CONVERTIBLE SENIOR NOTES, TERM LOAN AND CAPPED CALLS - Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Debt Instrument [Line Items]
Amortization of debt discount and issuance costs	$ 4,254	$ 20,404	$ 16,898
Term Loan | Convertible Debt
Debt Instrument [Line Items]
Contractual interest expense	17,816
Amortization of debt discount and issuance costs	2,012
Total interest expense	19,828
Convertible Notes 2028 | Convertible Debt
Debt Instrument [Line Items]
Contractual interest expense	4,027
Amortization of debt discount and issuance costs	548
Total interest expense	4,575
Convertible Senior Notes 2024 | Convertible Debt
Debt Instrument [Line Items]
Contractual interest expense	1,177	2,271	1,813
Amortization of debt discount and issuance costs	1,694	20,404	16,898
Total interest expense	$ 2,871	$ 22,675	$ 18,711