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Securities (Tables)
 9 Months Ended
Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]  
Schedule of Amortized Cost and Fair Value of Securities Available for Sale
The amortized cost and fair value of securities available for sale were as follows as of the dates presented in the tables below.

There was no allowance for credit losses allocated to any of the Company’s available for sale securities as of September 30, 2024 or December 31, 2023.
 
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
September 30, 2024
Obligations of states and political subdivisions$20,310 $130 $(1,878)$18,562 
Residential mortgage backed securities:
Government agency mortgage backed securities191,650 374 (19,177)172,847 
Government agency collateralized mortgage obligations408,364 — (71,481)336,883 
Commercial mortgage backed securities:
Government agency mortgage backed securities6,010 — (466)5,544 
Government agency collateralized mortgage obligations137,474 192 (19,224)118,442 
Other debt securities114,637 605 (2,676)112,566 
$878,445 $1,301 $(114,902)$764,844 
 
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
December 31, 2023
Obligations of states and political subdivisions$36,374 $119 $(1,883)$34,610 
Residential mortgage backed securities:
Government agency mortgage backed securities301,400 172 (24,968)276,604 
Government agency collateralized mortgage obligations485,164 — (85,883)399,281 
Commercial mortgage backed securities:
Government agency mortgage backed securities6,029 — (637)5,392 
Government agency collateralized mortgage obligations161,299 24 (21,965)139,358 
Other debt securities72,383 109 (4,458)68,034 
$1,062,649 $424 $(139,794)$923,279 
The amortized cost and fair value of securities held to maturity were as follows as of the dates presented:
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
September 30, 2024
Obligations of states and political subdivisions$285,450 $38 $(34,861)$250,627 
Residential mortgage backed securities
Government agency mortgage backed securities386,654 14 (11,742)374,926 
Government agency collateralized mortgage obligations363,095 — (23,736)339,359 
Commercial mortgage backed securities:
Government agency mortgage backed securities16,966 — (2,404)14,562 
Government agency collateralized mortgage obligations43,966 — (6,326)37,640 
Other debt securities54,432 — (2,578)51,854 
$1,150,563 $52 $(81,647)$1,068,968 
Allowance for credit losses - held to maturity securities(32)
Held to maturity securities, net of allowance for credit losses$1,150,531 
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
December 31, 2023
Obligations of states and political subdivisions$288,154 $74 $(33,688)$254,540 
Residential mortgage backed securities
Government agency mortgage backed securities426,264 — (20,314)405,950 
Government agency collateralized mortgage obligations387,208 — (31,670)355,538 
Commercial mortgage backed securities:
Government agency mortgage backed securities16,983 — (2,972)14,011 
Government agency collateralized mortgage obligations44,514 — (6,977)37,537 
Other debt securities58,373 — (4,119)54,254 
$1,221,496 $74 $(99,740)$1,121,830 
Allowance for credit losses - held to maturity securities(32)
Held to maturity securities, net of allowance for credit losses$1,221,464 
Schedule of Realized Gain (Loss)
Securities sold during the nine months ended September 30, 2024 and 2023 are presented in the tables below. With respect to the securities sold during the first nine months ended September 30, 2024, the Company intended to sell these securities as of December 31, 2023, and completed the sale in January 2024. Therefore, the Company impaired the securities and recognized the loss in net income as of December 31, 2023. There were no securities sold during the third quarters of 2024 or 2023.
Carrying Value Immediately Prior to SaleNet ProceedsImpairment (Recognized in December 2023)
Nine months ended September 30, 2024
Obligations of states and political subdivisions$12,301 $11,360 $(941)
Residential mortgage backed securities:
Government agency mortgage backed securities107,389 95,922 (11,467)
Government agency collateralized mortgage obligations48,300 43,990 (4,310)
Commercial mortgage backed securities:
Government agency collateralized mortgage obligations28,547 25,913 (2,634)
$196,537 $177,185 $(19,352)
Carrying Value Immediately Prior to SaleNet ProceedsImpairment
Nine months ended September 30, 2023
Obligations of other U.S. Government agencies and corporations$170,000 $164,915 $(5,085)
Obligations of states and political subdivisions104,950 99,439 (5,511)
Residential mortgage backed securities:
Government agency mortgage backed securities137,196 130,602 (6,594)
Government agency collateralized mortgage obligations54,028 51,101 (2,927)
Commercial mortgage backed securities:
Government agency mortgage backed securities5,048 4,825 (223)
Government agency collateralized mortgage obligations40,197 38,099 (2,098)
$511,419 $488,981 $(22,438)
Schedule of Amortized Cost and Fair Value of Securities by Contractual Maturity
The amortized cost and fair value of securities at September 30, 2024 by contractual maturity are shown below. Expected maturities will differ from contractual maturities because issuers may call or prepay obligations with or without call or prepayment penalties.
 
