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Derivatives - Summary of Interest Rate Swap Transactions (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Derivatives Fair Value [Line Items]
Swap assets	$ 18,448	$ 11,072
Accrued Liabilities and Other Liabilities	18,448	11,072
Long [Member] | Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Interest Rate Swaps With Loan Customers In An Asset Position Notional Amount		173,491
Fair Value Of Interest Rate Swaps With Loan Customers In An Asset Position		11,072
Long [Member] | Financial Institutions [Member]
Derivatives Fair Value [Line Items]
Counterparty Positions With Financial Institutions In A Liability Position Notional Amount		244,818
Fair Value Of Counterparty Positions With Financial Institutions In A Liability Position		9,444
Short [Member] | Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Interest Rate Swaps With Loan Customers In A Liability Position Notional Amount	215,383	71,327
Fair Value Of Interest Rate Swaps With Loan Customers In A Liability Position	18,448	$ 1,628
Short [Member] | Financial Institutions [Member]
Derivatives Fair Value [Line Items]
Counterparty Positions With Financial Institutions In An Asset Position Notional Amount	215,383
Fair Value Of Counterparty Positions With Financial Institutions In An Asset Position	$ 18,448

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