Investments (Tables)

9 Months Ended

Sep. 30, 2020

Investment in Marketable Securities [Abstract]

Investments

The Company makes strategic investments in equity and debt securities of silver and gold exploration, development and royalty and streaming companies.

	At September 30, 2020
In thousands	Cost		Gross Unrealized Losses		Gross Unrealized Gains		Estimated Fair Value
Equity Securities
Metalla Royalty & Streaming Ltd.	$	1,851	$	—	$	5,269	$	7,120
Integra Resources Corp.	7,500		—		2,576		10,076
Rockhaven Resources Ltd.	2,064		(136)		—		1,928
Other	448		—		290		738
Equity securities	$	11,863	$	(136)	$	8,135	$	19,862

	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