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Convertible Notes (Details)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended
Nov. 03, 2021
shares
Oct. 22, 2021
USD ($)
$ / shares
Nov. 16, 2020
USD ($)
$ / shares
shares
Nov. 30, 2020
USD ($)
day
$ / shares
Mar. 31, 2024
USD ($)
shares
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
Debt Instrument [Line Items]              
Purchase of capped call options associated with convertible notes     $ 46.0 $ 46.0      
Prepayment of forward stock repurchase transaction     $ 55.0 55.0      
Underlying common stock (in shares) | shares     1,994,198        
Shares delivered to the company (in shares) | shares         448,698    
Capped Call | Common stock              
Debt Instrument [Line Items]              
Exercise price (in dollars per share) | $ / shares     $ 55.16        
Class of warrant or right, premium percentage     100.00%        
Convertible Senior Notes Due 2025 | Convertible Debt              
Debt Instrument [Line Items]              
Debt instrument, face amount       $ 280.0      
Debt instrument, stated interest rate       4.00%      
Proceeds from debt, net of issuance costs       $ 271.1      
Debt instrument, convertible, conversion ratio       30.2151      
Debt instrument, convertible, conversion price (in dollars per share) | $ / shares       $ 33.096      
Debt instrument, redemption price, percentage       100.00%      
Exchange Agreement, amount of principal amount converted into common stock   $ 15.0          
Exchange Agreement, weighted average price per share floor (in dollars per share) | $ / shares   $ 5.62          
Exchange Agreement, threshold trading days   5 days          
Common stock being exchanged (in shares) | shares 1,094,848            
Principal amount of convertible notes         $ 265.0    
Debt issuance costs         3.0    
Long-term debt         262.0    
Debt interest expense         3.1 $ 3.1  
Debt fair value         $ 220.4   $ 155.9
Convertible Senior Notes Due 2025 | Convertible Debt | Purchaser Discounts And Commissions And Offering Expenses Payable              
Debt Instrument [Line Items]              
Unamortized debt discount and issuance costs       $ 8.9      
Convertible Senior Notes Due 2025 | Convertible Debt | Period One              
Debt Instrument [Line Items]              
Debt instrument, convertible, threshold percentage of stock price trigger       130.00%      
Debt instrument, convertible, threshold trading days | day       20      
Average trading-day period | day       30      
Number of business days | day       5      
Number of consecutive trading days | day       5      
Debt instrument, convertible, threshold percentage of last reported sale price       98.00%      
Convertible Senior Notes Due 2025 | Convertible Debt | Period Two              
Debt Instrument [Line Items]              
Debt instrument, convertible, threshold percentage of stock price trigger       130.00%      
Debt instrument, convertible, threshold trading days | day       20      
Average trading-day period | day       30      
Debt instrument, redemption price, percentage       100.00%      
Debt instrument, required amount outstanding       $ 125.0