Quarterly report pursuant to Section 13 or 15(d)

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

v3.4.0.3
Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds $ 2,270,454 $ 900,106
Available-for-sale Securities, Gross Realized Gains (Losses), Amortized Cost Sold 2,248,753 782,639
Available-for-sale Securities, Gross Realized Gains 35,194 117,688
Available-for-sale Securities, Gross Realized Losses (13,493) (220)
Available-for-sale Securities, Gross Realized Gain (Loss) $ 21,701 $ 117,468