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Investment Securities and Other Investments - Summary of Unrealized Losses (Detail) $ in Thousands | Dec. 31, 2023 USD ($) Security | Dec. 31, 2022 USD ($) Security
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Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |
Number Of Securities | Security | 219 | 221
Available-for-sale Securities, Fair Value, Less Than 12 Months | $ 15,785 | $ 93,180
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months | (885) | (8,561)
Available-for-sale Securities, Fair Value, 12 Months or Greater | 300,674 | 242,340
Available-for-sale Securities, Unrealized Losses, 12 months or Greater | (57,700) | (50,288)
Fair Value, Total | 316,459 | 335,520
Unrealized Losses, Total | $ (58,585) | $ (58,849)
State and Municipal [Member] |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |
Number Of Securities | Security | 65 | 82
Available-for-sale Securities, Fair Value, Less Than 12 Months | $ 536 | $ 18,252
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months | (9) | (2,178)
Available-for-sale Securities, Fair Value, 12 Months or Greater | 41,118 | 31,530
Available-for-sale Securities, Unrealized Losses, 12 months or Greater | (7,348) | (6,847)
Fair Value, Total | 41,654 | 49,782
Unrealized Losses, Total | $ (7,357) | $ (9,025)
U.S. Treasury and Agencies [Member] |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |
Number Of Securities | Security | 29 | 28
Available-for-sale Securities, Fair Value, Less Than 12 Months | $ 283 | $ 9,904
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months | (1) | (1,039)
Available-for-sale Securities, Fair Value, 12 Months or Greater | 68,399 | 56,686
Available-for-sale Securities, Unrealized Losses, 12 months or Greater | (10,984) | (11,872)
Fair Value, Total | 68,682 | 66,590
Unrealized Losses, Total | $ (10,985) | $ (12,911)
Mortgage Backed Securities [Member] |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |
Number Of Securities | Security | 86 | 78
Available-for-sale Securities, Fair Value, Less Than 12 Months | $ 7,497 | $ 39,006
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months | (45) | (3,061)
Available-for-sale Securities, Fair Value, 12 Months or Greater | 169,474 | 148,449
Available-for-sale Securities, Unrealized Losses, 12 months or Greater | (35,199) | (30,669)
Fair Value, Total | 176,971 | 187,455
Unrealized Losses, Total | $ (35,244) | $ (33,730)
Corporate Bonds [Member] |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |
Number Of Securities | Security | 39 | 33
Available-for-sale Securities, Fair Value, Less Than 12 Months | $ 7,469 | $ 26,018
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months | (830) | (2,283)
Available-for-sale Securities, Fair Value, 12 Months or Greater | 21,683 | 5,675
Available-for-sale Securities, Unrealized Losses, 12 months or Greater | (4,169) | (900)
Fair Value, Total | 29,152 | 31,693
Unrealized Losses, Total | $ (4,999) | $ (3,183)

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