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Note 6 - Acquisitions - Maximum Deferred Consideration Payments (Details) $ in Thousands | Dec. 31, 2016 USD ($)
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December 30, 2017 | $ 1,061
December 30, 2018 | 170
Estimated future contingent consideration payments | $ 1,231

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 two. + References No definition available. + Details
Name: | rcmt_EstimatedFutureContingentConsiderationPaymentsYearTwo
Namespace Prefix: | rcmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant