Decommissioning And Restoration Liability (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure Of Decommissioning And Restoration Liability [Abstract]

Disclosure of detailed information about decommissioning and restoration liability assumptions

The GK Mine decommissioning and restoration liability was calculated using the following assumptions as at December 31, 2019 and 2018:

		December 31, 2019		December 31, 2018
Expected undiscounted cash flows	$	58,965	$	56,122
Discount rate		1.76%		2.18%
Inflation rate		1.35%		1.95%
Periods		2029		2029

The Kennady North Project decommissioning and restoration liability was calculated using the following assumptions as at December 31, 2019 and 2018:

		December 31, 2019		December 31, 2018
Expected undiscounted cash flows	$	2,235	$	175
Discount rate		3.71%		1.86%
Inflation rate		1.96%		1.95%
Periods		2023		2021

Disclosure of detailed information about decommissioning and restoration liability activity

The continuity of the decommissioning and restoration liability at December 31, 2019 and 2018 is as follows:

	GK Mine		KNP			Total
Balance, at January 1, 2018	$	29,200	$	-		$	29,200
Addition of balance at the time of KDI acquisition		-		173			173
Change in estimate of discounted cash flows		24,900		(8	)		24,892
Accretion recorded during the year		656		1			657
Balance, at December 31, 2018	$	54,756	$	166		$	54,922
Change in estimate of discounted cash flows		571		1,919			2,490
Accretion recorded during the year		1,102		2			1,104
Balance, at December 31, 2019	$	56,429	$	2,087		$	58,516
Less: current portion of decommissioning and restoration liability		2,445		-			2,445
Non-current decommissioning and restoration liability	$	53,984	$	2,087		$	56,071