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Amount of investment in equity method investee and investment in and advance to affiliate.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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OPERATING SEGMENT REPORTING - Geographic information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 30, 2021	Dec. 31, 2020	Dec. 30, 2020	Dec. 31, 2019	Dec. 30, 2019
Operating Segment Reporting
Long-lived Assets	$ 440,316		$ 445,624
Revenue	136,541		104,789		$ 117,019
Investment in MSC	90,961		108,326
Total which excludes Company's ROU office lease asset	400		600
Minera Santa Cruz S.A. [Member]
Operating Segment Reporting
Investment in MSC	90,961		108,326		110,183
Bank of Nova Scotia
Operating Segment Reporting
Revenue		$ 134,700
Bank of Nova Scotia \| Customer
Operating Segment Reporting
Revenue			$ 33,000	$ 67,000	$ 103,600	$ 4,900
Bank of Nova Scotia \| Customer \| Revenue Benchmark
Operating Segment Reporting
Gold and silver sales, percentage		98.80%	32.00%	64.00%	89.00%	4.00%
UNITED STATES
Operating Segment Reporting
Long-lived Assets	37,878		$ 46,801
Revenue	79,205		48,884		$ 43,847
Canada
Operating Segment Reporting
Long-lived Assets	93,294		78,986
Revenue	50,704		41,452		50,058
MEXICO
Operating Segment Reporting
Long-lived Assets	26,561		20,021
Revenue	6,632		14,453		$ 23,114
ARGENTINA
Operating Segment Reporting
Long-lived Assets	282,583		299,816
ARGENTINA \| Minera Santa Cruz S.A. [Member]
Operating Segment Reporting
Investment in MSC	$ 90,900		$ 108,300