Annual report pursuant to Section 13 and 15(d)

Schedule of Available-for-Sale Securities Reconciliation (Details)

v2.4.0.8
Schedule of Available-for-Sale Securities Reconciliation (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale securities, at fair value $ 12,256,727 $ 13,666,954
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
   
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Face Value 11,919,590 11,934,492
Available-for-sale Securities, Unamortized Premium 621,279 749,252
Available-for-sale Securities, Designated Credit Reserve 0 0
Available-for-sale Securities, Net, Unamortized (2,897,222) (1,929,811)
Available-for-sale Securities, Amortized Cost Basis 9,643,647 10,753,933
Available-for-sale Securities, Unrealized Gains 102,600 276,293
Available-for-sale Securities, Unrealized Losses 248,838 18,123
Available-for-sale securities, at fair value 9,497,409 11,012,103
Mortgage-backed Securities, Issued by Private Enterprises [Member]
   
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Face Value 4,474,353 4,503,999
Available-for-sale Securities, Unamortized Premium 0 0
Available-for-sale Securities, Designated Credit Reserve (1,234,449) (1,290,946)
Available-for-sale Securities, Net, Unamortized (1,071,559) (996,490)
Available-for-sale Securities, Amortized Cost Basis 2,168,345 2,216,563
Available-for-sale Securities, Unrealized Gains 595,179 448,403
Available-for-sale Securities, Unrealized Losses 4,206 10,115
Available-for-sale securities, at fair value 2,759,318 2,654,851
Collateralized Mortgage Backed Securities [Member]
   
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Face Value 16,393,943 16,438,491
Available-for-sale Securities, Unamortized Premium 621,279 749,252
Available-for-sale Securities, Designated Credit Reserve (1,234,449) (1,290,946)
Available-for-sale Securities, Net, Unamortized (3,968,781) (2,926,301)
Available-for-sale Securities, Amortized Cost Basis 11,811,992 12,970,496
Available-for-sale Securities, Unrealized Gains 697,779 724,696
Available-for-sale Securities, Unrealized Losses 253,044 28,238
Available-for-sale securities, at fair value $ 12,256,727 $ 13,666,954