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Note 12 - Share-based payments - Inputs for Measurement of Grant Date Fair Values and Share Units Granted (Details) | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 USD ($) $ / shares
Restricted stock units (RSUs) [member] |  |
Statement Line Items [Line Items] |  |
Risk free rate | 1.52% | 0.93%
Fair value (USD) | $ | $ 12.06 | $ 15.88
Share price (USD) (in dollars per share) | $ / shares | $ 11.71 | $ 15.88
Volatility | 1.20% | 1.00%
RSU dividends reinvested | 1,066 | 386
Awards paid out/ expired | 0 | 0
Total awards outstanding | 18,651 | 17,971
Restricted stock units (RSUs) [member] | January 11, 2019 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | March 23, 2019 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | June 8, 2019 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | January 11, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 17,585 | 17,585
Restricted stock units (RSUs) [member] | March 31, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | June 1, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | September 9, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | September 14, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | October 5, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | January 11, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | April 1, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | May 14, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | June 1, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | June 14, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | August 13, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | September 1, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | September 6, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | September 20, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | October 1, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | October 11, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | November 12, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Restricted stock units (RSUs) [member] | December 1, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 0 | 0
Performance share units (PSUs) [member] |  |
Statement Line Items [Line Items] |  |
Risk free rate | 1.52% | 0.93%
Fair value (USD) | $ | $ 11.63 | $ 15.51
Share price (USD) (in dollars per share) | $ / shares | $ 11.71 | $ 15.88
Volatility | 1.06% | 1.06%
RSU dividends reinvested | 0 | 0
Awards paid out/ expired | (30,600) | 0
Total awards outstanding | 343,379 | 279,889
Performance share units (PSUs) [member] | Bottom of range [member] |  |
Statement Line Items [Line Items] |  |
Performance multiplier percentage | 93.00% | 93.00%
Performance share units (PSUs) [member] | Top of range [member] |  |
Statement Line Items [Line Items] |  |
Performance multiplier percentage | 100.00% | 100.00%
Performance share units (PSUs) [member] | January 11, 2019 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 95,740 | 95,740
Performance share units (PSUs) [member] | March 23, 2019 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 28,287 | 28,287
Performance share units (PSUs) [member] | June 8, 2019 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 14,672 | 14,672
Performance share units (PSUs) [member] | January 11, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 114,668 | 114,668
Performance share units (PSUs) [member] | March 31, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 1,971 | 1,971
Performance share units (PSUs) [member] | June 1, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 1,740 | 1,740
Performance share units (PSUs) [member] | September 9, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 1,611 | 1,611
Performance share units (PSUs) [member] | September 14, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 20,686 | 20,686
Performance share units (PSUs) [member] | October 5, 2020 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 514 | 514
Performance share units (PSUs) [member] | January 11, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 78,875 | 0
Performance share units (PSUs) [member] | April 1, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 770 | 0
Performance share units (PSUs) [member] | May 14, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 2,389 | 0
Performance share units (PSUs) [member] | June 1, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 1,692 | 0
Performance share units (PSUs) [member] | June 14, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 507 | 0
Performance share units (PSUs) [member] | August 13, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 2,283 | 0
Performance share units (PSUs) [member] | September 1, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 553 | 0
Performance share units (PSUs) [member] | September 6, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 531 | 0
Performance share units (PSUs) [member] | September 20, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 526 | 0
Performance share units (PSUs) [member] | October 1, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 2,530 | 0
Performance share units (PSUs) [member] | October 11, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 500 | 0
Performance share units (PSUs) [member] | November 12, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 1,998 | 0
Performance share units (PSUs) [member] | December 1, 2021 [member] |  |
Statement Line Items [Line Items] |  |
Grants | 936 | 0

X
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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 2021-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2021-03-24 + 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 2021-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_47_a_i&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The weighted average fair value at the measurement date of granted equity instruments other than share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2021-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard -URIDate 2021-03-24 + Details
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