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Retirement Plan (Details Narrative) (Altruis Benefit Consultants, Inc.) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Altruis Benefit Consultants Inc [Member] |  |
Employer contribution expense | $ 2,449 | $ 8,275

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- Definition Employer contribution expense. + References No definition available. + Details
Name: | RELI_EmployerContributionExpense
Namespace Prefix: | RELI_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=RELI_AltruisBenefitConsultantsIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |