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CONVERTIBLE SENIOR NOTES, TERM LOAN AND CAPPED CALLS - 2024 Notes and Capped Call (Details)
$ / shares in Units, shares in Millions
1 Months Ended 9 Months Ended
Dec. 31, 2021
USD ($)
Nov. 30, 2019
USD ($)
Feb. 28, 2019
USD ($)
d
$ / shares
shares
Dec. 31, 2022
USD ($)
Aug. 10, 2022
USD ($)
Apr. 01, 2022
USD ($)
Mar. 31, 2022
USD ($)
Debt Instrument [Line Items]              
Accumulated deficit       $ 783,478,000     $ 766,438,000
Additional paid-in capital       (888,123,000)     (956,599,000)
Convertible Debt | Accounting Standards Update 2020-06              
Debt Instrument [Line Items]              
Accumulated deficit           $ 46,700,000  
Additional paid-in capital           92,800,000  
Convertible senior notes           $ 46,200,000  
Convertible Debt | Convertible Senior Notes 2024              
Debt Instrument [Line Items]              
Debt instrument, face value     $ 287,500,000 $ 68,339,000 $ 403,800,000   $ 500,000,000
Debt instrument, interest rate     0.50%        
Net proceeds from term loan     $ 245,800,000        
Debt instrument, convertible, conversion ratio     0.0389484        
Common stock, par value per share (in dollars per share) | $ / shares     $ 0.001        
Debt instrument, convertible, conversion price (in dollars per share) | $ / shares     $ 25.68        
Debt instrument, convertible, threshold trading days | d     20        
Debt instrument, convertible, threshold consecutive trading days | d     30        
Debt instrument, convertible, threshold percentage of stock price trigger     130.00%        
Debt instrument, convertible, measurement period | d     5        
Debt instrument, convertible, threshold consecutive trading days preceding measurement period | d     10        
Debt instrument, threshold percentage of sales price per share     98.00%        
Debt instrument, redemption price, percentage     100.00%        
Unamortized debt discount and issuance costs       13 months      
Debt instrument, strike price per share (in dollars per share) | $ / shares     $ 25.68        
Debt instrument, initial cap price per share (in dollars per share) | $ / shares     $ 39.50        
Convertible Debt | Convertible Senior Notes 2024 | Call Option              
Debt Instrument [Line Items]              
Option indexed to issuer's equity, indexed shares (in shares) | shares     14.1        
Convertible Debt | First Additional Notes              
Debt Instrument [Line Items]              
Debt instrument, face value   $ 75,000,000          
Debt instrument, interest rate   0.50%          
Net proceeds from term loan   $ 64,600,000          
Convertible Debt | Second Additional Notes              
Debt Instrument [Line Items]              
Debt instrument, face value $ 137,500,000            
Debt instrument, interest rate 0.50%            
Net proceeds from term loan $ 134,300,000            
Convertible Debt | Aggregate Notes              
Debt Instrument [Line Items]              
Debt instrument, face value $ 500,000,000.0