Accrued expenses and other current liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Accrued CMO and CRO costs	$ 22,481	$ 24,824
Accrued employee compensation	10,876	19,972
Accrued goods and services	5,453	8,391
Accrued rebates	9,194	5,365
Accrued professional fees	7,090	2,531
Accrued refund liability	0	5,600
Other	9,002	6,505
Total accrued expenses and other current liabilities	$ 64,096	$ 73,188