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Investments (Tables)
 9 Months Ended
Sep. 30, 2022
Investment in Marketable Securities [Abstract]  
Investments The Company makes strategic investments in equity securities of silver and gold exploration, development and royalty and streaming companies.
At September 30, 2022
In thousandsCostGross
Unrealized
Losses		Gross
Unrealized
Gains		Estimated
Fair Value
Equity Securities
Victoria Gold Corp.$70,560 $(34,305)$— $36,255 
Integra Resources Corp.9,455 (7,415)— 2,040 
Avino Silver & Gold Mines Ltd13,720 (6,580)— 7,140 
Other2,233 (2,120)— 113 
Equity securities$95,968 $(50,420)$— $45,548 
At December 31, 2021
In thousandsCostGross
Unrealized
Losses		Gross
Unrealized
Gains		Estimated
Fair Value
Equity Securities
Victoria Gold Corp.$128,710 $(4,499)$— $124,211 
Integra Resources Corp.9,455 (1,469)— 7,986 
Equity securities$138,165 $(5,968)$— $132,197