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Note 12 - Treasury Stock Transactions (Details) (Stock Repurchase Program 2013 [Member], USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended |
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Apr. 04, 2015 | Mar. 29, 2014 | Oct. 28, 2013
Stock Repurchase Program 2013 [Member] |  |  |
Note 12 - Treasury Stock Transactions (Details) [Line Items] |  |  |
Stock Repurchase Program, Authorized Amount (in Dollars) |  |  | $ 5.0 us-gaap_StockRepurchaseProgramAuthorizedAmount1 / us-gaap_PlanNameAxis = rcmt_StockRepurchaseProgram2013Member
Treasury Stock, Shares, Acquired | 0 us-gaap_TreasuryStockSharesAcquired / us-gaap_PlanNameAxis = rcmt_StockRepurchaseProgram2013Member | 0 us-gaap_TreasuryStockSharesAcquired / us-gaap_PlanNameAxis = rcmt_StockRepurchaseProgram2013Member |

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- Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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