Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds $ 1,505,840 $ 1,671,909 $ 3,776,294 $ 2,572,016
Available-for-sale Securities, Gross Realized Gains (Losses), Amortized Cost Sold 1,495,970 1,596,046 3,744,723 2,378,685
Available-for-sale Securities, Gross Realized Gains 10,700 76,199 45,894 193,887
Available-for-sale Securities, Gross Realized Losses (830) (336) (14,323) (556)
Available-for-sale Securities, Gross Realized Gain (Loss) $ 9,870 $ 75,863 $ 31,571 $ 193,331