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Investment Securities - Schedule of the Fair Values of Securities with Unrealized Losses (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Marketable Securities [Line Items] |  |
AFS, Less than 12 months, Estimated Fair Value | $ 97,255 | $ 82,743
AFS, Less than 12 Months, Unrealized Losses | 2,193 | 675
AFS, 12 months or more, Estimated Fair Value | 401,004 | 541,391
AFS, 12 months or more, Unrealized Losses | 57,512 | 57,129
AFS, Total Estimated Fair Value | 498,259 | 624,134
AFS, Total Unrealized Losses | 59,705 | 57,804
State and political subdivisions |  |
Marketable Securities [Line Items] |  |
AFS, Less than 12 months, Estimated Fair Value | 4,082 | 63,198
AFS, Less than 12 Months, Unrealized Losses | 8 | 220
AFS, 12 months or more, Estimated Fair Value | 163,893 | 152,854
AFS, 12 months or more, Unrealized Losses | 16,964 | 16,046
AFS, Total Estimated Fair Value | 167,975 | 216,052
AFS, Total Unrealized Losses | 16,972 | 16,266
Mortgage-backed securities issued or guaranteed by U.S. government agencies or sponsored enterprises |  |
Marketable Securities [Line Items] |  |
AFS, Less than 12 months, Estimated Fair Value | 85,272 | 0
AFS, Less than 12 Months, Unrealized Losses | 2,086 | 0
AFS, 12 months or more, Estimated Fair Value | 139,676 | 157,799
AFS, 12 months or more, Unrealized Losses | 32,009 | 30,508
AFS, Total Estimated Fair Value | 224,948 | 157,799
AFS, Total Unrealized Losses | 34,095 | 30,508
Corporate bonds |  |
Marketable Securities [Line Items] |  |
AFS, Less than 12 months, Estimated Fair Value | 7,901 | 19,545
AFS, Less than 12 Months, Unrealized Losses | 99 | 455
AFS, 12 months or more, Estimated Fair Value | 66,860 | 82,795
AFS, 12 months or more, Unrealized Losses | 7,960 | 8,314
AFS, Total Estimated Fair Value | 74,761 | 102,340
AFS, Total Unrealized Losses | 8,059 | 8,769
Treasury securities |  |
Marketable Securities [Line Items] |  |
AFS, Less than 12 months, Estimated Fair Value |  | 0
AFS, Less than 12 Months, Unrealized Losses |  | 0
AFS, 12 months or more, Estimated Fair Value |  | 108,721
AFS, 12 months or more, Unrealized Losses |  | 1,115
AFS, Total Estimated Fair Value |  | 108,721
AFS, Total Unrealized Losses |  | 1,115
Asset backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises |  |
Marketable Securities [Line Items] |  |
AFS, Less than 12 months, Estimated Fair Value | 0 | 0
AFS, Less than 12 Months, Unrealized Losses | 0 | 0
AFS, 12 months or more, Estimated Fair Value | 30,575 | 39,222
AFS, 12 months or more, Unrealized Losses | 579 | 1,146
AFS, Total Estimated Fair Value | 30,575 | 39,222
AFS, Total Unrealized Losses | $ 579 | $ 1,146

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