Derivative Financial Instruments (Counterparty Credit Risk Narrative) (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Derivative [Line Items]
Derivative instrument asset, Amount Offset	$ 185,968	$ 19,272
Maximum exposure	200
Debit (credit) valuation adjustment	9,500	$ (400)
Cash and Due from Banks
Derivative [Line Items]
Derivative, Collateral, Right to Reclaim Cash	186,800
Valuation, Market Approach
Derivative [Line Items]
Maximum exposure	85,900
CME
Derivative [Line Items]
Derivative instrument asset, Amount Offset	$ 64,800

Maximum potential amount of future undiscounted payments that could be required under the credit derivative, before reduction for potential recoveries under recourse or collateralization provisions.

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- Definition

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Derivative Credit Risk Valuation Adjustment, Derivative Asset (Liability)

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