Derivatives - Summary of Interest Rate Swap Transactions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivatives Fair Value [Line Items]
Derivative Asset	$ 12,481	$ 16,579	$ 12,481
Accrued Liabilities and Other Liabilities	12,481	16,579
Long [Member] | Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Interest Rate Swaps With Loan Customers In An Asset Position Notional Amount	44,773	6,980
Fair Value Of Interest Rate Swaps With Loan Customers In An Asset Position	2,114	269
Short [Member] | Financial Institutions Asset Position [Member]
Derivatives Fair Value [Line Items]
Counterparty Positions With Financial Institutions In An Asset Position Notional Amount	228,873	212,570
Fair Value Of Counterparty Positions With Financial Institutions In An Asset Position	10,367	16,310
Short [Member] | Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Interest Rate Swaps With Loan Customers In A Liability Position Notional Amount	184,100	205,590
Fair Value Of Interest Rate Swaps With Loan Customers In A Liability Position	$ 12,481	$ 16,579