CONVERTIBLE SENIOR NOTES AND TERM LOAN - Schedule of Convertible Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Mar. 31, 2024
Debt Instrument [Line Items]
Principal	$ 368,914	$ 426,914
Unamortized debt discount and issuance costs	(4,384)	(17,224)
Net carrying amount	364,530	409,690
Current portion of long-term debt	16,524	0
Non-current portion of long-term debt	348,006	409,690
Loans payable | 2024 Term Loan
Debt Instrument [Line Items]
Principal	167,000
Unamortized debt discount and issuance costs	(1,039)
Net carrying amount	165,961
Current portion of long-term debt	16,524
Non-current portion of long-term debt	149,437
Loans payable | 2022 Term Loan
Debt Instrument [Line Items]
Principal	0	225,000
Unamortized debt discount and issuance costs	0	(13,106)
Net carrying amount	0	211,894
Current portion of long-term debt	0	0
Non-current portion of long-term debt	0	211,894
Convertible debt | 2028 Notes
Debt Instrument [Line Items]
Principal	201,914	201,914
Unamortized debt discount and issuance costs	(3,345)	(4,118)
Net carrying amount	198,569	197,796
Current portion of long-term debt	0	0
Non-current portion of long-term debt	$ 198,569	$ 197,796