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Lease Obligations Other Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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May 31, 2014 | Jun. 01, 2013 | Jun. 02, 2012
Commitments and Contingencies Disclosure [Line Items] |  |  |
Rent expense from continuing operations | $ 1.5 | $ 1.6 | $ 1.6

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- Details
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Namespace Prefix: | rell_
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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Balance Type: | debit
Period Type: | duration