Net Loss per Common Share (Details) - shares		6 Months Ended
		Sep. 30, 2023	Sep. 30, 2022
Stock Options and Performance Stock Options [Member]
Net Loss per Common Share [Abstract]
Potentially dilutive securities (in shares)		148,753,920	154,836,057
Restricted Stock Units and Performance Stock Units (Non-vested) [Member]
Net Loss per Common Share [Abstract]
Potentially dilutive securities (in shares)		20,073,411	25,214,766
March 2020 CVARs [Member]
Net Loss per Common Share [Abstract]
Potentially dilutive securities (in shares)	[1]	28,753,677	32,011,996
November 2021 CVARs (Non-vested) [Member]
Net Loss per Common Share [Abstract]
Potentially dilutive securities (in shares)		2,506,499	4,060,128
Restricted Common Stock (Non-vested) [Member]
Net Loss per Common Share [Abstract]
Potentially dilutive securities (in shares)		487,005	772,018
Earn-Out Shares (Non-vested) [Member]
Net Loss per Common Share [Abstract]
Potentially dilutive securities (in shares)		3,080,387	3,080,387
Private Placement Warrants [Member]
Net Loss per Common Share [Abstract]
Potentially dilutive securities (in shares)		0	10,214,365
Public Warrants [Member]
Net Loss per Common Share [Abstract]
Potentially dilutive securities (in shares)		0	20,475,875
Other Stock Based Awards and Instruments Issued [Member]
Net Loss per Common Share [Abstract]
Potentially dilutive securities (in shares)		5,611,820	6,209,162

[1] Refer to Note 9, “Share-Based Compensation” for details regarding settlement of CVARs.