The number of business combinations which have contingent consideration outstanding.

No definition available.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
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-Paragraph 1
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of liabilities assumed at the acquisition date.

+ References

+ Details

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
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-Paragraph 1
-Subparagraph (c)
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-Publisher FASB
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-SubTopic 10
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-Paragraph 37
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
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Balance Type:	debit
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- Definition

Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Period Type:	duration

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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-Publisher FASB
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-Topic 230
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Balance Type:	credit
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- Details

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- Details

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- Details

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Data Type:	na
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Period Type:

- Details

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Data Type:	na
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Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rcmt_PsrEngineeringSolutionsDooBeogradVodovacMember
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Note 6 - Acquisitions (Details Textual) $ in Thousands				1 Months Ended	12 Months Ended
Note 6 - Acquisitions (Details Textual) $ in Thousands	Oct. 01, 2017 USD ($)	Apr. 16, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jan. 31, 2017 USD ($)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Business Combinations, Acquisitions with Contingent Consideration Outstanding					6
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High					$ 4,100
Payment for Contingent Consideration Liability, Financing Activities					1,694	$ 993
Allied Health Professionals, LLC [Member]
Business Combination, Consideration Transferred						695
Payments to Acquire Businesses, Gross				$ 275
Allied Health Professionals, LLC [Member] \| Contingent Consideration Tied To Certain Gross Profit Targets Earned [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			$ 140			$ 140
Allied Health Professionals, LLC [Member] \| Unsecured Notes Payable [Member]
Business Combination, Consideration Transferred, Liabilities Incurred			$ 280
RAF Services, Inc [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High					$ 10
Business Combination, Consideration Transferred		$ 133
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		$ 123
PSR Engineering Solutions d.o.o. Beograd (Voždovac) [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 1,763
Business Combination, Consideration Transferred	3,248
Payments to Acquire Businesses, Gross	1,000
Business Combination, Consideration Transferred, Liabilities Incurred	485
Cash Acquired from Acquisition	237
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	$ 58