury$— $— $48,078 $(8,381)$48,078 $(8,381)7 
U.S. agency— — 1,650 (26)1,650 (26)7 
Obligations of states and political subdivisions— — 25,563 (4,455)25,563 (4,455)19 
Mortgage backed - residential533 (2)95,514 (16,834)96,047 (16,836)85 
Collateralized mortgage obligations— — 159,554 (21,609)159,554 (21,609)62 
Mortgage backed - commercial2,909 (68)113,046 (15,253)115,955 (15,321)24 
Other debt— — 15,400 (1,396)15,400 (1,396)9 
Total available-for-sale$3,442 $(70)$458,805 $(67,954)$462,247 $(68,024)213 
Held-to-maturity:
Obligations of states and political subdivisions$— $— $20,638 $(4,615)$20,638 $(4,615)8
Mortgage backed - residential39 — 6,485 (713)6,524 (713)11
Collateralized mortgage obligations— — 3,452 (277)3,452 (277)5
Total held-to-maturity$39 $— $30,575 $(5,605)$30,614 $(5,605)24
Less than 12 months12 months or longerTotal
Estimated
Fair
Value		Unrealized
Losses		Estimated
Fair
Value		Unrealized
Losses		Estimated
Fair
Value		Unrealized
Losses		Number
of
Securities
December 31, 2023
Available-for-sale:
U.S. treasury$— $— $54,234 $(4,234)$54,234 $(4,234)9 
U.S. agency— — 1,839 (33)1,839 (33)7 
Obligations of states and political subdivisions— — 25,970 (4,009)25,970 (4,009)19 
Mortgage backed - residential— — 100,571 (14,974)100,571 (14,974)83 
Collateralized mortgage obligations— — 181,533 (21,861)181,533 (21,861)65 
Mortgage backed - commercial4,721 (27)114,625 (14,340)119,346 (14,367)24 
Other debt— — 15,556 (1,236)15,556 (1,236)9 
Total available-for-sale$4,721 $(27)$494,328 $(60,687)$499,049 $(60,714)216 
Held-to-maturity:
Obligations of states and political subdivisions$— $— $21,223 $(3,987)$21,223 $(3,987)8
Mortgage backed - residential— — 6,845 (560)6,845 (560)10
Collateralized mortgage obligations— — 3,633 (260)3,633 (260)5
Total held-to-maturity$— $— $31,701 $(4,807)$31,701 $(4,807)23
Schedule of Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity
Amortized
Cost		Estimated
Fair
Value
Available-for-sale:
Due within 1 year$21,211 $16,965 
Due after 1 year through 5 years72,081 67,132 
Due after 5 years through 10 years143,052 126,628 
Due after 10 years330,370 288,353 
Total available-for-sale$566,714 $499,078 
Held-to-maturity:
Due after 1 year through 5 years$949 $920 
Due after 5 years through 10 years720 688 
Due after 10 years34,971 29,427 
Total held-to-maturity$36,640 $31,035