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Debt (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Feb. 16, 2023
Debt Instrument [Line Items]        
Loss on debt refinancing $ 4,993,000 $ 56,209,000 $ 36,987,000  
Federal Home Loan Bank Certificates and Obligations (FHLB)        
Debt Instrument [Line Items]        
Purchase an equity interest 1,000,000      
Interest rate swaps        
Debt Instrument [Line Items]        
Total notional amount of outstanding contracts $ 200,000,000      
Fixed interest rate 0.56%      
Notes due        
Debt Instrument [Line Items]        
Debt redeemed $ 24,000,000      
Line of credit | Revolving Credit Facility        
Debt Instrument [Line Items]        
Maximum borrowing capacity 500,000,000      
Borrowings under facility 0      
Notes due April 2023 | Notes due        
Debt Instrument [Line Items]        
Loss on debt refinancing $ 5,000,000      
Interest rate 6.20%      
Notes due March 2024 and March 2027 | Forecast | Notes due        
Debt Instrument [Line Items]        
Purchase of debt       $ 12,000,000
Notes due March 2024 | Notes due        
Debt Instrument [Line Items]        
Purchase of debt $ 6,000,000      
Interest rate 4.625%      
Notes due March 2027 | Notes due        
Debt Instrument [Line Items]        
Purchase of debt $ 3,000,000      
Interest rate 6.875%      
Term loan due March 2026 | Notes due        
Debt Instrument [Line Items]        
Interest rate 6.40%      
Term loan due March 2028 | Notes due        
Debt Instrument [Line Items]        
Interest rate 8.40%