The percentage rate of Class A dividends as computed for Class B dividend limitation.

No definition available.

Name:	rell_LimitOfCashDividendsClassBCommonStock
Namespace Prefix:	rell_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of votes per share.

+ References

No definition available.

+ Details

Name:	rell_NumberOfVotesPerShare
Namespace Prefix:	rell_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Schedule of earning per share.

+ References

No definition available.

+ Details

Name:	rell_ScheduleOfEarningPerShareLineItems
Namespace Prefix:	rell_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482662/260-10-50-1

+ Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(16)(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_CommonStockSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Calculation of Earnings Per Share - Additional Information (Details)	3 Months Ended		9 Months Ended
	Mar. 02, 2024 shares	Feb. 25, 2023 shares	Mar. 02, 2024 Vote shares	Feb. 25, 2023 shares
Schedule Of Earning Per Share [Line Items]
Limit of cash dividends Class B common stock (percent)			90.00%
Common stock options anti-dilutive	0	0	0	0
Common Stock
Schedule Of Earning Per Share [Line Items]
Common stock shares, authorized	17,000,000		17,000,000
Common Class B
Schedule Of Earning Per Share [Line Items]
Common stock shares, authorized	3,000,000		3,000,000
Number of votes per share \| Vote			10