Net loss per share - Antidilutive (Details) - shares	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net loss per share
Total shares excluded from calculation (in shares)	1,177,346	1,679,214	1,509,720
Employee Stock Option
Net loss per share
Total shares excluded from calculation (in shares)	403,884	900,026	1,107,490
Unvested restricted stock units
Net loss per share
Total shares excluded from calculation (in shares)	773,462	779,188	402,230

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration