Note 6 - Acquisitions and Divestitures - Maximum Deferred Consideration Payments (Details) $ in Thousands	Oct. 02, 2021 USD ($)
December 31, 2022	$ 1,078
December 30, 2023	1,338
Estimated future contingent consideration payments	$ 2,416

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