The total estimated amount of the NOL carryback tax benefit.

No definition available.

Name:	relv_EstimatedTaxBenefitNolCarryback
Namespace Prefix:	relv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of foreign tax settlement recognized in the period.

+ References

No definition available.

+ Details

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

- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

+ Details

Name:	us-gaap_EffectiveIncomeTaxRateContinuingOperations
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Details

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

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

Note 6 - Income Taxes (Details Textual) - USD ($)	9 Months Ended
Note 6 - Income Taxes (Details Textual) - USD ($)	Sep. 30, 2020	Sep. 30, 2019	Mar. 31, 2020	Dec. 31, 2019
Income Tax Expense (Benefit), Total			$ 225,000
Effective Income Tax Rate Reconciliation, Percent, Total	(26.50%)	73.90%
Foreign Tax Authority [Member]
Foreign Tax Settlement		$ 25,000
Foreign Tax Authority [Member] \| Tax Year 2004 [Member]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority				$ 84,000