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Supplemental cash flow information (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Changes in non-cash working capital |  |
Accounts receivable | $ 58,488 | $ (44,353)
Inventories | 113,388 | 241,496
Supplies and prepaid expenses | 3,612 | 52,192
Accounts payable and accrued liabilities | (62,250) | (39,616)
Reclamation payments | (32,390) | (31,311)
Other | 15,630 | 4,654
Total | $ 96,478 | $ 183,062

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