Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds $ 459,388 $ 189,700 $ 1,274,260 $ 986,400
Available-for-sale Securities, Gross Realized Gains (Losses), Amortized Cost Sold 423,433 137,300 1,277,094 915,000
Available-for-sale Securities, Gross Realized Gains 35,954 52,439 43,163 75,665
Available-for-sale Securities, Gross Realized Losses 0 (1) (45,997) (4,297)
Available-for-sale Securities, Gross Realized Gain (Loss) $ 35,954 $ 52,438 $ (2,834) $ 71,368