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Investments | 12 Months Ended
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Dec. 31, 2018
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 and development companies.
| At December 31, 2018
In thousands | Cost |  | Gross Unrealized Losses |  | Gross Unrealized Gains |  | Estimated Fair Value
Equity Securities |  |  |  |  |  |  |
Metalla Royalty & Streaming Ltd. | 10,695 |  |  | — |  |  | 2,852 |  |  | 13,547 |
Rockhaven Resources, Ltd. | 2,064 |  |  | (452 | ) |  | — |  |  | 1,612 |
Other | 1,376 |  |  | (946 | ) |  | — |  |  | 430 |
Equity securities | $ | 14,135 |  |  | $ | (1,398 | ) |  | $ | 2,852 |  |  | $ | 15,589 |
Debt Securities |  |  |  |  |  |  |
Metalla Royalty & Streaming Ltd. | $ | 2,271 |  |  | $ | (54 | ) |  | $ | — |  |  | $ | 2,217 |
Equity and debt securities | $ | 16,406 |  |  | $ | (1,452 | ) |  | $ | 2,852 |  |  | $ | 17,806 |
| At December 31, 2017
In thousands | Cost |  | Gross Unrealized Losses |  | Gross Unrealized Gains |  | Estimated Fair Value
Equity Securities |  |  |  |  |  |  |
Metalla Royalty & Streaming Ltd. | $ | 6,294 |  |  | $ | — |  |  | $ | 1,354 |  |  | $ | 7,648 |
Corvus Gold Inc. | 3,582 |  |  | — |  |  | 4,518 |  |  | 8,100 |
Almaden Minerals, Ltd. | 3,125 |  |  | (235 | ) |  | — |  |  | 2,890 |
Northern Empire Resources Corp.(1) | 4,489 |  |  | — |  |  | 1,077 |  |  | 5,566 |
Rockhaven Resources, Ltd. | 2,064 |  |  | (193 | ) |  | — |  |  | 1,871 |
Kootenay Silver, Inc. | 738 |  |  | — |  |  | 1 |  |  | 739 |
Other | 1,479 |  |  | (453 | ) |  | 405 |  |  | 1,431 |
Equity securities | $ | 21,771 |  |  | $ | (881 | ) |  | $ | 7,355 |  |  | $ | 28,245 |
Debt Securities |  |  |  |  |  |  |
Metalla Royalty & Streaming Ltd. | $ | 6,677 |  |  | $ | (85 | ) |  | $ | — |  |  | $ | 6,592 |
Equity and debt securities | $ | 28,448 |  |  | $ | (966 | ) |  | $ | 7,355 |  |  | $ | 34,837 |
(1) In October 2018, the Company acquired the remaining outstanding shares of Northern Empire Resources Corp. not already owned by the Company. The following table presents the disaggregated gain (loss) on equity securities recognized in Income (loss) from continuing operations on the Condensed Consolidated Statements of Comprehensive Income:
| Year ended December 31,
In thousands | 2018 |  | 2017 |  | 2016
Net gain (loss) | $ | 2,945 |  |  | $ | 1,356 |  |  | $ | (2,691 | )
Less: Realized (gain) loss | (7,964 | ) |  | (1,356 | ) |  | 2,691 |
Unrealized gain (loss) | $ | (5,019 | ) |  | $ | — |  |  | $ | — |
The Company performs a quarterly assessment on its debt securities with unrealized losses to determine if the securities are other than temporarily impaired. The following table summarizes unrealized losses on debt securities for which other-than-temporary impairments have not been recognized and the fair values of those securities, aggregated by the length of time the individual securities have been in a continuous unrealized loss position, at December 31, 2018:
| Less than twelve months |  | Twelve months or more |  | Total
In thousands | Unrealized Losses | Fair Value |  | Unrealized Losses | Fair Value |  | Unrealized Losses | Fair Value
Debt securities | — |  | — |  |  | 53 |  | 2,217 |  |  | 53 |  | 2,217 |

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- Definition Investment in marketable securities. + References No definition available. + Details
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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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