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Investment Securities and Other Investments - Summary of Unrealized Losses (Detail) $ in Thousands | Jun. 30, 2024 USD ($) Security | Dec. 31, 2023 USD ($) Security
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Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |
Number of Securities | Security | 219 | 219
Available-for-sale Securities, Fair Value, Less Than 12 Months | $ 8,410 | $ 15,785
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months | (710) | (885)
Available-for-sale Securities, Fair Value, 12 Months or Greater | 297,991 | 300,674
Available-for-sale Securities, Unrealized Losses, 12 months or Greater | (56,784) | (57,700)
Fair Value, Total | 306,401 | 316,459
Unrealized Losses, Total | $ (57,494) | $ (58,585)
State and Municipal [Member] |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |
Number of Securities | Security | 70 | 65
Available-for-sale Securities, Fair Value, Less Than 12 Months | $ 1,282 | $ 536
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months | (13) | (9)
Available-for-sale Securities, Fair Value, 12 Months or Greater | 41,446 | 41,118
Available-for-sale Securities, Unrealized Losses, 12 months or Greater | (7,340) | (7,348)
Fair Value, Total | 42,728 | 41,654
Unrealized Losses, Total | $ (7,353) | $ (7,357)
U.S. Treasury and Agencies [Member] |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |
Number of Securities | Security | 29 | 29
Available-for-sale Securities, Fair Value, Less Than 12 Months | $ 275 | $ 283
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months | (1) | (1)
Available-for-sale Securities, Fair Value, 12 Months or Greater | 68,619 | 68,399
Available-for-sale Securities, Unrealized Losses, 12 months or Greater | (10,738) | (10,984)
Fair Value, Total | 68,894 | 68,682
Unrealized Losses, Total | $ (10,739) | $ (10,985)
Mortgage Backed Securities [Member] |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |
Number of Securities | Security | 80 | 86
Available-for-sale Securities, Fair Value, Less Than 12 Months |  | $ 7,497
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months |  | (45)
Available-for-sale Securities, Fair Value, 12 Months or Greater | $ 163,113 | 169,474
Available-for-sale Securities, Unrealized Losses, 12 months or Greater | (34,929) | (35,199)
Fair Value, Total | 163,113 | 176,971
Unrealized Losses, Total | $ (34,929) | $ (35,244)
Corporate Bonds [Member] |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |
Number of Securities | Security | 40 | 39
Available-for-sale Securities, Fair Value, Less Than 12 Months | $ 6,853 | $ 7,469
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months | (696) | (830)
Available-for-sale Securities, Fair Value, 12 Months or Greater | 24,813 | 21,683
Available-for-sale Securities, Unrealized Losses, 12 months or Greater | (3,777) | (4,169)
Fair Value, Total | 31,666 | 29,152
Unrealized Losses, Total | $ (4,473) | $ (4,999)

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