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STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY - Stock Purchase Right and Restricted Stock Unit Activity (Details) - $ / shares
shares in Thousands
 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Restricted stock units and Performance stock units        
Number of Shares        
Beginning balance (in shares) 12,993 9,375 8,646  
Granted (in shares) 7,186 13,297 8,333  
Vested and released (in shares) (7,613) (5,275) (5,146)  
Forfeited (in shares) (2,241) (4,404) (2,458)  
Ending balance (in shares) 10,325 12,993 9,375 8,646
Weighted Average Grant Date Fair Value        
Beginning balance (in dollars per share) $ 8.56 $ 20.41 $ 19.27  
Granted (in dollars per share) 3.85 5.71 21.37  
Vested and released (in dollars per share) 8.87 19.18 19.82  
Forfeited (in dollars per share) 7.13 12.46 20.85  
Ending balance (in dollars per share) $ 5.36 $ 8.56 $ 20.41 $ 19.27
Weighted Average Remaining Contractual Term (in Years) 1 year 9 months 1 year 10 months 2 days 2 years 1 month 9 days 1 year 10 months 6 days
Performance Stock Units        
Number of Shares        
Beginning balance (in shares) 624 1,026 1,576  
Granted (in shares) 2,023 853 497  
Granted for performance achievement (in shares)   24 20  
Vested and released (in shares)   (128) (250)  
Forfeited (in shares) (116) (1,151) (817)  
Ending balance (in shares) 2,531 624 1,026 1,576
Weighted Average Grant Date Fair Value        
Beginning balance (in dollars per share) $ 11.30 $ 35.36 $ 27.33  
Granted (in dollars per share) 3.25 7.31 30.41  
Granted for performance achievement (in dollars per share)   7.31 30.41  
Vested and released (in dollars per share)   25.65 17.15  
Forfeited (in dollars per share) 21.83 28.11 23.45  
Ending balance (in dollars per share) $ 4.38 $ 11.30 $ 35.36 $ 27.33
Weighted Average Remaining Contractual Term (in Years) 1 year 1 month 28 days 1 year 5 months 12 days 10 months 20 days 1 year 2 months 26 days