Note 12 - Share-based payments - Inputs for Measurement of Grant Date Fair Values and Share Units Granted (Details)	12 Months Ended
Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2021 USD ($) $ / shares
Restricted stock units (RSUs) [member]
Statement Line Items [Line Items]
Risk free rate	3.88%	3.88%	1.52%
Fair value (USD) \| $	$ 12.52	$ 12.52	$ 12.06
Share price (USD) (in dollars per share)	$ 12.40		$ 11.71
Volatility	1.29%	1.29%	1.20%
RSU dividends reinvested	1,980	1,980	1,066
Settlements/terminations	0	0	0
Total awards	19,565	19,565	18,651
Restricted stock units (RSUs) [member] \| January 11, 2019 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| March 23, 2019 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| June 8, 2019 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| January 11, 2020 [member]
Statement Line Items [Line Items]
Grants	17,585	17,585	17,585
Restricted stock units (RSUs) [member] \| March 31, 2020 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| June 1, 2020 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| September 9, 2020 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| September 14, 2020 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| October 5, 2020 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| January 11, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| April 1, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| May 14, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| June 1, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| June 14, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| August 13, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| September 1, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| September 6, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| September 20, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| October 1, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| October 11, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| November 12, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| December 1, 2021 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| January 11, 2022 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| January 12, 2022 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| May 13, 2022 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| June 1, 2022 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| July 1, 2022 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Restricted stock units (RSUs) [member] \| October 1, 2022 [member]
Statement Line Items [Line Items]
Grants	0	0	0
Performance share units (PSUs) [member]
Statement Line Items [Line Items]
Risk free rate	3.88%	3.88%	1.52%
Fair value (USD) \| $	$ 12.42	$ 12.42	$ 11.63
Share price (USD) (in dollars per share)	$ 12.42		$ 11.71
Volatility	0.91%	0.91%	1.06%
RSU dividends reinvested	0	0	0
Settlements/terminations	(254,491)	(254,491)	(30,600)
Total awards	224,408	224,408	343,379
Performance share units (PSUs) [member] \| Bottom of range [member]
Statement Line Items [Line Items]
Performance multiplier percentage	93.00%	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%	100.00%
Performance share units (PSUs) [member] \| January 11, 2019 [member]
Statement Line Items [Line Items]
Grants	95,740	95,740	95,740
Performance share units (PSUs) [member] \| March 23, 2019 [member]
Statement Line Items [Line Items]
Grants	28,287	28,287	28,287
Performance share units (PSUs) [member] \| June 8, 2019 [member]
Statement Line Items [Line Items]
Grants	14,672	14,672	14,672
Performance share units (PSUs) [member] \| January 11, 2020 [member]
Statement Line Items [Line Items]
Grants	114,668	114,668	114,668
Performance share units (PSUs) [member] \| March 31, 2020 [member]
Statement Line Items [Line Items]
Grants	1,971	1,971	1,971
Performance share units (PSUs) [member] \| June 1, 2020 [member]
Statement Line Items [Line Items]
Grants	1,740	1,740	1,740
Performance share units (PSUs) [member] \| September 9, 2020 [member]
Statement Line Items [Line Items]
Grants	1,611	1,611	1,611
Performance share units (PSUs) [member] \| September 14, 2020 [member]
Statement Line Items [Line Items]
Grants	20,686	20,686	20,686
Performance share units (PSUs) [member] \| October 5, 2020 [member]
Statement Line Items [Line Items]
Grants	514	514	514
Performance share units (PSUs) [member] \| January 11, 2021 [member]
Statement Line Items [Line Items]
Grants	78,875	78,875	78,875
Performance share units (PSUs) [member] \| April 1, 2021 [member]
Statement Line Items [Line Items]
Grants	770	770	770
Performance share units (PSUs) [member] \| May 14, 2021 [member]
Statement Line Items [Line Items]
Grants	2,389	2,389	2,389
Performance share units (PSUs) [member] \| June 1, 2021 [member]
Statement Line Items [Line Items]
Grants	1,692	1,692	1,692
Performance share units (PSUs) [member] \| June 14, 2021 [member]
Statement Line Items [Line Items]
Grants	507	507	507
Performance share units (PSUs) [member] \| August 13, 2021 [member]
Statement Line Items [Line Items]
Grants	2,283	2,283	2,283
Performance share units (PSUs) [member] \| September 1, 2021 [member]
Statement Line Items [Line Items]
