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Significant Accounting Policies and Basis of Presentation - Narrative (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Average reserve balances required to be maintained with federal reserve bank	$ 0.0	$ 0.0
Contractual payment of principal duration (days)	90 days
Contractual terms for loans (months)	6 months
Maximum loan to value ratio	80.00%
Threshold period past due, writeoff	120 days
Percentage of tax position that will be realized or sustained upon examination	50.00%

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- Definition

Average reserve balances required to be maintained with federal reserve bank

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Discontinued period of principal or interest payment of contractual payment.

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- Definition

Financing Receivable Impairment Modification Minimum Period

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- Definition

Income Taxes Examination Likelihood Of Realization On Settlement Percentage

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- Definition

Maximum loan to value ratio.

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- Definition

Threshold period for when financing receivable is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-14

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