Investment Securities and Other Investments - Summary of Unrealized Losses (Detail) $ in Thousands	Dec. 31, 2021 USD ($) Security	Dec. 31, 2020 USD ($) Security
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number Of Securities \| Security	125	36
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 285,666	$ 29,308
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(6,714)	(231)
Available-for-sale Securities, Fair Value, 12 Months or Greater	1,539	10,547
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(8)	(378)
Fair Value, Total	287,205	39,855
Unrealized Losses, Total	$ (6,722)	$ (609)
State and Municipal [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number Of Securities \| Security	38	6
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 27,905	$ 3,111
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(530)	(68)
Available-for-sale Securities, Fair Value, 12 Months or Greater	0	0
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	0	0
Fair Value, Total	27,905	3,111
Unrealized Losses, Total	$ (530)	$ (68)
U.S. Treasury and Agencies [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number Of Securities \| Security	22	1
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 64,067	$ 2,410
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(1,614)	(91)
Available-for-sale Securities, Fair Value, 12 Months or Greater	0	0
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	0	0
Fair Value, Total	64,067	2,410
Unrealized Losses, Total	$ (1,614)	$ (91)
Mortgage Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number Of Securities \| Security	54	22
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 186,924	$ 20,545
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(4,257)	(65)
Available-for-sale Securities, Fair Value, 12 Months or Greater	543	8,592
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(4)	(333)
Fair Value, Total	187,467	29,137
Unrealized Losses, Total	$ (4,261)	$ (398)
Corporate Bonds [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Number Of Securities \| Security	11	7
Available-for-sale Securities, Fair Value, Less Than 12 Months	$ 6,770	$ 3,242
Available-for-sale Securities, Unrealized Losses, Less Than 12 Months	(313)	(7)
Available-for-sale Securities, Fair Value, 12 Months or Greater	996	1,955
Available-for-sale Securities, Unrealized Losses, 12 months or Greater	(4)	(45)
Fair Value, Total	7,766	5,197
Unrealized Losses, Total	$ (317)	$ (52)

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