Equity Method Investment, Amount Sold, Shares

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- Definition

Equity Method Investment, Realized Gain (Loss) On Royalty Repurchase

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- Definition

Investments in marketable securities.

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No definition available.

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- Definition

Payments To Acquire Royalty Interests In Mining Properties, Shares

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- Definition

Royalty Interest, Percent

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale.

+ References

No definition available.

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- Definition

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale.

+ References

No definition available.

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
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- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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- Definition

Amount of expenses related to the generation of investment income.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
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- Definition

Balance held at close of period in number of shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 50
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- Definition

Amount of realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).

+ References

No definition available.

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- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
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-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Investments (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Sep. 14, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities		$ 19,862		$ 19,862
Equity securities
Debt Securities, Available-for-sale [Line Items]
Cost		11,863		11,863		$ 18,831
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(136)		(136)		(1,265)
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		8,135		8,135		18,080
Available-for-sale Securities		19,862		19,862		35,646
Debt Securities, Available-for-sale [Abstract]
Marketable Securities, Realized Gain (Loss)		$ 33	$ (485)	8,816	$ (859)
Equity and debt securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities						35,646
Metalla Royalty & Streaming Ltd.
Investment in Marketable Securities (Textual) [Abstract]
Proceeds from sale of equity method investments				20,700
Equity method investment, realized gain on disposal				11,600
Investment income, investment expense				$ 1,300
Equity method investment, amount sold (in shares)		3,910,000		3,910,000
Par value, common stock (in dollars per share)		$ 5.30		$ 5.30
Royalty interest, percent				0.3875%
Payments to acquire royalty interests in mining properties (in shares)				421,554
Equity method investment, realized gain on disposal				$ 1,400
Investment owned, balance (in shares)		909,756		909,756
Metalla Royalty & Streaming Ltd. \| Equity securities
Debt Securities, Available-for-sale [Line Items]
Cost		$ 1,851		$ 1,851		10,463
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		0		0		0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		5,269		5,269		17,725
Available-for-sale Securities		7,120		7,120		28,188
Integra Resources Corp. [Member]
Investment in Marketable Securities (Textual) [Abstract]
Proceeds from sale of equity method investments	$ 2,500
Equity method investment, amount sold (in shares)	735,294
Par value, common stock (in dollars per share)	$ 3.40
Equity Method Investment, Ownership Percentage	5.60%
Integra Resources Corp. [Member] \| Equity securities
Debt Securities, Available-for-sale [Line Items]
Cost		7,500		7,500		5,000
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		0		0		0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		2,576		2,576		355
Available-for-sale Securities		10,076		10,076		5,355
Rockhaven Resources, Ltd. [Member] \| Equity securities
Debt Securities, Available-for-sale [Line Items]
Cost		2,064		2,064		2,064
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(136)		(136)		(376)
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		0		0		0
Available-for-sale Securities		1,928		1,928		1,688
Other Investments [Member] \| Equity securities
Debt Securities, Available-for-sale [Line Items]
Cost		448		448		1,304
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		0		0		(889)
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		290		290		0
Available-for-sale Securities		738		738		415
Level 3 \| Equity securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities		$ 0		$ 0
Level 3 \| Equity and debt securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities						$ 0