Net (Loss) Income per Common Share - Schedule of Potentially Dilutive Common Stock Equivalents Excluded from Computation of Diluted Net (Loss) Income per Common Share (Details) - shares	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Stock options and performance stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	76,091,993	139,412,098	54,648,258
Restricted stock units and performance restricted stock units (non-vested)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	60,793,247	50,992,414	5,422,465
March 2020 CVARs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	17,548,368	17,548,368
November 2021 CVARs (non-vested)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	348,527	249,120
Restricted common stock (non-vested)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	0	255,911
Earn-Out Shares (non-vested)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	3,080,387	3,080,387
Other stock based awards and instruments issued
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	1,170,140	4,731,198	3,924,305