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Note 6 - Maximum Deferred Consideration Payments (Details) - BGA [Member] $ in Thousands | Jan. 02, 2016 USD ($)
--- | ---
January 2, 2016 | $ 822
December 31, 2016 | 665
December 30, 2017 | 313
Estimated future contingent consideration payments | $ 1,800

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 in year three. + References No definition available. + Details
Name: | rcmt_EstimatedFutureContingentConsiderationPaymentsYearThree
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

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=rcmt_BGAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |