Investment Securities and Other Investments - Summary of Unrealized Losses (Detail) $ in Thousands	Jun. 30, 2025 USD ($) Security	Dec. 31, 2024 USD ($) Security
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number of Securities \| Security	221	226
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 19,160	$ 17,480
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(62)	(170)
Available-for-sale Securities, Fair Value, 12 Months or Greater	290,696	293,439
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(50,075)	(55,364)
Fair Value, Total	309,856	310,919
Unrealized Losses, Total	$ (50,137)	$ (55,534)
State and Municipal [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number of Securities \| Security	67	70
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 1,286	$ 2,040
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(7)	(42)
Available-for-sale Securities, Fair Value, 12 Months or Greater	41,221	40,531
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(6,389)	(7,254)
Fair Value, Total	42,507	42,571
Unrealized Losses, Total	$ (6,396)	$ (7,296)
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	$ 0	$ 0
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	0	0
Available-for-sale Securities, Fair Value, 12 Months or Greater	70,987	69,453
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(8,094)	(9,975)
Fair Value, Total	70,987	69,453
Unrealized Losses, Total	$ (8,094)	$ (9,975)
Mortgage Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number of Securities \| Security	88	85
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 17,874	$ 11,637
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(55)	(107)
Available-for-sale Securities, Fair Value, 12 Months or Greater	147,641	152,802
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(33,115)	(34,908)
Fair Value, Total	165,515	164,439
Unrealized Losses, Total	$ (33,170)	$ (35,015)
Corporate Bonds [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number of Securities \| Security	37	42
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 0	$ 3,803
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	0	(21)
Available-for-sale Securities, Fair Value, 12 Months or Greater	30,847	30,653
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(2,477)	(3,227)
Fair Value, Total	30,847	34,456
Unrealized Losses, Total	$ (2,477)	$ (3,248)

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