Derivative Financial Instruments (Counterparty Credit Risk Narrative) (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Derivative instrument asset, Amount Offset	$ 54,206	$ 19,272
Maximum exposure	44,600
Debit (credit) valuation adjustment	3,300	$ (400)
Cash and Due from Banks
Derivative [Line Items]
Derivative, Collateral, Right to Reclaim Cash	55,200
Valuation, Market Approach
Derivative [Line Items]
Maximum exposure	47,800
CME
Derivative [Line Items]
Derivative instrument asset, Amount Offset	$ 83,900

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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-SubTopic 10
-Section 50
-Paragraph 4K
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- Definition

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

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- Definition

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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