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AGENCY MORTGAGE-BACKED SECURITIES
6 Months Ended
Jun. 30, 2011
AGENCY MORTGAGE-BACKED SECURITIES
2.           AGENCY MORTGAGE-BACKED SECURITIES

      The following tables present the Company’s available-for-sale Agency Mortgage-Backed Securities portfolio as of June 30, 2011 and December 31, 2010 which were carried at their fair value:
 
 
June 30, 2011
 
Freddie Mac
   
Fannie Mae
   
Ginnie Mae
   
Total Agency Mortgage-Backed Securities
 
   
(dollars in thousands)
 
Mortgage-Backed
                       
 Securities, gross
  $ 25,057,495     $ 65,731,429     $ 943,757     $ 91,732,681  
Unamortized discount
    (12,488 )     (16,848 )     (401 )     (29,737 )
Unamortized premium
    660,423       2,323,888       33,454       3,017,765  
Amortized cost
    25,705,430       68,038,469       976,810       94,720,709  
                                 
Gross unrealized gains
    693,858       1,629,067       37,683       2,360,608  
Gross unrealized losses
    (38,608 )     (267,619 )     (1,642 )     (307,869 )
                                 
Estimated fair value
  $ 26,360,680     $ 69,399,917     $ 1,012,851     $ 96,773,448  
                                 
   
Amortized Cost
   
Gross Unrealized Gain
   
Gross Unrealized Loss
   
Estimated Fair Value
 
   
(dollars in thousands)
 
Adjustable rate
  $ 9,712,428     $ 345,634     $ (9,086 )   $ 10,048,976  
                                 
Fixed rate
    85,008,281       2,014,974       (298,783 )     86,724,472  
                                 
Total
  $ 94,720,709     $ 2,360,608     $ (307,869 )   $ 96,773,448  
 
 
December 31, 2010
 
Freddie Mac
   
Fannie Mae
   
Ginnie Mae
   
Total Agency Mortgage-Backed Securities
 
   
(dollars in thousands)
 
Mortgage-Backed
                       
 Securities, gross
  $ 19,846,543     $ 54,341,140     $ 824,029     $ 75,011,712  
Unamortized discount
    (14,651 )     (18,329 )     (403 )     (33,383 )
Unamortized premium
    517,507       1,795,116       26,200       2,338,823  
Amortized cost
    20,349,399       56,117,927       849,826       77,317,152  
                                 
Gross unrealized gains
    463,471       1,211,324       29,408       1,704,203  
Gross unrealized losses
    (140,027 )     (438,918 )     (2,080 )     (581,025 )
                                 
Estimated fair value
  $ 20,672,843     $ 56,890,333     $ 877,154     $ 78,440,330  
   
Amortized Cost
   
Gross Unrealized Gain
   
Gross Unrealized Loss
   
Estimated Fair Value
 
   
(dollars in thousands)
 
Adjustable rate
  $ 10,954,627     $ 257,822     $ (75,440 )   $ 11,137,009  
                                 
Fixed rate
    66,362,525       1,446,381       (505,585 )     67,303,321  
                                 
Total
  $ 77,317,152     $ 1,704,203     $ (581,025 )   $ 78,440,330  
 
      Actual maturities of Agency Mortgage-Backed Securities are generally shorter than stated contractual maturities because actual maturities of Agency Mortgage-Backed Securities are affected by the contractual lives of the underlying mortgages, periodic payments of principal, and prepayments of principal.  The following table summarizes the Company’s Agency Mortgage-Backed Securities on June 30, 2011 and December 31, 2010 according to their estimated weighted-average life classifications:
 
   
June 30, 2011
   
December 31, 2010
 
   
Fair Value
   
Amortized Cost
   
Fair Value
   
Amortized Cost
 
Weighted-Average Life
 
(dollars in thousands)
 
                         
Less than one year
  $ 780,883     $ 771,339     $ 915,398     $ 901,824  
Greater than one year and less than five years
    71,716,641       69,613,658       59,732,123       58,321,570  
Greater than or equal to five years
    24,275,924       24,335,712       17,792,809       18,093,758  
                                 
Total
  $ 96,773,448     $ 94,720,709     $ 78,440,330     $ 77,317,152  
 
      The weighted-average lives of the Agency Mortgage-Backed Securities at June 30, 2011 and December 31, 2010 in the table above are based upon data provided through subscription-based financial information services, assuming constant principal prepayment rates to the reset date of each security.  The prepayment model considers current yield, forward yield, steepness of the yield curve, current mortgage rates, mortgage rate of the outstanding loans, loan age, margin and volatility.  The actual weighted average lives of the Agency Mortgage-Backed Securities could be longer or shorter than estimated.
 
      The following table presents the gross unrealized losses, and estimated fair value of the Company’s Agency Mortgage-Backed Securities by length of time that such securities have been in a continuous unrealized loss position at June 30, 2011 and December 31, 2010.
 
   
Unrealized Loss Position For:
(dollars in thousands)
 
   
Less than 12 Months
   
12 Months or More
   
Total
 
   
Estimated
Fair Value
   
Unrealized
Losses
   
Estimated
Fair Value
   
Unrealized
Losses
   
Estimated
Fair Value
   
Unrealized
Losses
 
                                     
June 30, 2011
  $ 20,911,053     $ (302,761 )   $ 172,421     $ (5,108 )   $ 21,083,474     $ (307,869 )
December 31, 2010
  $ 28,608,996     $ (577,096 )   $ 166,481     $ (3,929 )   $ 28,775,477     $ (581,025 )
 
      The decline in value of these securities is solely due to market conditions and not the quality of the assets.  Substantially all of the Agency Mortgage-Backed Securities are “AAA” rated or carry an implied “AAA” rating.  The investments are not considered other-than-temporarily impaired because the Company currently has the ability and intent to hold the investments to maturity or for a period of time sufficient for a forecasted market price recovery up to or beyond the cost of the investments or we are not required to sell for regulatory or other reasons.  Also, the Company is guaranteed payment of the principal amount of the securities by the government agency which created them.
 
      During the quarter and six months ended June 30, 2011, the Company sold $1.6 billion and $4.6 billion of Agency Mortgage-Backed Securities, resulting in a realized gain of $5.9 million and $26.8 million, respectively.  During the quarter and six months ended June 30, 2010, the Company sold $1.4 billion and $3.0 billon of Agency Mortgage-Backed Securities, resulting in a realized gain of $37.8 million and $84.8 million respectively.
 
      Interest-only securities represent the right to receive a specified portion of the contractual interest flows of the underlying unamortized principal balance of specific Agency securities.  As of June 30, 2011, interest-only securities accounted for under the fair value option had unrealized gains of $276,000 and an amortized cost of $46.5 million.