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INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Deferred tax assets:
Net operating loss carryforwards	$ 296,036	$ 317,035
Research and development and other credit carryforwards	28,118	29,237
Stock-based compensation	7,540	9,257
Reserves and allowances	17,463	16,050
Operating lease liability	15,456	18,236
Capitalized IRC 174 costs	51,317	31,207
Fixed assets and intangibles	6,435	5,728
Gross deferred tax assets	422,365	426,750
Valuation allowance	(368,408)	(360,274)
Total deferred tax assets	53,957	66,476
Deferred tax liabilities:
Intangibles	(19,045)	(23,781)
Deferred sales commissions	(26,303)	(30,607)
Operating lease, right-of-use asset	(8,724)	(12,202)
Net deferred taxes	$ (115)	$ (114)

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