Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Debt Securities, Available-for-sale [Abstract]    
Proceeds from sales of available-for-sale securities $ 2,050,943 $ 15,586,752
Amortized cost of available-for-sale securities sold (1,984,745) (16,621,468)
Gross realized gains 66,217 223,471
Gross realized losses (19) (1,258,187)
Total realized gains (losses) on sales, net $ 66,198 $ (1,034,716)