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Note 8 - Intangible Assets (Details) - Components of Intangible Assets (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 04, 2015	Jan. 03, 2015
Finite-Lived Intangible Assets [Line Items]
Balance	$ 172us-gaap_IntangibleAssetsNetExcludingGoodwill	$ 194us-gaap_IntangibleAssetsNetExcludingGoodwill
Amortization of intangibles during the thirteen week period ended April 4, 2015	22us-gaap_AmortizationOfIntangibleAssets
Engineering [Member]
Finite-Lived Intangible Assets [Line Items]
Balance	172us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = rcmt_EngineeringMember	189us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = rcmt_EngineeringMember
Amortization of intangibles during the thirteen week period ended April 4, 2015	17us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementBusinessSegmentsAxis = rcmt_EngineeringMember
Information Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Balance		5us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = rcmt_InformationTechnologyMember
Amortization of intangibles during the thirteen week period ended April 4, 2015	$ 5us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementBusinessSegmentsAxis = rcmt_InformationTechnologyMember

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph ((a)(1),(b))

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Balance Type:
Period Type: