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Subsequent events (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Subsequent events
Number of options granted		80,907,443	56,222,658	18,200,000
Share options with service condition only
Subsequent events
Number of options granted			4,250,000	18,200,000
Subsequent event | Over allotment option | ADS
Subsequent events
Shares issued	455,000
Public per share	$ 15.50
Net proceeds	$ 6,559
Subsequent event | Share options with service condition only
Subsequent events
Number of options granted	5,485,508

X

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

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-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
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-Topic 230
-Publisher FASB
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- Definition

Gross number of share options (or share units) granted during the period.

+ References

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-Name Accounting Standards Codification
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-Publisher FASB
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- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

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- Definition

Number of new stock issued during the period.

+ References

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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