Revenue Components - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Pfizer collaboration revenue		$ 29,307	$ 25,172	$ 109,025	$ 79,853
Total revenues		100,229	54,440	321,545	173,405
ORGOVYX
Disaggregation of Revenue [Line Items]
Revenues		48,724	24,393	128,077	53,535
MYFEMBREE
Disaggregation of Revenue [Line Items]
Revenues		10,527	2,429	20,929	4,133
Accord product supply and royalties
Disaggregation of Revenue [Line Items]
Revenues		387	0	387	0
Richter product supply and royalties
Disaggregation of Revenue [Line Items]
Revenues		1,784	2,446	3,327	4,217
Product revenue, net
Disaggregation of Revenue [Line Items]
Revenues		61,422	29,268	152,720	61,885
Total revenues		61,422	29,268	152,720	61,885
Pfizer collaboration revenue
Disaggregation of Revenue [Line Items]
Total revenues		29,307	25,172	109,025	79,853
Amortization of upfront payment
Disaggregation of Revenue [Line Items]
Pfizer collaboration revenue		20,974	20,974	62,922	62,922
Amortization of regulatory milestones
Disaggregation of Revenue [Line Items]
Pfizer collaboration revenue		8,333	4,198	46,103	16,931
Accord license and milestone revenue
Disaggregation of Revenue [Line Items]
Revenues	$ 50,000	5,000	0	55,000	0
Total revenues		5,000	0	55,000	0
Richter license and milestone revenue
Disaggregation of Revenue [Line Items]
Revenues		4,000	0	4,300	31,667
Total revenues		4,000	0	4,300	31,667
Other revenue
Disaggregation of Revenue [Line Items]
Revenues		500	0	500	0
Total revenues		$ 500	$ 0	$ 500	$ 0