Grants	553	553	553
Performance share units (PSUs) [member] \| September 6, 2021 [member]
Statement Line Items [Line Items]
Grants	531	531	531
Performance share units (PSUs) [member] \| September 20, 2021 [member]
Statement Line Items [Line Items]
Grants	526	526	526
Performance share units (PSUs) [member] \| October 1, 2021 [member]
Statement Line Items [Line Items]
Grants	2,530	2,530	2,530
Performance share units (PSUs) [member] \| October 11, 2021 [member]
Statement Line Items [Line Items]
Grants	500	500	500
Performance share units (PSUs) [member] \| November 12, 2021 [member]
Statement Line Items [Line Items]
Grants	1,998	1,998	1,998
Performance share units (PSUs) [member] \| December 1, 2021 [member]
Statement Line Items [Line Items]
Grants	936	936	936
Performance share units (PSUs) [member] \| January 11, 2022 [member]
Statement Line Items [Line Items]
Grants	96,359	96,359	0
Performance share units (PSUs) [member] \| January 12, 2022 [member]
Statement Line Items [Line Items]
Grants	825	825	0
Performance share units (PSUs) [member] \| May 13, 2022 [member]
Statement Line Items [Line Items]
Grants	2,040	2,040	0
Performance share units (PSUs) [member] \| June 1, 2022 [member]
Statement Line Items [Line Items]
Grants	1,297	1,297	0
Performance share units (PSUs) [member] \| July 1, 2022 [member]
Statement Line Items [Line Items]
Grants	2,375	2,375	0
Performance share units (PSUs) [member] \| October 1, 2022 [member]
Statement Line Items [Line Items]
Grants	2,024	2,024	0
Equity-settled performance units (EPUs) [member]
Statement Line Items [Line Items]
Fair value (USD) \| $	$ 10.15	$ 10.15
Share price (USD) (in dollars per share)	$ 11.50
Performance multiplier percentage	100.00%	100.00%
Total awards	130,380	130,380
Holding period on shares issued (Year)	1 year	1 year
Share option programs [member]
Statement Line Items [Line Items]
Options granted	20,000	20,000
Expected option life in years	10	10
Share option programs [member] \| February 27, 2018 [member]
Statement Line Items [Line Items]
Risk free rate	2.86%	2.86%
Share price (USD) (in dollars per share)		$ 9.30
Volatility	32.00%	32.00%
Options granted	10,000	10,000
Holding period on shares issued (Year)	0 years	0 years
Exercise price (in CAD per share)		$ 9.30
Expected option life in years	3	3
Share option programs [member] \| September 30, 2022 [member]
Statement Line Items [Line Items]
Risk free rate	4.00%	4.00%
Share price (USD) (in dollars per share)	$ 9.82
Volatility	102.00%	102.00%
Options granted	10,000	10,000
Holding period on shares issued (Year)	1 year	1 year
Exercise price (in CAD per share)	$ 9.49
Expected option life in years	3	3

The minimum holding period of other equity instruments.

No definition available.

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- Definition

The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement as a result of dividends being re-invested.

+ References

No definition available.

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- Definition

The performance multiplier if performance conditions have been met.

+ References

No definition available.

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- References

No definition available.

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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
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-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
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- Definition

The option life of share options granted.

+ References

+ 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

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- Definition

The exercise price of share options granted.

+ References

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Data Type:	num:perShareItemType
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- Definition

The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2021-01-01
-Paragraph 47
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
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- Definition

The number of other equity instruments (ie other than share options) exercised or vested 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
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- Definition

The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement.

+ References

+ Details

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- Definition

The number of share options outstanding in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2021-01-01
-Paragraph 45
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-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45_d&doctype=Standard
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_45_b_i&doctype=Standard
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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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

+ Details

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- Definition

The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]]

+ References

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