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Employee benefits - Changes in Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Employee benefits
Fair value of plan assets at the start of the year	$ 13,497	$ 12,888	$ 8,754
Real return (loss) in the plan assets	346	(1,028)	(4,642)
Benefits paid	(430)	(419)	(508)
Settlement	(7,739)
Fair value of plan assets at the end of the year	4,982	13,497	12,888
Non-current-assets	4,703	3,947	3,025
Net actuarial loss at the beginning of the year	1,039	192	(3,634)
Amortization during the year	0	0	326
Settlement	(1,627)	0	0
Gain	647	847	3,500
Adjustment to recognize the minimum pension obligations	$ 59	$ 1,039	$ 192

X

- Definition

The decrease (increase) in the net defined benefit liability (asset) resulting from payments from the plan. [Refer: Net defined benefit liability (asset)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2022-03-24
-Paragraph 141
-Subparagraph g
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X

- Definition

The decrease (increase) in the net defined benefit liability (asset) resulting from payments from the plan in respect of settlements. [Refer: Decrease (increase) in net defined benefit liability (asset) resulting from gains (losses) arising from settlements; Net defined benefit liability (asset); Defined benefit plans [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2022-03-24
-Paragraph 141
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- Definition

The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2022-03-24
-Paragraph 57
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_57_a&doctype=Standard
-URIDate 2022-03-24

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X

- Definition

The decrease (increase) in the net defined benefit liability (asset) resulting from the return on plan assets, excluding amounts included in interest income or expense. The return on plan assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Plan assets [member]; Net defined benefit liability (asset); Actuarial assumptions [member]; Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2022-03-24
-Paragraph 141
-Subparagraph c
-Clause i
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-URIDate 2022-03-24

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- Definition

The amount of amortisation expense of prior year losses.

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No definition available.

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- References

No definition available.

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- Definition

The amount of net acturial gain (loss) relating to minimum pension obligation.

+ References

No definition available.

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- Definition

The amount of net estimated gain or loss recognized during the period.

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No definition available.

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- Definition

The amount non-current assets that contribute to the fair value of defined benefit plan assets.

+ References

No definition available.

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- Definition

The settlement adjustment to recognize the minimum pension obligation.

+ References

No definition available.

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