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Note 7 - Goodwill (Details) - Changes in Carrying Amount of Goodwill (USD $) In Thousands, unless otherwise specified | Apr. 04, 2015 | Jan. 03, 2015
--- | --- | ---
Goodwill [Line Items] |  |
Balance as of April 4, 2015 | $ 10,223 us-gaap_Goodwill | $ 10,223 us-gaap_Goodwill
Engineering [Member] |  |
Goodwill [Line Items] |  |
Balance as of April 4, 2015 | 3,004 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = rcmt_EngineeringMember |
Information Technology [Member] |  |
Goodwill [Line Items] |  |
Balance as of April 4, 2015 | 5,516 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = rcmt_InformationTechnologyMember |
Specialty Health Care [Member] |  |
Goodwill [Line Items] |  |
Balance as of April 4, 2015 | $ 1,703 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = rcmt_SpecialtyHealthCareMember |

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_GoodwillLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rcmt_EngineeringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rcmt_InformationTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rcmt_SpecialtyHealthCareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |