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Debt - Senior Secured Convertible Notes due 2027, Senior Secured Convertible Notes due 2031, and the Convertible Notes Exchange (Details)
 3 Months Ended 12 Months Ended
Oct. 15, 2024
USD ($)
component
$ / shares
shares
Mar. 31, 2025
USD ($)
shares
$ / shares
Mar. 31, 2024
USD ($)
Dec. 31, 2024
USD ($)
$ / shares
Nov. 17, 2020
$ / shares
Line of Credit Facility          
Aggregate principal amount $ 223,600,000        
Principal balance   $ 1,037,300,000   $ 1,111,800,000  
Common stock, par value (in dollars per share) | $ / shares   $ 0.01   $ 0.01  
2027 Notes | Convertible Debt          
Line of Credit Facility          
Stated interest rate (as a percent)         6.00%
Repurchased face amount 223,600,000        
Debt instrument, debt repurchased, rate per $1,000 1,110        
Repurchase amount $ 248,200,000        
Principal balance   $ 38,100,000   $ 38,100,000  
Common stock, par value (in dollars per share) | $ / shares $ 0.01        
Number of components | component 2        
Reduction in additional paid-in capital       237,500,000  
Fair value of equity component of debt   $ 42,000,000.0   42,000,000.0  
Aggregate shares receivable upon conversion (in shares) | shares   22,500,000      
Effective interest rate (as a percent)   10.50%      
Initial conversion rate (in shares) | shares   0      
2027 Notes | Convertible Debt | Fair Value, Inputs, Level 2          
Line of Credit Facility          
Debt fair value   $ 37,500,000   44,600,000  
2027 Notes | Convertible Debt | Period 1          
Line of Credit Facility          
Redemption rate (as a percent) 110.00%        
2027 Notes | Convertible Debt | Scenario, Plan          
Line of Credit Facility          
Initial conversion rate (in shares) | shares 200        
Conversion price (in dollars per share) | $ / shares $ 5.00       $ 5.00
Aggregate shares receivable upon conversion (in shares) | shares   7,600,000      
2031 Notes | Convertible Debt          
Line of Credit Facility          
Stated interest rate (as a percent) 6.00%        
Accrued and unpaid interest $ 10,000,000        
Principal balance $ 110,000 $ 223,700,000   223,700,000  
Common stock, par value (in dollars per share) | $ / shares $ 0.01        
Redemption rate (as a percent) 140.00%        
Debt redemption right, amount $ 72,800,000        
Debt redemption right, percentage of principal (as a percent) 30.00%        
Minimum qualified cash required $ 30,000,000.0        
Number of components | component 2        
Reduction in additional paid-in capital   $ 80,400,000   $ 80,400,000  
Aggregate shares receivable upon conversion (in shares) | shares   143,900,000      
Debt instrument, issued premium rate (as a percent) 50.00%        
Effective interest rate (as a percent)   6.60%      
Initial conversion rate (in shares) | shares   0      
2031 Notes | Convertible Debt | Period 1          
Line of Credit Facility          
Redemption rate (as a percent) 110.00%        
Total gross leverage ratio 1.5        
2031 Notes | Convertible Debt | Scenario, Plan          
Line of Credit Facility          
Initial conversion rate (in shares) | shares 200        
Conversion price (in dollars per share) | $ / shares $ 5.00        
Aggregate shares receivable upon conversion (in shares) | shares   44,700,000      
2027 Notes and the 2031 Notes | Convertible Debt          
Line of Credit Facility          
Interest expense   $ 3,900,000 $ 7,200,000    
Interest paid   0 0    
Amortization of the discount   500,000 3,600,000    
Amortization of debt issuance costs   $ 0 $ 0