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Securities (Tables)
 3 Months Ended
Mar. 31, 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 March 31, 2024 or December 31, 2023.
 
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
March 31, 2024
Obligations of states and political subdivisions$21,669 $88 $(1,994)$19,763 
Residential mortgage backed securities:
Government agency mortgage backed securities198,253 99 (26,073)172,279 
Government agency collateralized mortgage obligations431,344 — (90,453)340,891 
Commercial mortgage backed securities:
Government agency mortgage backed securities6,023 — (679)5,344 
Government agency collateralized mortgage obligations137,524 — (22,702)114,822 
Other debt securities115,235 583 (4,431)111,387 
$910,048 $770 $(146,332)$764,486 
 
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
March 31, 2024
Obligations of states and political subdivisions$287,255 $51 $(37,550)$249,756 
Residential mortgage backed securities
Government agency mortgage backed securities414,485 — (24,465)390,020 
Government agency collateralized mortgage obligations379,244 — (36,971)342,273 
Commercial mortgage backed securities:
Government agency mortgage backed securities16,977 — (3,056)13,921 
Government agency collateralized mortgage obligations44,360 — (7,411)36,949 
Other debt securities56,822 — (4,656)52,166 
$1,199,143 $51 $(114,109)$1,085,085 
Allowance for credit losses - held to maturity securities(32)
Held to maturity securities, net of allowance for credit losses$1,199,111 
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 were as follows for the three months ended March 31, 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 first quarter of 2023.
Carrying Value Immediately Prior to SaleNet ProceedsImpairment Recognized in December 2023
Three months ended March 31, 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)
Schedule of Amortized Cost and Fair Value of Securities by Contractual Maturity
The amortized cost and fair value of securities at March 31, 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$— $— $2,274 $2,231 
Due after one year through five years7,705 7,249 35,762 36,003 
Due after five years through ten years112,024 99,428 38,877 34,712 
Due after ten years224,348 195,245 52,283 51,365 
Residential mortgage backed securities:
Government agency mortgage backed securities414,485 390,020 198,253 172,279 
Government agency collateralized mortgage obligations379,244 342,273 431,344 340,891 
Commercial mortgage backed securities:
Government agency mortgage backed securities16,977 13,921 6,023 5,344 
Government agency collateralized mortgage obligations44,360 36,949 137,524 114,822 
Other debt securities— — 7,708 6,839 
$1,199,143 $1,085,085 $910,048 $764,486 
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:
March 31, 2024
Obligations of states and political subdivisions— $— $— 7$13,253 $(1,994)7$13,253 $(1,994)
Residential mortgage backed securities:
Government agency mortgage backed securities4 6,720 (45)36161,215 (26,028)40167,935 (26,073)
Government agency collateralized mortgage obligations— — — 37340,806 (90,453)37340,806 (90,453)
Commercial mortgage backed securities:
Government agency mortgage backed securities—— — 25,344 (679)25,344 (679)
Government agency collateralized mortgage obligations27,694 (87)25107,128 (22,615)27114,822 (22,702)
Other debt securities— — — 2137,296 (4,431)2137,296 (4,431)
Total6$14,414 $(132)128$665,042 $(146,200)134$679,456 $(146,332)
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:
March 31, 2024
Obligations of states and political subdivisions1$2,372 $(16)127$245,670 $(37,534)128$248,042 $(37,550)
Residential mortgage backed securities:
Government agency mortgage backed securities—— — 70390,021 (24,465)70390,021 (24,465)
Government agency collateralized mortgage obligations—— — 18342,272 (36,971)18342,272 (36,971)
Commercial mortgage backed securities:
Government agency mortgage backed securities—— — 113,921 (3,056)113,921 (3,056)
Government agency collateralized mortgage obligations—— — 936,949 (7,411)936,949 (7,411)
Other debt securities—— — 1052,167 (4,656)1052,167 (4,656)
Total1$2,372 $(16)235$1,081,000 $(114,093)236$1,083,372 $(114,109)
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)