Revenue Components - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Pfizer collaboration revenue	$ 54,577		$ 25,172	$ 79,718	$ 54,681
Total revenues	104,824		77,902	221,316	118,965
Accord Healthcare, Ltd
Disaggregation of Revenue [Line Items]
Revenues		$ 50,000
ORGOVYX
Disaggregation of Revenue [Line Items]
Revenues	43,319		18,663	79,353	29,142
MYFEMBREE
Disaggregation of Revenue [Line Items]
Revenues	6,403		629	10,402	1,704
Richter product supply and royalties
Disaggregation of Revenue [Line Items]
Revenues	225		1,771	1,543	1,771
Product revenue, net
Disaggregation of Revenue [Line Items]
Revenues	49,947		21,063	91,298	32,617
Total revenues	49,947		21,063	91,298	32,617
Pfizer collaboration revenue
Disaggregation of Revenue [Line Items]
Total revenues	54,577		25,172	79,718	54,681
Amortization of upfront payment
Disaggregation of Revenue [Line Items]
Pfizer collaboration revenue	20,974		20,974	41,948	41,948
Amortization of regulatory milestones
Disaggregation of Revenue [Line Items]
Pfizer collaboration revenue	33,603		4,198	37,770	12,733
Accord license revenue
Disaggregation of Revenue [Line Items]
Revenues	0		0	50,000	0
Total revenues	0		0	50,000	0
Richter license and milestone revenue
Disaggregation of Revenue [Line Items]
Revenues	300		31,667	300	31,667
Total revenues	$ 300		$ 31,667	$ 300	$ 31,667