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Note 12 - Treasury Stock Transactions (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended | 72 Months Ended | 0 Months Ended |
--- | --- | --- | --- | ---
Jan. 03, 2015 | Dec. 28, 2013 | Jan. 03, 2015 | Oct. 28, 2013 | Feb. 28, 2010
Note 12 - Treasury Stock Transactions (Details) [Line Items] |  |  |  |  |
Treasury Stock, Shares, Acquired | 3,474 us-gaap_TreasuryStockSharesAcquired |  |  |  |
Stock Repurchase Program 2010 [Member] |  |  |  |  |
Note 12 - Treasury Stock Transactions (Details) [Line Items] |  |  |  |  |
Stock Repurchase Program, Authorized Amount (in Dollars) |  |  |  |  | $ 7.5 us-gaap_StockRepurchaseProgramAuthorizedAmount1 / us-gaap_PlanNameAxis = rcmt_StockRepurchaseProgram2010Member
Treasury Stock, Shares, Acquired |  | 15,450 us-gaap_TreasuryStockSharesAcquired / us-gaap_PlanNameAxis = rcmt_StockRepurchaseProgram2010Member | 1,473,306 us-gaap_TreasuryStockSharesAcquired / us-gaap_PlanNameAxis = rcmt_StockRepurchaseProgram2010Member |  |
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share) |  | $ 5.35 us-gaap_TreasuryStockAcquiredAverageCostPerShare / us-gaap_PlanNameAxis = rcmt_StockRepurchaseProgram2010Member | $ 5.09 us-gaap_TreasuryStockAcquiredAverageCostPerShare / us-gaap_PlanNameAxis = rcmt_StockRepurchaseProgram2010Member |  |
Treasury Stock, Value, Acquired, Cost Method (in Dollars) |  |  | 7.5 us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_PlanNameAxis = rcmt_StockRepurchaseProgram2010Member |  |
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 |

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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + 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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