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Lease Obligations and Other Commitments - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
May 29, 2021 | May 30, 2020 | Jun. 01, 2019 | Jun. 02, 2019
Commitments And Contingencies Disclosure [Abstract] |  |  |  |
Operating right-of-use assets | $ 2,262 | $ 3,018 |  | $ 3,600
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Lease ROU asset | Lease ROU asset |  | Lease ROU asset
Financing right-of-use assets | $ 308 | $ 401 |  | $ 500
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Lease ROU asset | Lease ROU asset |  | Lease ROU asset
Operating lease liabilities | $ 2,276 |  |  | $ 3,800
Operating Lease, Liability, Statement of Financial Position [Extensible List] |  |  |  | rell:OperatingAndFinanceLeaseLiability
Financing lease liabilities | 148 |  |  | $ 500
Finance Lease, Liability, Statement of Financial Position [Extensible List] |  |  |  | rell:OperatingAndFinanceLeaseLiability
Rent expense | $ 1,700 | $ 1,800 | $ 1,700 |

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Definition Indicates line item in statement of financial position that includes finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918631-209977 + Details
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- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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