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SCHEDULE OF FAIR VALUE MEASUREMENTS (Details) - Fair Value, Inputs, Level 3 [Member]	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Valuation technique	Discounted cash flow	Discounted cash flow
Significant unobservable input	Projected revenue and probability of achievement	Projected revenue and probability of achievement

X

- Definition

Significant unobservable input.

+ References

No definition available.

+ Details

Name:	RELI_SignificantUnobservableInput
Namespace Prefix:	RELI_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Valuation technique.

+ References

No definition available.

+ Details

Name:	RELI_ValuationTechnique
Namespace Prefix:	RELI_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: