Stockholder's equity (Details) - At-The-Market - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended		32 Months Ended
	Sep. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Nov. 30, 2021
Subsidiary, Sale of Stock [Line Items]
Issuance and sale of common stock	$ 10,280	$ 14,089
Equity Distribution Agreement with Cowen and Company, LLC
Subsidiary, Sale of Stock [Line Items]
Sale of stock, number of shares issued in transaction (in shares)	1,631,521			4,132,122
Sale of stock, consideration received on transaction	$ 10,300		$ 0	$ 24,400	$ 0
Issuance of common stock, net (in shares)						15,318,264
Price per share (in dollars per share)	$ 5.54			$ 5.54
Issuance and sale of common stock						$ 82,300
Maximum | Equity Distribution Agreement with Cowen and Company, LLC
Subsidiary, Sale of Stock [Line Items]
Sale of stock, value authorized for sale							$ 200,000