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Note 27 - Share-based Expenses - Inputs for Measurement of Grant Date Fair Values and Share Units Granted (Details) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
May 30, 2018 USD ($) $ / shares | Feb. 27, 2018 USD ($) $ / shares | Oct. 13, 2017 USD ($) $ / shares | Dec. 31, 2019 USD ($) $ / shares | Dec. 31, 2018 USD ($) $ / shares | Dec. 31, 2017
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Options granted |  | 5,000 | [1] | 10,000 |  |  | 10,000 | 5,000
Risk-free interest rate |  | 2.40% |  | 286.00% |  |  |  |
Expected stock price volatility (based on historical volatility) |  | 118.00% |  | 32.00% |  |  |  |
Expected option life in years |  | 3 |  | 3 |  |  |  |
Exercise price (in CAD per share) |  | $ 8.10 | [1] | $ 9.30 |  |  |  |
Share price at grant date (in CAD per share) |  | $ 8.10 | [1] | $ 9.30 |  |  |  |
Fair value at grant date | $ |  | $ 5.81 | [1] | $ 1.40 |  |  |  |
Restricted stock units (RSUs) [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Fair value ($) | $ |  |  |  |  |  | $ 8.46 | $ 5.46 |
Share price ($) (in dollars per share) |  |  |  |  |  | $ 8.46 | $ 5.46 |
Grants |  |  |  |  |  | 11,316 | 10,960 |
Settlements |  |  |  |  |  | (87,434) |  |
Total awards at December 31 |  |  |  |  |  | 5,052 | 92,130 |
Restricted stock units (RSUs) [member] | January 11, 2016 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  | 60,645 | 60,645 |
Restricted stock units (RSUs) [member] | March 23, 2016 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  | 10,965 | 10,965 |
Restricted stock units (RSUs) [member] | June 8, 2016 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  | 5,117 | 5,117 |
Restricted stock units (RSUs) [member] | January 19, 2017 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  | 4,443 | 4,443 |
Restricted stock units (RSUs) [member] | January 19, 2019 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  |  |  |
Restricted stock units (RSUs) [member] | June 8, 2019 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  |  |  |
Performance share units (PSUs) [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Fair value ($) | $ |  |  |  |  |  | $ 8.19 | $ 5.46 |
Share price ($) (in dollars per share) |  |  |  |  |  | $ 8.46 | $ 5.46 |
Performance multiplier percentage |  |  |  |  |  |  | 85.00% |
Grants |  |  |  |  |  |  |  |
Settlements |  |  |  |  |  | (306,920) |  |
Total awards at December 31 |  |  |  |  |  | 156,473 | 324,694 |
Performance share units (PSUs) [member] | Bottom of range [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Performance multiplier percentage |  |  |  |  |  | 93.00% |  |
Performance share units (PSUs) [member] | Top of range [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Performance multiplier percentage |  |  |  |  |  | 100.00% |  |
Performance share units (PSUs) [member] | January 11, 2016 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  | 242,579 | 242,579 |
Performance share units (PSUs) [member] | March 23, 2016 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  | 43,871 | 43,871 |
Performance share units (PSUs) [member] | June 8, 2016 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  | 20,470 | 20,470 |
Performance share units (PSUs) [member] | January 19, 2017 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  | 17,774 | 17,774 |
Performance share units (PSUs) [member] | January 19, 2019 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  | 124,027 |  |
Performance share units (PSUs) [member] | June 8, 2019 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Grants |  |  |  |  |  | 14,672 |  |
Options granted on December 21, 2015 [member] |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |
Options granted | [1] |  |  |  | 18,000 |  |  |
Risk-free interest rate |  |  |  |  | 0.53% |  |  |
Expected stock price volatility (based on historical volatility) |  |  |  |  | 119.00% |  |  |
Expected option life in years |  |  |  |  | 5 |  |  |
Exercise price (in CAD per share) | [1] |  |  |  | $ 11.50 |  |  |
Share price at grant date (in CAD per share) | [1] |  |  |  | $ 11.50 |  |  |
Fair value at grant date | $ | [1] |  |  |  | $ 9.45 |  |  |
[1] | Amounts stated after the 1:5 share consolidation effected on June 26, 2017.

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- Definition The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2019-03-27 + Details
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