Disaggregated revenue - Contract asset (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue From Contracts With Customers [Abstract]
Beginning balance	$ 2,801	$ 1,303	$ 2,801	$ 1,303	$ 618
Contract acquisition costs	2,519	1,084
Amortization expense	(1,021)	(399)
Ending balance	2,801	1,303
Current			1,345	605
Non-current			1,456	698
Contract assets	$ 2,801	$ 1,303	$ 2,801	$ 1,303	$ 618

Revenue From Contracts With Customers

No definition available.

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- Definition

The amount of amortisation for assets recognised from the costs incurred to obtain or fulfil contracts with customers. [Refer: Assets recognised from costs to obtain or fulfil contracts with customers; Amortisation expense]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2020-01-01
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+ Details

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- Definition

The amount of an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer, when that right is conditioned on something other than the passage of time (for example, the entity’s future performance).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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+ Details

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- Definition

The amount of current contract assets. [Refer: Contract assets]

+ References

+ Details

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- Definition

The increase in contract assets resulting from business combinations. [Refer: Business combinations [member]; Contract assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 15
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- Definition

The amount of non-current contract assets. [Refer: Contract assets]

+ References

+ Details

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