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Supplemental cash flow information | 12 Months Ended
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Dec. 31, 2020
Supplemental cash flow information |
Supplemental cash flow information | 11. Supplemental cash flow information ​
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Year ended December 31, | ​ | 2020 | ​ | 2019 | ​ | 2018
Trade and other receivables | ​ | $ | 22,079 |  | $ | (8,611) |  | $ | (43,341)
Inventory | ​ | ​ | (18,149) | ​ | ​ | 44,633 | ​ | ​ | (77,292)
Advances against auction contracts | ​ | ​ | 6,705 | ​ | ​ | 2,766 | ​ | ​ | (8,266)
Prepaid expenses and deposits | ​ | ​ | 2,196 | ​ | ​ | (3,403) | ​ | ​ | 646
Income taxes receivable | ​ | ​ | 13 | ​ | ​ | (445) | ​ | ​ | 13,053
Auction proceeds payable | ​ | ​ | (74,114) | ​ | ​ | 69,382 | ​ | ​ | 8,768
Trade and other payables | ​ | ​ | 38,078 | ​ | ​ | (21,296) | ​ | ​ | 39,531
Income taxes payable | ​ | ​ | 9,671 | ​ | ​ | 5,812 | ​ | ​ | 1,954
Share unit liabilities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,070
Operating lease obligation | ​ | ​ | (11,162) | ​ | ​ | (13,404) | ​ | ​ | —
Other | ​ | ​ | (4,451) | ​ | ​ | 1,168 | ​ | ​ | (1,673)
Net changes in operating assets and liabilities | ​ | $ | (29,134) |  | $ | 76,602 |  | $ | (65,550)
​ Net capital spending, which consists of property, plant and equipment and intangible asset additions excluding those acquired through business combinations, net of proceeds on disposition of property, plant and equipment, was $26,751,000 for the year ended December 31, 2020 (2019: $35,075,000; 2018: $32,426,000). ​
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Year ended December 31, | ​ | 2020 | ​ | 2019 | ​ | 2018
Interest paid, net of interest capitalized | ​ | $ | 32,521 |  | $ | 37,046 |  | $ | 39,429
Interest received | ​ | ​ | 2,338 | ​ | ​ | 3,802 | ​ | ​ | 2,888
Net income taxes paid | ​ | ​ | 43,398 | ​ | ​ | 26,699 | ​ | ​ | 10,352
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Non-cash purchase of property, plant and equipment under finance lease | ​ | ​ | 11,326 |  | ​ | 15,282 |  | ​ | 8,968
Non-cash right of use assets obtained (reassessed) in exchange for new lease obligations | ​ | ​ | 10,588 |  | ​ | 29,117 |  | ​ | —
Non-cash equity consideration in connection with Rouse acquisition | ​ | ​ | 1,459 | ​ | ​ | — | ​ | ​ | —
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​ | ​ | 2020 | ​ | 2019 | ​ | 2018
Cash and cash equivalents | ​ | $ | 278,766 | ​ | $ | 359,671 | ​ | $ | 237,744
Restricted cash | ​ | ​ | 28,129 | ​ | ​ | 60,585 | ​ | ​ | 67,823
Cash, cash equivalents, and restricted cash | ​ | $ | 306,895 | ​ | $ | 420,256 | ​ | $ | 305,567
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- Definition The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -URI http://asc.fasb.org/topic&trid=2134446 + Details
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