BENEFIT PLANS - Stock Purchase Plan (Details) $ in Millions	12 Months Ended
Jun. 30, 2021 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative employer contribution to plan	$ 11.2
Employee Stock \| Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer contribution as percent of stock purchase price	15.00%
Employer contribution to plan, maximum	$ 11.8

The amount of cumulative contributions by the employer to a stock-based award plan as of the balance sheet date.

No definition available.

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Namespace Prefix:	rgs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The maximum amount of contributions by the employer to a stock-based award plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	rgs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Discount rate from fair value on purchase date that participants pay for shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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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

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- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_EmployeeStockMember
Namespace Prefix:
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Balance Type:
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- Details

Name:	us-gaap_PlanNameAxis=rgs_StockPurchasePlanMember
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