Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.6
Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds $ 9,368   $ 207,083  
Available-for-sale Securities, Gross Realized Gains (Losses), Amortized Cost Sold 9,590   197,269  
Available-for-sale Securities, Gross Realized Gains 0 27,472 11,663 29,422
Available-for-sale Securities, Gross Realized Losses (221) 0 (1,850) (265)
Available-for-sale Securities, Gross Realized Gain (Loss) $ (221) $ 27,472 $ 9,813 $ 29,157