Debt Instrument, Renewal Term

No definition available.

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- Definition

Proceeds from Collateralized Borrowings

+ References

No definition available.

+ Details

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Namespace Prefix:	dfdv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Repayment of Collateralized Borrowings

+ References

No definition available.

+ Details

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Namespace Prefix:	dfdv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477734/942-470-50-3

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Period between issuance and maturity of debt instrument, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- 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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Aggregate amount of interest expense on all borrowings.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dfdv_DigitalAssetFinancingArrangementsMember
Namespace Prefix:
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- Details

Name:	us-gaap_DebtInstrumentAxis=dfdv_CollateralizedFinancingArrangementsMember
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Period Type:

- Details

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DERIVATIVES - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	Jul. 25, 2025	Sep. 30, 2026	Sep. 30, 2026	Feb. 23, 2026	Dec. 31, 2025
Derivative [Line Items]
Total short-term debt		$ 0	$ 0		$ 107
Digital asset financing arrangements \| Collateralized Financing Arrangements
Derivative [Line Items]
Interest expense, borrowings		1,000	2,200
Proceeds received from collateralized financing agreements		215,800
Repayment of collateralized financing agreements		68,600
Collateral		225,900	225,900
Digital asset financing arrangements \| Master Loan Agreement
Derivative [Line Items]
Debt instrument term	1 year
Debt renewal term	1 year
Repayment of short-term debt		12,400
Total short-term debt				$ 4,000
Interest expense, borrowings		$ 300	$ 1,100