XML 171 R139.htm IDEA: XBRL DOCUMENT v3.24.0.1
Parent Corporation Balance Sheets (Details) - USD ($)
$ / shares in Units, $ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Fixed income securities, available-for-sale, allowance for credit loss $ 28,212 $ 45,721 $ 9,724
Fixed income securities, available-for-sale, amortized cost $ 7,880,697 $ 7,185,754  
Preferred Stock, Par or Stated Value (in dollars per share) $ 0 $ 0  
Preferred Stock, Liquidation Preference (in dollars per share) $ 25,000 $ 25,000  
Preferred Stock, Shares Authorized 5,000,000 5,000,000  
Preferred Stock, Shares Issued 8,000 8,000  
Common Stock, Par or Stated Value (in dollars per share) $ 2 $ 2  
Common Stock, Shares Authorized 360,000,000 360,000,000  
Common Stock, Shares, Issued 105,223,307 104,847,111  
Treasury Stock, Shares 44,586,870 44,508,211  
Parent Company [Member]      
Fixed income securities, available-for-sale, allowance for credit loss $ 426 $ 1,194  
Fixed income securities, available-for-sale, amortized cost $ 443,261 $ 418,588