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Note 16 - Gold Hedge (Details Textual) | 1 Months Ended | 5 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | [1]
Statement Line Items [Line Items] |  |  |  |  |  |
Hedging gains (losses) for hedge of group of items with offsetting risk positions |  |  | $ (601,000) | $ (360,000) | [1] |
Commodity price risk [member] | Derivative contract for 4,500 ounces of Gold [member] |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |
Term of derivative contract |  | 150 days |  |  |  |
Derivative contract, number of ounces of gold hedged |  | 4,500 |  |  |  |
Hedging instruments, protected, price |  | $ 1,250 |  |  |  |
Hedging instruments, participation, price |  | $ 324,000 |  |  |  |
Commodity price risk [member] | Derivative contract for 4,600 ounces of Gold [member] |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |
Derivative contract, number of ounces of gold hedged | 4,600 |  |  |  |  |
Hedging instruments, protected, price | $ 1,400 |  |  |  |  |
Hedging instruments, participation, price | $ 379,000 |  |  |  |  |
Hedged item, assets |  |  | 102,000 | 0 |  |
Commodity price risk [member] | Derivative contract for 8,000 ounces of Gold [member] |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |
Hedging gains (losses) for hedge of group of items with offsetting risk positions |  |  | $ (601,000) | $ (360,000) |  |
[1] | The Group initially applied IFRS 16 on January 1, 2019, using the modified retrospective approach. Under this approach, comparative information is not restated. There was no cumulative effect of initially applying IFRS 16 to recognise in retained earnings at the date of initial application.

X
- Definition The number of ounces hedged in a derivative contract. + References No definition available. + Details
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- Definition The company would full participation if the market price of hedging assets rise above such price. + References No definition available. + Details
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- Definition The amount of a hedged item, recognised as an asset. [Refer: Hedged items [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 24B -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_24B_a_i&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The hedging gains (losses) for hedge of group of items with offsetting risk positions. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 24C -Subparagraph b -Clause vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_24C_b_vi&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 9 -IssueDate 2019-01-01 -Paragraph 6.6.4 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2019-en-r&anchor=para_6.6.4&doctype=Standard -URIDate 2019-03-27 + Details
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