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Income Taxes - Additional Information (Detail) (USD $) | 6 Months Ended
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Nov. 29, 2014 | Nov. 30, 2013
Income Tax [Line Items] |  |
Effective income tax rate from continuing operation | 43.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 18.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Document Fiscal Year Focus | 2015 |
Federal statutory rate | 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate |
Description of tax years open for examination in foreign tax jurisdictions | Our primary foreign tax jurisdictions are Germany and the Netherlands. We have tax years open in Germany beginning in fiscal 2007 and the Netherlands beginning in fiscal 2009. |
Deferred Tax Liabilities, Other | $ 6,100,000 us-gaap_DeferredTaxLiabilitiesOther |
Deferred Tax Liabilities, Undistributed Foreign Earnings | 39,700,000 us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings |
Cumulative positive earnings of foreign subsidiaries | 40,800,000 us-gaap_UndistributedEarningsOfForeignSubsidiaries |
Liability for uncertain tax positions related to continuing operations, excluding interest and penalties | $ 0 rell_LiabilitiesForUncertainTaxPositionsExcludingInterestsAndPenalties | $ 0 rell_LiabilitiesForUncertainTaxPositionsExcludingInterestsAndPenalties

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- Definition Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 + Details
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