Investments (Tables)

12 Months Ended

Dec. 31, 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 December 31, 2020
In thousands	Cost		Gross Unrealized Losses		Gross Unrealized Gains		Estimated Fair Value
Equity Securities
Metalla Royalty & Streaming Ltd.	$	166	$	—	$	875	$	1,041
Integra Resources Corp.	7,500		—		4,401		11,901
Other	2		(1)		—		1
Equity securities	$	7,668	$	(1)	$	5,276	$	12,943

	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

Unrealized Gain (Loss) on Investments

The following table presents the disaggregated gain (loss) on equity securities recognized in Income (loss) from continuing operations on the Consolidated Statements of Comprehensive Income:

	Year ended December 31,
In thousands	2020		2019		2018
Net gain (loss)	$	7,601	$	16,208	$	2,945
Less: Realized (gain) loss	(19,140)		(860)		(7,964)
Unrealized gain (loss)	$	(11,539)	$	15,348	$	(5,019)