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Provisions and other liabilities - Disclosure of other provisions (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of other provisions [line items] |  |
Balance - Beginning of period | $ 3,494 | $ 7,668
Acquisition of Barkerville | 20,549 | 0
Adoption of IFRS 16 | 10,893 | 0
New liabilities | 427 | 3,229
Accretion | 89 | 0
Settlement of liabilities | (1,355) | (3,117)
RSU to be settled in equity | 0 | (2,426)
DSU to be settled in equity | (3,722) | 0
Revision of estimates | 279 | (1,860)
Balance - End of period | 30,654 | 3,494
Current portion | 1,289 | 3,494
Non-current portion | 29,365 | 0
Provisions and other liabilities | 30,654 | 3,494
Restricted Share Units ("RSU") [Member] |  |
Disclosure of other provisions [line items] |  |
Balance - Beginning of period | 32 | 4,343
Acquisition of Barkerville | 0 | 0
Adoption of IFRS 16 | 0 | 0
New liabilities | 11 | 1,906
Accretion | 0 | 0
Settlement of liabilities | (45) | (2,618)
RSU to be settled in equity | 0 | (2,426)
DSU to be settled in equity | 0 | 0
Revision of estimates | 2 | (1,173)
Balance - End of period | 0 | 32
Current portion | 0 | 32
Non-current portion | 0 | 0
Provisions and other liabilities | 0 | 32
Deferred Share Units ("DSU") [Member] |  |
Disclosure of other provisions [line items] |  |
Balance - Beginning of period | 3,462 | 3,325
Acquisition of Barkerville | 0 | 0
Adoption of IFRS 16 | 0 | 0
New liabilities | 416 | 1,323
Accretion | 0 | 0
Settlement of liabilities | (544) | (499)
RSU to be settled in equity | 0 | 0
DSU to be settled in equity | (3,722) | 0
Revision of estimates | 388 | (687)
Balance - End of period | 0 | 3,462
Current portion | 0 | 3,462
Non-current portion | 0 | 0
Provisions and other liabilities | 0 | 3,462
Environmental Rehabilitation [Member] |  |
Disclosure of other provisions [line items] |  |
Balance - Beginning of period | 0 |
Acquisition of Barkerville | 20,549 |
Adoption of IFRS 16 | 0 |
New liabilities | 0 |
Accretion | 89 |
Settlement of liabilities | 0 |
RSU to be settled in equity | 0 |
DSU to be settled in equity | 0 |
Revision of estimates | (111) |
Balance - End of period | 20,527 | 0
Current portion | 493 |
Non-current portion | 20,034 |
Provisions and other liabilities | 20,527 |
Lease liabilities [Member] |  |
Disclosure of other provisions [line items] |  |
Balance - Beginning of period | 0 |
Acquisition of Barkerville | 0 |
Adoption of IFRS 16 | 10,893 |
New liabilities | 0 |
Accretion | 0 |
Settlement of liabilities | (766) |
RSU to be settled in equity | 0 |
DSU to be settled in equity | 0 |
Revision of estimates | 0 |
Balance - End of period | 10,127 | $ 0
Current portion | 796 |
Non-current portion | 9,331 |
Provisions and other liabilities | $ 10,127 |

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- Definition The increase in other provisions resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2018-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_84&doctype=Standard -URIDate 2018-03-16 + Details
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