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Securitized Debt at Amortized Cost and Securitized Debt at Fair Value - Additional Information (Details)	9 Months Ended
	Sep. 30, 2025
Minimum
Securitization Financial Asset For Which Transfer Is Accounted As Sale [Line Items]
Securities redemption when principal balance is less than a certain percentage	10.00%
Maximum
Securitization Financial Asset For Which Transfer Is Accounted As Sale [Line Items]
Securities redemption when principal balance is less than a certain percentage	30.00%

X

- 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/2003/role/disclosureRef
-Topic 860
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Redemption of securities at time of principal balance met certain range, percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	vel_
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Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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Period Type: