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CONVERTIBLE SENIOR NOTES AND CAPPED CALLS - Narrative (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 ($)
day
$ / shares
shares
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Mar. 31, 2021
USD ($)
Dec. 01, 2019
USD ($)
Debt Instrument [Line Items]              
Net proceeds from issuance of convertible debt       $ 134,620,000 $ 0    
Convertible Debt | Convertible Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, face value     $ 287,500,000        
Debt instrument, interest rate     0.50%        
Net proceeds from issuance of convertible debt $ 134,300,000   $ 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 | day     20        
Debt instrument, convertible, threshold consecutive trading days | day     30        
Debt instrument, convertible, threshold percentage of stock price trigger     130.00%        
Debt instrument, convertible, measurement period | day     5        
Debt instrument, convertible, threshold consecutive trading days preceding measurement period | day     10        
Debt instrument, threshold percentage of sales price per share     98.00%        
Debt instrument, redemption price, percentage     100.00%        
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 | Additional Notes              
Debt Instrument [Line Items]              
Debt instrument, face value $ 137,500,000 $ 75,000,000   $ 137,500,000      
Debt instrument, interest rate 0.50% 0.50%   0.50%      
Net proceeds from issuance of convertible debt   $ 64,600,000          
Convertible Debt | Aggregate Notes              
Debt Instrument [Line Items]              
Debt instrument, face value $ 500,000,000     $ 500,000,000   $ 362,500,000 $ 500,000,000
Debt instrument, redemption price, percentage     100.00%        
Convertible Debt | Call Option | Convertible Senior Notes              
Debt Instrument [Line Items]              
Option indexed to issuer's equity, indexed shares (in shares) | shares     14.1