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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
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)