Stockholder's equity (deficit) - Undesignated preferred stock and Restricted common stock (Details) - Undesignated Preferred Stock	Jun. 30, 2024 $ / shares shares
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.0001
Preferred stock, shares issued	0
Preferred stock, shares outstanding	0
Maximum
Class of Stock [Line Items]
Preferred stock, shares authorized	10,000,000