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INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Mar. 31, 2021
--- | --- | ---
Deferred tax assets |  |
Net operating loss carryforwards | $ 350,242 | $ 145,655
Research and development and other credit carryforwards | 26,127 | 22,794
Stock-based compensation | 14,877 | 12,669
Reserves and allowances | 23,880 | 6,198
Lease liability | 20,614 | 22,424
Fixed assets and intangibles | 836 | 6,091
Gross deferred tax assets | 436,576 | 215,831
Valuation allowance | (349,093) | (160,450)
Total deferred tax assets | 87,483 | 55,381
Deferred tax liabilities |  |
Intangibles | (28,529) | 0
Deferred sales commissions | (32,857) | (27,166)
Convertible debt | (12,066) | (12,695)
Lease asset | (14,145) | (15,520)
Net deferred taxes | $ (114) | $ 0

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