Securitizations, Net - Additional Information (Detail) $ in Billions	6 Months Ended	110 Months Ended
Jun. 30, 2020 USD ($) Securities	Jun. 30, 2020 USD ($)
Securitization Financial Asset For Which Transfer Is Accounted As Sale [Line Items]
Number of securitizations \| Securities	14
Securitization loans	$ 3.1	$ 3.1
Issuing of securities to third parties		$ 2.9
Minimum
Securitization Financial Asset For Which Transfer Is Accounted As Sale [Line Items]
Securities redemption when principal balance is less than a certain percentage	5.00%
Maturity dates of the securities	2044-09
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%
Maturity dates of the securities	2050-06

This is the principal amount outstanding for securitized loans only (across all types of loans).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719

+ Details

Name:	us-gaap_PrincipalAmountOutstandingOnLoansSecuritized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from issuance of preferred stocks by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfTrustPreferredSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

No definition available.

+ Details

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

- Definition

Maturity dates of the securities.

+ References

No definition available.

+ Details

Name:	vel_MaturityDatesOfTheSecurities
Namespace Prefix:	vel_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of securitizations.

+ References

No definition available.

+ Details

Name:	vel_NumberOfSecuritizations
Namespace Prefix:	vel_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	vel_RedemptionOfSecuritiesAtTimeOfPrincipalBalanceMetCertainRangePercentage
Namespace Prefix:	vel_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: