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Segmented information (Schedule of Carrying Value Goodwill) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Nov. 02, 2021	Dec. 31, 2020	Dec. 08, 2020	Dec. 31, 2019
Goodwill	$ 947,715		$ 840,610		$ 672,310
Rouse Services LLC [Member]
Goodwill				$ 163,968
SmartEquip [Member]
Goodwill		$ 110,580
Auctions and Marketplaces [Member]
Goodwill	653,183		653,183
Other Reporting Unit [Member] | Mascus International Holdings BV [Member]
Goodwill	19,984		21,657
Other Reporting Unit [Member] | Rouse Services LLC [Member]
Goodwill	163,968		$ 165,770
Other Reporting Unit [Member] | SmartEquip [Member]
Goodwill	$ 110,580

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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