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v3.25.2

Leases - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2025 | Jun. 01, 2024 | May 27, 2023
Leases [Abstract] |  |  |
Rent expenses | $ 1.4 | $ 1.5 | $ 1.5

X
- Definition Lease expense. + References No definition available. + Details
Name: | rell_LeaseExpense
Namespace Prefix: | rell_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration