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LONG-TERM DEBT (Details) - USD ($)								6 Months Ended	12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Mar. 31, 2021	Jun. 25, 2020	May 23, 2019	Aug. 10, 2018	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
LONG-TERM DEBT
Shares issued as bonus interest						1,935,484
Stock issued during the period						$ 2,600,000				$ 918,000
Gold Bar mine
LONG-TERM DEBT
Interest costs capitalized									$ 600,000
Term Loan
LONG-TERM DEBT
Working capital covenant							$ 10,000,000.0	$ 10,000,000.0
Term Loan | Robert McEwen
LONG-TERM DEBT
Face amount							$ 50,000,000.0
Term of debt instrument							3 years
Stated interest rate (as a percent)							9.75%
Amended loan agreement
LONG-TERM DEBT
Face amount					$ 50,000,000
Extension term for repayment of debt					2 years
Term loan retirement period					12 months
Principal repayments					$ 2,000,000.0
Final payment					$ 26,000,000.0
Working capital covenant	$ 10,000,000	$ 7,000,000.0	$ 5,000,000.0	$ 2,500,000
Shares issued as bonus interest					2,091,700
Stock issued during the period					$ 1,875,000

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