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CONVERTIBLE SENIOR NOTES AND CAPPED CALL - Net Impact to Stockholders' Equity (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Feb. 28, 2019
Mar. 31, 2022
Mar. 31, 2020
Debt Instrument [Line Items]      
Total   $ 15,599 $ 3,094
Convertible Debt | Second Additional Notes      
Debt Instrument [Line Items]      
Conversion option   15,960  
Payments for capped call transactions   0  
Issuance costs   (361)  
Total   15,599  
Convertible Debt | First Additional Notes      
Debt Instrument [Line Items]      
Conversion option   12,810  
Payments for capped call transactions $ (9,300) (9,288)  
Issuance costs   (436)  
Total   3,086  
Convertible Debt | Initial Notes      
Debt Instrument [Line Items]      
Conversion option   66,700  
Payments for capped call transactions $ (33,700) (33,724)  
Issuance costs   (1,848)  
Total   $ 31,128