Investment Securities and Other Investments - Summary of Unrealized Losses (Detail) $ in Thousands	Mar. 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	221	221
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 40,426	$ 93,180
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(2,344)	(8,561)
Available-for-sale Securities, Fair Value, 12 Months or Greater	296,554	242,340
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(51,357)	(50,288)
Fair Value, Total	336,980	335,520
Unrealized Losses, Total	$ (53,701)	$ (58,849)
State and Municipal [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number of Securities | Security	80	82
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 3,265	$ 18,252
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(92)	(2,178)
Available-for-sale Securities, Fair Value, 12 Months or Greater	46,807	31,530
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(7,655)	(6,847)
Fair Value, Total	50,072	49,782
Unrealized Losses, Total	$ (7,747)	$ (9,025)
U.S. Treasury and Agencies [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number of Securities | Security	26	28
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 4,885	$ 9,904
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(115)	(1,039)
Available-for-sale Securities, Fair Value, 12 Months or Greater	57,264	56,686
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(9,783)	(11,872)
Fair Value, Total	62,149	66,590
Unrealized Losses, Total	$ (9,898)	$ (12,911)
Mortgage Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number of Securities | Security	81	78
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 11,475	$ 39,006
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(408)	(3,061)
Available-for-sale Securities, Fair Value, 12 Months or Greater	179,759	148,449
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(32,053)	(30,669)
Fair Value, Total	191,234	187,455
Unrealized Losses, Total	$ (32,461)	$ (33,730)
Corporate Bonds [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number of Securities | Security	34	33
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 20,801	$ 26,018
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(1,729)	(2,283)
Available-for-sale Securities, Fair Value, 12 Months or Greater	12,724	5,675
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(1,866)	(900)
Fair Value, Total	33,525	31,693
Unrealized Losses, Total	$ (3,595)	$ (3,183)