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Other non-current assets (Narrative) (Details) - USD ($) | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2022 | Mar. 31, 2022 | Mar. 17, 2022 | Dec. 31, 2021
Loans receivable | $ 11,749,000 |  |  | $ 7,267,000
Right-of-use assets | 134,219,000 |  |  | 114,414,000
Maltby auction site |  |  |  |
Right-of-use assets | 9,020,000 |  |  |
Bolton Properties Sale Leaseback Transaction [Member] |  |  |  |
Right-of-use assets |  | $ 16,587,000 | $ 16,587,000 |
Non-current Loans Receivable [Member] |  |  |  |
Loans receivable | 7,199,000 |  |  | 0
Trade and Other Receivables [Member] |  |  |  |
Loans receivable | $ 4,550,000 |  |  | $ 7,267,000
Financing Receivable [Member] | Minimum [Member] |  |  |  |
Term of financing lending arrangement | 1 year |  |  |
Financing Receivable [Member] | Maximum [Member] |  |  |  |
Term of financing lending arrangement | 4 years |  |  |

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- Definition Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 + Details
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