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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Risks and Uncertainties (Details) - USD ($) $ in Thousands					12 Months Ended
	Mar. 02, 2022	Jan. 29, 2021	Dec. 31, 2020	Sep. 10, 2020	Dec. 31, 2022	Dec. 31, 2021
Duration current portion of inventories expected to be processed or recovered					12 months
Duration over which drilling and related costs are capitalized					1 year
Long-term debt					$ 53,979	$ 48,866
Equity Financing In February 2021
Gross proceeds						$ 31,500
Canadian Development Expenses | Flow Through Common Shares
Gross proceeds		$ 12,700
Canadian Exploration Expenditures | Flow Through Common Shares
Gross proceeds	$ 15,100		$ 9,800	$ 10,400

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