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Note 6 - Acquisitions - Maximum Deferred Consideration Payments (Details) $ in Thousands | Jul. 03, 2021 USD ($)
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January 1, 2022 (after July 3, 2021) | $ 28
December 31, 2022 | 1,750
December 30, 2023 | 638
Estimated future contingent consideration payments | $ 2,416

X
- Definition Represents estimated future contingent consideration payments. + References No definition available. + Details
Name: | rcmt_EstimatedFutureContingentConsiderationPayments
Namespace Prefix: | rcmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents estimated future contingent consideration payments remainder of fiscal year. + References No definition available. + Details
Name: | rcmt_EstimatedFutureContingentConsiderationPaymentsCurrent
Namespace Prefix: | rcmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents estimated future contingent consideration payments remainder of fiscal year. + References No definition available. + Details
Name: | rcmt_EstimatedFutureContingentConsiderationPaymentsRemainderOfFiscalYear
Namespace Prefix: | rcmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents estimated future contingent consideration payments in year two. + References No definition available. + Details
Name: | rcmt_EstimatedFutureContingentConsiderationPaymentsYearTwo
Namespace Prefix: | rcmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant