INCOME TAXES - Reconciliation of Taxes Provided to Federal Statutory Rate (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Tax benefit at statutory rate	$ (15,075)	$ (36,909)	$ (34,492)
State income taxes before valuation allowance, net of federal effect	(3,088)	(7,754)	(7,445)
Foreign tax rate differential	492	(2,056)	(2,206)
Research and development credits	(2,513)	(3,362)	(4,078)
Change in valuation allowance	(1,708)	49,620	47,225
Compensation/option differences	16,858	(6,788)	(5,045)
Non-deductible compensation	4,397	7,606	6,194
Other	3,444	(744)	690
Total income tax provision (benefit)	$ 2,807	$ (387)	$ 843

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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