Description of Business and Liquidity (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2023 USD ($) Segment	Jun. 30, 2022 USD ($)	Mar. 31, 2023 USD ($)
Description of Business [Abstract]
Number of operating segment | Segment	1
Number of reporting segment | Segment	1
Liquidity [Abstract]
Cash and cash equivalents	$ 1,434,093		$ 1,676,813
Accumulated deficit	(4,064,570)		$ (3,772,754)
Net loss	$ (327,845)	$ (353,784)