PROVISION FOR ENVIRONMENTAL REHABILITATION - Reconciliation of Discounted Provision (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Reconciliation of changes in other provisions [abstract]
Accretion expense	$ 3,001	$ 307
Less current portion	946	0
Long-term portion	70,680	92,849
Provision for environmental rehabilitation
Reconciliation of changes in other provisions [abstract]
Beginning balance	92,849	8,155
Acquisitions	1,247	85,734
Change in estimate capitalized	(24,849)	2,080
Accretion expense	3,001	351
Reclamation expenditures	(622)	0
Disposal	0	(3,471)
Ending balance	71,626	92,849
Less current portion	946	0
Long-term portion	70,680	92,849
Provision for environmental rehabilitation \| Argenta
Reconciliation of changes in other provisions [abstract]
Beginning balance	0
Acquisitions	1,170
Change in estimate capitalized	0
Accretion expense	0
Reclamation expenditures	0
Disposal	0
Ending balance	1,170	0
Less current portion	398
Long-term portion	772
Provision for environmental rehabilitation \| South Arturo
Reconciliation of changes in other provisions [abstract]
Beginning balance	0	3,427
Acquisitions		0
Change in estimate capitalized		0
Accretion expense		44
Reclamation expenditures		0
Disposal		(3,471)
Ending balance		0
Less current portion		0
Long-term portion		0
Provision for environmental rehabilitation \| McCoy-Cove
Reconciliation of changes in other provisions [abstract]
Beginning balance	6,684	4,728
Acquisitions	0	0
Change in estimate capitalized	(84)	1,842
Accretion expense	212	114
Reclamation expenditures	0	0
Disposal	0	0
Ending balance	6,812	6,684
Less current portion	0	0
Long-term portion	6,812	6,684
Provision for environmental rehabilitation \| Granite Creek
Reconciliation of changes in other provisions [abstract]
Beginning balance	2,394	0
Acquisitions	0	2,051
Change in estimate capitalized	(995)	318
Accretion expense	74	25
Reclamation expenditures	0	0
Disposal	0	0
Ending balance	1,473	2,394
Less current portion	0	0
Long-term portion	1,473	2,394
Provision for environmental rehabilitation \| Lone Tree
Reconciliation of changes in other provisions [abstract]
Beginning balance	60,592	0
Acquisitions	77	60,475
Change in estimate capitalized	(13,066)	0
Accretion expense	1,917	117
Reclamation expenditures	(622)	0
Disposal	0	0
Ending balance	48,898	60,592
Less current portion	548	0
Long-term portion	48,350	60,592
Provision for environmental rehabilitation \| Ruby Hill
Reconciliation of changes in other provisions [abstract]
Beginning balance	23,179	0
Acquisitions	0	23,208
Change in estimate capitalized	(10,704)	(80)
Accretion expense	798	51
Reclamation expenditures	0	0
Disposal	0	0
Ending balance	13,273	23,179
Less current portion	0	0
Long-term portion	$ 13,273	$ 23,179

Accretion expense, provision for environmental rehabilitation

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Increase (decrease) in estimate capitalized provisions for environmental rehabilitation

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- Definition

The increase in other provisions resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Other provisions]

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The decrease in other provisions resulting from the transfer of those provisions to liabilities included in disposal groups classified as held for sale. [Refer: Other provisions; Disposal groups classified as held for sale [member]]

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The amount of non-current provision for decommissioning, restoration and rehabilitation costs. [Refer: Provision for decommissioning, restoration and rehabilitation costs]

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The amount of provisions other than provisions for employee benefits. [Refer: Provisions]

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The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions]

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The amount of current provision for decommissioning, restoration and rehabilitation costs. [Refer: Provision for decommissioning, restoration and rehabilitation costs]

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