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CONVERTIBLE SENIOR NOTES AND TERM LOAN - Carrying Amount (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Mar. 31, 2023	Aug. 31, 2022
Convertible debt | Convertible Senior Notes 2024
Debt Instrument [Line Items]
Principal	$ 63,295	$ 63,295	$ 403,800
Unamortized debt discount and issuance costs	(142)	(363)
Net carrying amount	63,153	62,932
Convertible debt | 2028 Notes
Debt Instrument [Line Items]
Principal	201,914	201,914	$ 201,900
Unamortized debt discount and issuance costs	(4,611)	(5,093)
Net carrying amount	197,303	196,821
Loans payable | Term Loan
Debt Instrument [Line Items]
Principal	225,000	250,000
Unamortized debt discount and issuance costs	(14,697)	(18,007)
Net carrying amount	$ 210,303	$ 231,993

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