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Financing Agreements - Convertible Senior Notes (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 17, 2024
USD ($)
Jan. 31, 2024
USD ($)
Jun. 30, 2019
USD ($)
$ / shares
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Sep. 30, 2024
Jan. 11, 2024
Feb. 28, 2023
USD ($)
Convertible Debt | 6.25% Convertible Senior Notes                
Debt Instrument [Line Items]                
Proceeds from issuance of Series C Preferred Stock     $ 230,000,000          
Proceed from debt net of offering expenses and underwriting discount     $ 223,300,000          
Stated interest rate (as a percent)     6.25%     6.25%    
Conversion ratio     31.4346          
Debt instrument, face amount     $ 1,000          
Conversion price (in dollars per share) | $ / shares     $ 31.81          
Effective interest rate     6.94%          
Authorized repurchase amount               $ 100,000,000
Principal amount of debt repurchased       $ 39,900,000 $ 20,400,000      
Debt instrument, repurchase amount       39,800,000 20,200,000      
Gain (loss) on repurchase of debt instrument       $ (100,000) $ 100,000      
Senior Notes | 8.875% Senior Notes Due 2029                
Debt Instrument [Line Items]                
Proceed from debt net of offering expenses and underwriting discount   $ 110,600,000            
Stated interest rate (as a percent)   8.875%       8.875% 8.875%  
Debt instrument, face amount   $ 115,000,000            
Redemption price as percentage of principal amount   100.00%            
Effective interest rate   9.83%            
Senior Notes | 9.00% Senior Notes Due 2029                
Debt Instrument [Line Items]                
Proceed from debt net of offering expenses and underwriting discount $ 72,000,000              
Stated interest rate (as a percent) 9.00%         9.00%    
Debt instrument, face amount $ 75,000,000              
Redemption price as percentage of principal amount 100.00%              
Effective interest rate 9.94%