v3.22.4
Borrowings - Schedule of Long-term Debt (Details) - USD ($)
Dec. 31, 2022
Oct. 31, 2022
Oct. 13, 2022
Sep. 30, 2022
Sep. 30, 2019
Oct. 31, 2017
Mar. 31, 2017
Debt Instrument [Line Items]              
Total outstanding borrowings of unconsolidated entities $ 984,330,000     $ 983,440,000      
Unamortized debt issuance costs $ (6,907,000)     (7,280,000)      
6.750% | Senior Notes              
Debt Instrument [Line Items]              
Stated interest rate on debt instrument 6.75%           6.75%
5.875% | Senior Notes              
Debt Instrument [Line Items]              
Stated interest rate on debt instrument 5.875%         5.875%  
7.250% | Senior Notes              
Debt Instrument [Line Items]              
Stated interest rate on debt instrument 7.25%       7.25%    
Secured Revolving Credit Facility              
Debt Instrument [Line Items]              
Credit facility, maximum borrowing capacity   $ 250,000,000 $ 265,000,000        
Secured Revolving Credit Facility $ 0     0      
Letters of credit secured using cash collateral 0     5,500,000      
Line of credit facility, remaining borrowing capacity 265,000,000     244,500,000      
Senior Notes              
Debt Instrument [Line Items]              
Total outstanding borrowings of unconsolidated entities 911,543,000     911,170,000      
Unamortized debt issuance costs (6,907,000)     (7,280,000)      
Senior Notes | 6.750%              
Debt Instrument [Line Items]              
Total outstanding borrowings of unconsolidated entities 211,195,000     211,195,000      
Senior Notes | 5.875%              
Debt Instrument [Line Items]              
Total outstanding borrowings of unconsolidated entities 357,255,000     357,255,000      
Senior Notes | 7.250%              
Debt Instrument [Line Items]              
Total outstanding borrowings of unconsolidated entities 350,000,000     350,000,000      
Junior Subordinated Notes              
Debt Instrument [Line Items]              
Total outstanding borrowings of unconsolidated entities $ 72,787,000     $ 72,270,000