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Investments
 3 Months Ended
Mar. 31, 2020
Investment in Marketable Securities [Abstract]  
INVESTMENTS INVESTMENTS
Equity and Debt Securities
The Company makes strategic investments in equity and debt securities of silver and gold exploration, development and royalty and streaming companies.
 
At March 31, 2020
In thousands
Cost
 
Gross
Unrealized
Losses
 
Gross
Unrealized
Gains
 
Estimated
Fair Value
Equity Securities
 
 
 
 
 
 
 
Metalla Royalty & Streaming Ltd.
$
10,463

 
$
—

 
$
11,546

 
$
22,009

Integra Resources Corp.
5,000

 
(1,463
)
 
—

 
3,537

Rockhaven Resources Ltd.
2,064

 
(1,101
)
 
—

 
963

Other
1,304

 
(987
)
 
—

 
317

Equity securities
$
18,831

 
$
(3,551
)
 
$
11,546

 
$
26,826



 
At December 31, 2019
In thousands
Cost
 
Gross
Unrealized
Losses
 
Gross
Unrealized
Gains
 
Estimated
Fair Value
Equity Securities
 
 
 
 
 
 
 
Metalla Royalty & Streaming Ltd.
$
10,463

 
$
—

 
$
17,725

 
$
28,188

Integra Resources Corp.
5,000

 
—

 
355

 
$
5,355

Rockhaven Resources, Ltd.
2,064

 
(376
)
 
—

 
1,688

Other
1,304

 
(889
)
 
—

 
415

Equity securities
$
18,831

 
$
(1,265
)
 
$
18,080

 
$
35,646