Debt - Additional Information (Short Term Debt) (Detail) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Short-term Debt [Line Items]
Securities sold under agreements to repurchase	$ 28,800,000	$ 106,500,000
Securities Sold under Agreements to Repurchase \| Mortgage Backed Securities, Other
Short-term Debt [Line Items]
Securities sold under agreements to repurchase	25,600,000
Securities Sold under Agreements to Repurchase \| Collateralized mortgage obligations, residential
Short-term Debt [Line Items]
Securities sold under agreements to repurchase	13,800,000
Federal Home Loan Bank of New York
Short-term Debt [Line Items]
Overnight borrowings	700,000,000
Line of Credit
Short-term Debt [Line Items]
Overnight federal funds borrowed	0	0
Overnight federal funds lines available for borrow	250,000,000
Line of Credit \| Federal Home Loan Bank of New York
Short-term Debt [Line Items]
Overnight borrowings		0
Federal Reserve Bank of New York \| Line of Credit
Short-term Debt [Line Items]
Borrowings with the Federal Reserve Bank	$ 0	$ 0

Federal Funds Available For Borrowing

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- Definition

Federal Reserve Bank, Advances, Amount Of Advances By Branch

+ References

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- Definition

Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

+ References

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- Definition

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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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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