Revenue - Schedule of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Total revenues	$ 124,456	$ 52,158	$ 10,097
Product sales, net
Disaggregation of Revenue [Line Items]
Total revenues	82,526	15,600	0
IBSRELA
Disaggregation of Revenue [Line Items]
Total revenues	80,062	15,600	0
XPHOZAH
Disaggregation of Revenue [Line Items]
Total revenues	2,464	0	0
Licensing revenue
Disaggregation of Revenue [Line Items]
Total revenues	35,809	35,031	5,013
Product supply revenue
Disaggregation of Revenue [Line Items]
Total revenues	6,121	1,527	907
Collaborative development revenue
Disaggregation of Revenue [Line Items]
Total revenues	$ 0	$ 0	$ 4,177