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Note 8 - Components of Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 02, 2016 | Jan. 03, 2015
Engineering [Member] | PCI [Member] |  |
Intangibles acquired, acquisition |  | $ 68
Engineering [Member] | SDS [Member] |  |
Intangibles acquired, acquisition | $ 140 |
Engineering [Member] |  |
Beginning balance | 189 | 179
Amortization of intangibles during the period | (77) | (58)
Ending balance | $ 252 | $ 189
Information Technology [Member] | PCI [Member] |  |
Intangibles acquired, acquisition |  |
Information Technology [Member] | SDS [Member] |  |
Intangibles acquired, acquisition |  |
Information Technology [Member] |  |
Beginning balance | $ 5 | $ 37
Amortization of intangibles during the period | $ (5) | (32)
Ending balance |  | 5
PCI [Member] |  |
Intangibles acquired, acquisition |  | 68
SDS [Member] |  |
Intangibles acquired, acquisition | $ 140 |
Beginning balance | 194 | 216
Amortization of intangibles during the period | (82) | (90)
Intangibles acquired, acquisition | 252 | 194
Ending balance | $ 252 | $ 194

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- 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 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: 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=56944662&loc=d3e3602-108585 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

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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- 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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Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=rcmt_SDSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |