Decommissioning And Restoration Liability (Tables)

12 Months Ended

Dec. 31, 2020

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, 2020 and 2019:

		December 31, 2020		December 31, 2019
Expected undiscounted cash flows	$	61,558	$	58,965
Discount rate		0.67%		1.76%
Inflation rate		2.00%		1.35%
Periods		2030		2029

The Kennady North Project decommissioning and restoration liability was calculated using the following assumptions as at December 31, 2020 and 2019:

		December 31, 2020		December 31, 2019
Expected undiscounted cash flows	$	2,268	$	2,235
Discount rate		0.25%		3.71%
Inflation rate		2.00%		1.96%
Periods		2024		2023

Disclosure of detailed information about decommissioning and restoration liability activity

The continuity of the decommissioning and restoration liability at December 31, 2020 and 2019 is as follows:

	GK Mine		KNP		Total
Balance, at January 1, 2019	$	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, at  December 31, 2019	$	53,984	$	2,087	$	56,071
Change in estimate of discounted cash flows		13,086		278		13,364
Accretion recorded during the year		976		76		1,052
Balance, at December 31, 2020	$	70,491	$	2,441	$	72,932
Less: current portion of decommissioning and restoration liability		2,489		-		2,489
Non-current decommissioning and restoration liability, at  December 31, 2020	$	68,002	$	2,441	$	70,443