Note 6 - Acquisitions and Divestitures - Maximum Deferred Consideration Payments (Details) $ in Thousands	Oct. 01, 2022 USD ($)
December 31, 2022	$ 0
December 30, 2023	300
December 29, 2024	304
Estimated future contingent consideration payments	$ 604

Represents estimated future contingent consideration payments in next fiscal year following current fiscal year.

No definition available.

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