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Investments | 3 Months Ended
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Mar. 31, 2021
Investment in Marketable Securities [Abstract] |
Investment Holdings | INVESTMENTS Equity 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, 2021
In thousands | Cost |  | Gross Unrealized Losses |  | Gross Unrealized Gains |  | Estimated Fair Value
Equity Securities |  |  |  |  |  |  |
Integra Resources Corp. | $ | 7,500 |  |  | $ | — |  |  | $ | 707 |  |  | $ | 8,207 |
Other | 2 |  |  | — |  |  | — |  |  | 2 |
Equity securities | $ | 7,502 |  |  | $ | — |  |  | $ | 707 |  |  | $ | 8,209 |
| 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 |
On January 4, 2021, the Company completed the sale of 83,556 shares of common stock of Metalla Royalty & Streaming Ltd. (“Metalla”) (“Metalla Common Shares”) at an average price (net of commission) of $11.19 per Metalla Common Share for net proceeds of $0.9 million for a realized gain of $0.8 million.

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- Definition The entire disclosure for investment holdings. This includes the long positions of investments for the entity. It contains investments in affiliated and unaffiliated issuers. The investments include securities and non securities (i.e. commodities and futures contracts). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14) -URI http://asc.fasb.org/extlink&oid=120401592&loc=d3e611322-123010 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B) -URI http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 5D -Subparagraph (SX 210.12-13D) -URI http://asc.fasb.org/extlink&oid=120401592&loc=SL120429264-123010 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12) -URI http://asc.fasb.org/extlink&oid=120401592&loc=d3e611133-123010 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 5 -Subparagraph (SX 210.12-13) -URI http://asc.fasb.org/extlink&oid=120401592&loc=d3e611282-123010 + Details
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