 Held to MaturityAvailable for Sale
 Amortized
Cost		Fair
Value		Amortized
Cost		Fair
Value
Due within one year$1,308 $1,293 $998 $1,046 
Due after one year through five years6,268 5,963 42,107 42,171 
Due after five years through ten years139,202 125,714 35,012 32,414 
Due after ten years193,104 169,511 50,312 49,462 
Residential mortgage backed securities:
Government agency mortgage backed securities386,654 374,926 191,650 172,847 
Government agency collateralized mortgage obligations363,095 339,359 408,364 336,883 
Commercial mortgage backed securities:
Government agency mortgage backed securities16,966 14,562 6,010 5,544 
Government agency collateralized mortgage obligations43,966 37,640 137,474 118,442 
Other debt securities— — 6,518 6,035 
$1,150,563 $1,068,968 $878,445 $764,844 
Schedule of Gross Unrealized Losses and Fair Value of Available-for-Sale Securities
The following tables present the age of gross unrealized losses and fair value by investment category for which an allowance for credit losses has not been recorded as of the dates presented:
 
 Less than 12 Months12 Months or MoreTotal
 #Fair
Value		Unrealized
Losses		#Fair
Value		Unrealized
Losses		#Fair
Value		Unrealized
Losses
Available for Sale:
September 30, 2024
Obligations of states and political subdivisions— $— $— 7$13,278 $(1,878)7$13,278 $(1,878)
Residential mortgage backed securities:
Government agency mortgage backed securities2 3,914 (61)34152,229 (19,116)36156,143 (19,177)
Government agency collateralized mortgage obligations— — — 37336,883 (71,481)37336,883 (71,481)
Commercial mortgage backed securities:
Government agency mortgage backed securities—— — 25,543 (466)25,543 (466)
Government agency collateralized mortgage obligations—— — 25107,597 (19,224)25107,597 (19,224)
Other debt securities— — — 1834,337 (2,676)1834,337 (2,676)
Total2$3,914 $(61)123$649,867 $(114,841)125$653,781 $(114,902)
December 31, 2023
Obligations of states and political subdivisions3$2,914 $(2)9$15,198 $(1,881)12$18,112 $(1,883)
Residential mortgage backed securities:
Government agency mortgage backed securities1806 (25)35166,963 (24,943)36167,769 (24,968)
Government agency collateralized mortgage obligations— — — 37354,574 (85,883)37354,574 (85,883)
Commercial mortgage backed securities:
Government agency mortgage backed securities— — — 25,392 (637)25,392 (637)
Government agency collateralized mortgage obligations— — — 25108,575 (21,965)25108,575 (21,965)
Other debt securities23,099 (195)1935,072 (4,263)2138,171 (4,458)
Total6$6,819 $(222)127$685,774 $(139,572)133$692,593 $(139,794)
Schedule of Gross Unrealized Losses and Fair Value of Held-to-Maturity Securities
 Less than 12 Months12 Months or MoreTotal
 #Fair
Value		Unrealized
Losses		#Fair
Value		Unrealized
Losses		#Fair
Value		Unrealized
Losses
Held to Maturity:
September 30, 2024
Obligations of states and political subdivisions1$2,370 $(10)127$246,559 $(34,851)128$248,929 $(34,861)
Residential mortgage backed securities:
Government agency mortgage backed securities—— — 69357,350 (11,742)69357,350 (11,742)
Government agency collateralized mortgage obligations—— — 18339,359 (23,736)18339,359 (23,736)
Commercial mortgage backed securities:
Government agency mortgage backed securities—— — 114,562 (2,404)114,562 (2,404)
Government agency collateralized mortgage obligations—— — 937,640 (6,326)937,640 (6,326)
Other debt securities—— — 1051,854 (2,578)1051,854 (2,578)
Total1$2,370 $(10)234$1,047,324 $(81,637)235$1,049,694 $(81,647)
December 31, 2023
Obligations of states and political subdivisions2$2,807 $(25)126$249,995 $(33,663)128$252,802 $(33,688)
Residential mortgage backed securities:
Government agency mortgage backed securities—— — 70405,950 (20,314)70405,950 (20,314)
Government agency collateralized mortgage obligations—— — 18355,538 (31,670)18355,538 (31,670)
Commercial mortgage backed securities:
Government agency mortgage backed securities—— — 114,011 (2,972)114,011 (2,972)
Government agency collateralized mortgage obligations—— — 937,537 (6,977)937,537 (6,977)
Other debt securities—— — 1054,254 (4,119)1054,254 (4,119)
Total2$2,807 $(25)234$1,117,285 $(99,715)236$1,120,092 $(99,740)