Variable Interest Entities (Additional Information) (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023
Aggregate carrying value of assets		$ 801,230				$ 801,230		$ 942,598
Aggregate Carrying Value of total liabilities		175,979				175,979		$ 228,659
Recognized revenue	[1]	49,999		$ 75,659		110,863	$ 140,172
Net loss attributable to common stockholders		(75,270)	$ (104,624)	(66,065)	$ (89,532)	(179,894)	(155,597)
VIE [Member]
Recognized revenue		8,500		10,400		17,500	21,100
Net loss attributable to common stockholders		$ 3,300		$ 1,700		$ 5,800	$ 2,100

[1] There was no Therapeutics revenue for the three and six months ended September 30, 2023 and 2022.