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Securities - Company's Book Value of Pledged Debt Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2022
Financial Instruments Owned and Pledged as Collateral [Line Items]
Book value of pledged securities			$ 220,000
Asset Pledged as Collateral without Right [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Book value of pledged securities	$ 918,523	$ 591,324

X

- Definition

Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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- Definition

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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