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Debt - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Jul. 12, 2021
Jul. 11, 2021
Debt Instrument [Line Items]        
Purchase of FHLB activity-based common stock as percentage of borrowing, required 4.50%      
Purchase of FHLB activity-based common stock as percentage of borrowing, percentage, authorized   25.00%    
Minimum        
Debt Instrument [Line Items]        
Purchase of FHLB activity-based common stock as percentage of borrowing, required 2.00%      
4.50% Senior Notes        
Debt Instrument [Line Items]        
Principal amount $ 250,000,000.0 $ 250,000,000.0    
Stated rate 4.50% 4.50%    
Discount percent on issuance 0.265%      
Effective interest percentage 4.53%      
Debt redemption price, percentage 100.00%      
Debt redemption price, interest discounted at treasury yield margin 0.35%      
Line of Credit        
Debt Instrument [Line Items]        
Borrowing capacity     $ 325,000,000 $ 225,000,000
Senior revolving credit facility $ 249,000,000      
Line of credit facility, commitment fee amount $ 76,000,000      
Commitment fee percent 0.15%      
Line of Credit | London Interbank Offered Rate (LIBOR)        
Debt Instrument [Line Items]        
Basis spread on variable rate 1.15%