Quarterly report pursuant to Section 13 or 15(d)

Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details)

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Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Debt Securities, Available-for-Sale [Abstract]    
Proceeds from sales of available-for-sale securities $ 1,360,742 $ 2,012,620
Amortized cost of available-for-sale securities sold (1,393,484) (2,067,471)
Total realized losses on sales, net (32,742) (54,851)
Gross realized gains 14,070 14,695
Gross realized losses $ (46,812) $ (69,546)