Note 6 - Acquisitions - Maximum Deferred Consideration Payments (Details) $ in Thousands	Apr. 01, 2017 USD ($)
December 30, 2017 (after April 1, 2017)	$ 1,053
December 30, 2018	170
Estimated future contingent consideration payments	$ 1,223

Represents estimated future contingent consideration payments remainder of fiscal year.

No definition available.

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