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Investments Trading Securities Net Gains (Losses) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]    
Debt Securities, Trading, Unrealized Gain (Loss) $ (15,106) $ 25,360
Debt Securities, Trading, Realized Gain (Loss) 1,312 0
Debt Securities, Trading, Gain (Loss) $ (13,794) $ 25,360