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SUPPLEMENTAL CASH FLOW INFORMATION (Tables) | 12 Months Ended
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Dec. 31, 2020
Cash Flow Statement [Abstract] |
Schedule of Noncash other Operating Activities | Adjustments for other non-cash operating activities during the years ended December 31, 2020 and 2019 were as follows:
Years ended December 31 | 2020 | 2019
Share-based payments | $ | 2,082 |  | $ | 4,005 |
Loss or write-down on sale of mineral properties, plant and equipment | 1,265 |  | 1,008 |
Loss on change in fair value of concentrate trade receivables | 1,396 |  | — |
Other | (1,909) |  | 6,528 |
| $ | 2,834 |  | $ | 11,541 |
Schedule Of Changes In Operating Assets and Liabilities | Net change in operating assets and liabilities during the years ended December 31, 2020 and 2019 were as follows:
Years ended December 31 | 2020 | 2019
Trade and other receivables | $ | 16,509 |  | $ | (58,525) |
Other current assets | (10,649) |  | (7,819) |
Inventories | 79,103 |  | (10,872) |
Accounts payable and accrued liabilities | (17,072) |  | 15,801 |
Reclamation and closure cost provision - current | (4,832) |  | (3,493) |
| $ | 63,059 |  | $ | (64,908) |
Schedule of Noncash Investing and Financing Transactions | Non-cash investing and financing transactions during the years ended December 31, 2020 and 2019 were as follows:
Years ended December 31 | 2020 | 2019
Consideration issued for acquisition of Alacer (note 4(a)) | $ | (2,179,647) |  | $ | — |
Acquisition of net assets in exchange for a receivable | 12,576 |  | — |
Reclamation and closure cost provision assumed in land acquisition | — |  | (12,990) |
Transfer of share-based payment reserve upon exercise of stock options (note 18) | (2,976) |  | (2,804) |
Transfer of equity-settled PSUs (note 18) | — |  | 1,356 |
Transfer of cash-settled RSUs and PSUs (note 18) | (4,138) |  | — |
Extinguishment of loan receivable in connection with the acquisition of non-controlling interest (note 4(b)) | — |  | 11,369 |
Non-cash consideration for acquisition of non-controlling interest (note 4(b)) | — |  | (30,101) |
Other non-cash investing and financing transactions | 2,643 |  | — |
| $ | (2,171,542) |  | $ | (33,170) |

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