OPERATING SEGMENT REPORTING - Geographic information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Operating Segment Reporting
Long-lived Assets	$ 454,208,000		$ 447,066,000
Revenue	34,752,000	$ 25,542,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	89,990,000		93,451,000
Investments in Exploration Property	800,000		800,000
Minera Santa Cruz S.A.
Operating Segment Reporting
Revenue	45,740,000	39,207,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	89,990,000		93,451,000	$ 90,961,000
UNITED STATES
Operating Segment Reporting
Long-lived Assets	75,957,000		70,577,000
Revenue	11,587,000	11,742,000
Canada
Operating Segment Reporting
Long-lived Assets	95,326,000		91,552,000
Revenue	23,165,000	12,896,000
MEXICO
Operating Segment Reporting
Long-lived Assets	29,218,000		29,219,000
Revenue		$ 904,000
ARGENTINA
Operating Segment Reporting
Long-lived Assets	253,707,000		255,718,000
ARGENTINA | Minera Santa Cruz S.A.
Operating Segment Reporting
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 90,000,000.0		$ 93,500,000