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v3.23.1

Note 5 - Property and Equipment (Details Textual) - USD ($) $ in Thousands | 3 Months Ended
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Apr. 01, 2023 | Apr. 02, 2022
Write Off of Fully Depreciated Property and Equipment | $ 0 | $ 49
Depreciation, Nonproduction | $ 271 | $ 238

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- Definition Write off of fully depreciated property and equipmen + References No definition available. + Details
Name: | rcmt_WriteOffOfFullyDepreciatedPropertyAndEquipment
Namespace Prefix: | rcmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The expense recognized in the current period that allocates the cost of nonproduction tangible assets over their useful lives. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
Name: | us-gaap_DepreciationNonproduction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration