Stockholder's equity (Details)	1 Months Ended		12 Months Ended		26 Months Ended
	Jan. 31, 2024 USD ($) shares	Nov. 30, 2021 USD ($)	Dec. 31, 2023 USD ($) vote $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Oct. 31, 2020 $ / shares shares
Subsidiary, Sale of Stock [Line Items]
Preferred stock, shares authorized | shares			10,000,000	10,000,000	10,000,000	10,000,000
Common stock, shares authorized | shares			150,000,000	150,000,000	150,000,000	150,000,000
Preferred stock, par value (in dollars per share) | $ / shares			$ 0.0001	$ 0.0001	$ 0.0001	$ 0.0001
Common stock, par value (in dollars per share) | $ / shares			$ 0.0001	$ 0.0001	$ 0.0001	$ 0.0001
Common stock, number of votes per share | vote			1
Issuance and sale of common stock | $			$ 57,673,000
At-the-market offerings | Equity Distribution Agreement with Cowen and Company, LLC
Subsidiary, Sale of Stock [Line Items]
Issuance and sale of common stock | $			$ 57,700,000	$ 0	$ 71,800,000
Issuance of common stock pursuant to the at-the-market equity program, net (in shares) | shares			11,186,142		13,686,743
Price per share (in dollars per share) | $ / shares			$ 5.42		$ 5.42
At-the-market offerings | Equity Distribution Agreement with Cowen and Company, LLC | Subsequent event
Subsidiary, Sale of Stock [Line Items]
Issuance and sale of common stock | $	$ 14,100,000
Issuance of common stock pursuant to the at-the-market equity program, net (in shares) | shares	2,500,601
Maximum | At-the-market offerings | Equity Distribution Agreement with Cowen and Company, LLC
Subsidiary, Sale of Stock [Line Items]
Issuance and sale of common stock | $		$ 200,000,000