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BUSINESS DESCRIPTION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Covid-19 Impact (Details) | Jun. 30, 2020
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Franchise |
Segment Reporting Information [Line Items] |
Number of stores open | 87.00%
Company-owned |
Segment Reporting Information [Line Items] |
Number of stores open | 54.00%

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- Definition Number Of Stores, As A Percent + References No definition available. + Details
Name: | rgs_NumberOfStoresAsAPercent
Namespace Prefix: | rgs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

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- Details
Name: | us-gaap_ReportingUnitAxis=rgs_FranchiseSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReportingUnitAxis=rgs_CompanyownedSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |