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Note 15 - Income Taxes (Details) - Unrecognized Tax Benefits (USD $) In Thousands, unless otherwise specified | Jan. 03, 2015 | Dec. 28, 2013
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Unrecognized Tax Benefits [Abstract] |  |
Balance | $ 628 us-gaap_UnrecognizedTaxBenefits | $ 628 us-gaap_UnrecognizedTaxBenefits

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- Details
Name: | rcmt_UnrecognizedTaxBenefitsAbstract
Namespace Prefix: | rcmt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant