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Note 15 - Income Taxes (Details)	3 Months Ended
	Apr. 04, 2015	Mar. 29, 2014
Note 15 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Percent	37.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations	39.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations
United States [Member]
Note 15 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Percent	41.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations / us-gaap_IncomeTaxAuthorityAxis = rcmt_UnitedStatesMember	41.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations / us-gaap_IncomeTaxAuthorityAxis = rcmt_UnitedStatesMember
Canada [Member]
Note 15 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Percent	31.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations / us-gaap_IncomeTaxAuthorityAxis = rcmt_CanadaMember	34.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations / us-gaap_IncomeTaxAuthorityAxis = rcmt_CanadaMember

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(2))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Subparagraph 2

-Article 4

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