The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Period in which the company has an obligation to pay additional amounts, starting from the acquisition date

+ References

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
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The cash outflow during the period for redemption of redeemable noncontrolling interests.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Contingently Redeemable Non-controlling Interest in Ritchie Bros. Financial Services (Details) $ in Thousands, $ in Thousands			12 Months Ended
	Jul. 12, 2016 CAD ($)	Jul. 12, 2016 USD ($)	Dec. 31, 2018	Dec. 31, 2016 USD ($)	Jul. 12, 2016 USD ($)
Redeemable Noncontrolling Interest [Line Items]
Cash consideration				$ 41,092
RBFS [Member] \| Ritchie Bros. Financial Services [Member]
Redeemable Noncontrolling Interest [Line Items]
Percentage of ownership interest, majority	51.00%	51.00%
NCI Holders [Member] \| Ritchie Bros. Financial Services [Member]
Redeemable Noncontrolling Interest [Line Items]
Percentage of ownership interest	49.00%				49.00%
Total consideration	$ 57,900	$ 44,141
Cash consideration	53,900	$ 41,092
Contingent consideration	4,000				$ 3,049
Additional cash compensation	1,500
Period to make additional amount of obligation upon achievement of certain condition			3 years
NCI Holders [Member] \| Maximum [Member] \| Ritchie Bros. Financial Services [Member]
Redeemable Noncontrolling Interest [Line Items]
Additional cash compensation	$ 10,000