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Assets and Liabilities Classified as Discontinued Operations (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 01, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payable to arrow for transition services	$ 1.8
Offset receivables for transition services	$ 1.4

X

- Definition

Disposal group including discontinued operation accrued liabilities related to transition fee.

+ References

No definition available.

+ Details

Name:	rell_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilitiesRelatedToTransitionFee
Namespace Prefix:	rell_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Offset receivables for transition services.

+ References

No definition available.

+ Details

Name:	rell_OffsetReceivablesForTransitionServices
Namespace Prefix:	rell_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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