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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Statement of Financial Position [Abstract]    
Amortized cost $ 3,526,455 $ 3,755,297
Fair Value, Held-to-maturity $ 1,969,318 $ 2,155,587
Common stock, authorized 225,000,000 225,000,000
Common stock, shares issued 139,337,699 139,818,703
Common stock, shares outstanding 139,337,699 139,818,703