Amount of cash outflow for principal payment on finance lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 5
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(1)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980

+ Details

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

- Definition

Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- 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

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

- Definition

Lessee, Finance Lease, Number of Contracts

+ References

No definition available.

+ Details

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Namespace Prefix:	vtnr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=vtnr_FinanceLeaseOriginatedApril22020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=vtnr_FinanceLeaseOriginatedJuly282020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=vtnr_FinanceLeaseOriginatedMay222020Member
Namespace Prefix:
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LINE OF CREDIT AND LONG-TERM DEBT - Finance Leases (Details)				3 Months Ended
	Jul. 28, 2020 USD ($)	May 22, 2020 USD ($) contract	Apr. 02, 2020 USD ($) contract	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)
Lessee, Lease, Description
Finance lease payment				$ 122,052	$ 53,119
Secured debt \| AVT Equipment Lease-Ohio
Lessee, Lease, Description
Number of finance leases assumed \| contract			1
Finance lease payment			$ 9,322
Finance lease term			3 years
Secured debt \| Finance Lease Originated July 28, 2020
Lessee, Lease, Description
Finance lease payment	$ 3,545
Finance lease term	3 years
Secured debt \| AVT Equipment Lease-HH
Lessee, Lease, Description
Number of finance leases assumed \| contract		1
Finance lease payment		$ 15,078
Finance lease term		3 years