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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Oct. 31, 2023	Sep. 30, 2023	Jan. 31, 2023	Dec. 31, 2022
Stoffers v. Dave Inc. [Member]
Commitments And Contingencies [Line Items]
Loss contingency lawsuit filing date		September 16, 2020
Martinsek v. Dave Inc. [Member]
Commitments And Contingencies [Line Items]
Loss contingency lawsuit filing date		January 9, 2020
Legal Settlement Expense [Member]
Commitments And Contingencies [Line Items]
Loss contingency estimate of possible loss		$ 3.1	$ 6.0	$ 3.1
Legal Settlement Expense [Member] | July 2020 Data Breach [Member]
Commitments And Contingencies [Line Items]
Loss contingency estimate of possible loss		$ 4.3
Subsequent Events [Member] | Legal Settlement Expense [Member] | July 2020 Data Breach [Member]
Commitments And Contingencies [Line Items]
Legal settlement expense	$ 3.3

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- Definition

Commitments and contingencies [Line items].

+ References

No definition available.

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

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-Topic 460
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- Definition

States the date the complaint was formally filed in a court of law, in arbitration or mediation.

+ References

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The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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