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Subsequent Events - Additional Information (Detail) (Subsequent Event, WVS-Technology, USD $) In Millions, unless otherwise specified | Jul. 05, 2013
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Subsequent Event | WVS-Technology |
Subsequent Event [Line Items] |
Purchase price of assets acquired | $ 1.0

X
- Definition Business Acquisition Purchase Price + References No definition available. + Details
Name: | rell_BusinessAcquisitionPurchasePrice
Namespace Prefix: | rell_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration