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Supplemental cash flow information (Schedule of Net Changes In Operating Assets and Liabilities) (Details) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Increase (Decrease) in Operating Capital [Abstract] |  |
Trade and other receivables | $ (120,160) | $ (185,899)
Inventory | 16,926 | 3,938
Advances against auction contracts | 3,132 | 6,566
Prepaid expenses and deposits | 1,671 | 2,184
Income taxes receivable | (4,923) | 1,191
Auction proceeds payable | 217,423 | 213,596
Trade and other payables | (13,684) | 20,675
Income taxes payable | (12,278) | 4,179
Operating lease obligation | (9,000) | (8,809)
Other | 831 | (3,709)
Net changes in operating assets and liabilities | $ 79,938 | $ 53,912

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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=121586364&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit 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=121586364&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=121586364&loc=d3e3602-108585 + Details
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