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Note 6 - Acquisitions (Details Textual) $ in Millions	Jan. 02, 2016 USD ($)
BGA [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 1.9
PCI [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	1.9
SDS [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 1.5

X

- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rcmt_BGAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rcmt_PCIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rcmt_SDSMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: