Note 6 - Acquisitions - Maximum Deferred Consideration Payments (Details) $ in Thousands	Jun. 27, 2020 USD ($)
January 2, 2021 (after June 27, 2020)
January 1, 2022	500
December 31, 2022	2,286
Estimated future contingent consideration payments	$ 2,786

Represents estimated future contingent consideration payments remainder of fiscal year.

No definition available.

Name:	rcmt_EstimatedFutureContingentConsiderationPaymentsRemainderOfFiscalYear
Namespace Prefix:	rcmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant