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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Jun. 25, 2020	Aug. 10, 2018
RELATED PARTY TRANSACTIONS
Long-term debt from related party	$ 24,250		$ 24,250		$ 24,080
Robert McEwen | Term Loan
RELATED PARTY TRANSACTIONS
Face amount						$ 50,000	$ 50,000
Long-term debt from related party						$ 25,000
Affiliate of Robert McEwen
RELATED PARTY TRANSACTIONS
Debt interest expense	$ 600	$ 600	$ 1,200	$ 1,200

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