Related parties (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($) Vessel	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Related parties transactions [Abstract]
Ownership interest percentage	50.00%	50.00%
Goodwood [Member]
Related parties transactions [Abstract]
Ownership interest percentage	50.00%
Number of vessels technically managed by related party \| Vessel	24
Technical management fees paid \| $	$ 3,310	$ 3,300	$ 3,305

The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2020-01-01
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-Subparagraph b
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-URIDate 2020-01-01

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2020-01-01
-Paragraph 16
-Subparagraph b
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-URIDate 2020-01-01

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2020-01-01
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-Subparagraph a
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Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration