Note 6 - Acquisitions - Maximum Deferred Consideration Payments (Details) $ in Thousands	Apr. 03, 2021 USD ($)
January 1, 2022 (after April 3, 2021)	$ 520
December 31, 2022	2,364
Estimated future contingent consideration payments	$ 2,884

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