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INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Mar. 31, 2022
--- | --- | ---
Deferred tax assets |  |
Net operating loss carryforwards | $ 317,035 | $ 350,242
Research and development and other credit carryforwards | 29,237 | 26,127
Stock-based compensation | 9,257 | 14,877
Reserves and allowances | 16,050 | 23,880
Lease liability | 18,236 | 20,614
Capitalized IRC 174 costs | 31,207 | 0
Fixed assets and intangibles | 5,728 | 836
Gross deferred tax assets | 426,750 | 436,576
Valuation allowance | (360,274) | (349,093)
Total deferred tax assets | 66,476 | 87,483
Deferred tax liabilities |  |
Intangibles | (23,781) | (28,529)
Deferred sales commissions | (30,607) | (32,857)
Convertible debt | 0 | (12,066)
Lease asset | (12,202) | (14,145)
Net deferred taxes | $ (114) | $ (114)

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