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Supplemental cash flow information (Schedule of Net Changes In Operating Assets and Liabilities) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Increase (Decrease) in Operating Capital [Abstract] |  |  |
Trade and other receivables | $ (11,607) | $ 22,079 | $ (8,611)
Inventory | (21,884) | (18,149) | 44,633
Advances against auction contracts | 2,073 | 6,705 | 2,766
Prepaid expenses and deposits | (17,739) | 2,196 | (3,403)
Income taxes receivable | (13,457) | 13 | (445)
Auction proceeds payable | 82,484 | (74,114) | 69,382
Trade and other payables | 27,995 | 38,078 | (21,296)
Income taxes payable | (11,484) | 9,671 | 5,812
Operating lease obligation | (11,844) | (11,162) | (13,404)
Other | (103) | (4,451) | 1,168
Net changes in operating assets and liabilities | $ 24,434 | $ (29,134) | $ 76,602

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- Definition The increase (decrease) during the reporting period in the amount due from customers, which arise when the Company pays customers (owners), in advance, a portion of the expected gross auction proceeds from the sale of related assets at future auctions. + References No definition available. + Details
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- Definition The increase (decrease) during the period in the amount due to consignors for equipment and other assets accepted for auction by the Company that are payable within one year (or the operating cycle, if longer). + References No definition available. + Details
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- Definition Change in recurring obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and sale of goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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