Stock-based compensation - Summary of stock option activity - other information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
2020 Stock Option and Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average fair value of options granted (in dollars per share)	$ 5.59	$ 2.84
Intrinsic value of options exercised (in thousands)	$ 407	$ 22
Inducement Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average fair value of options granted (in dollars per share)	$ 4.94	$ 0