Quarterly report pursuant to Section 13 or 15(d)

Schedule of Available-for-sale Securities Reconciliation, Non-Agency Unamortized Net Discount and Designated Credit Reserves (Details)

v2.4.0.6
Schedule of Available-for-sale Securities Reconciliation, Non-Agency Unamortized Net Discount and Designated Credit Reserves (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Available-for-sale Securities, Designated Credit Reserve [Member]
    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Unamortized Discount, Beginning Balance $ (782,606) $ (145,855)
Available-for-sale Securities, Unamortized Discount, Acquisitions (553,552) (249,153)
Available-for-sale Securities, Unamortized Discount, Accretion 250 0
Available-for-sale Securities, Unamortized Discount, Credit Losses 17,908 1,242
Available-for-sale Securities, Unamortized Discount, Other-than-temporary Impairment Adjustment (8,751) (294)
Available-for-sale Securities, Unamortized Discount, Transfers 0 66
Available-for-sale Securities, Unamortized Discount, Sales, Calls and Other 4,653 8,253
Available-for-sale Securities, Unamortized Discount, Ending Balance (1,322,098) (385,741)
Available-for-sale Securities, Net, Unamortized [Member]
    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Unamortized Discount, Beginning Balance (540,969) (129,992)
Available-for-sale Securities, Unamortized Discount, Acquisitions (479,435) (168,684)
Available-for-sale Securities, Unamortized Discount, Accretion 62,768 12,409
Available-for-sale Securities, Unamortized Discount, Credit Losses 0 0
Available-for-sale Securities, Unamortized Discount, Other-than-temporary Impairment Adjustment 0 0
Available-for-sale Securities, Unamortized Discount, Transfers 0 (66)
Available-for-sale Securities, Unamortized Discount, Sales, Calls and Other 13,338 5,618
Available-for-sale Securities, Unamortized Discount, Ending Balance (944,298) (280,715)
Available-for-sale Securities, Unamortized Discount [Member]
    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Unamortized Discount, Beginning Balance (1,323,575) (275,847)
Available-for-sale Securities, Unamortized Discount, Acquisitions (1,032,987) (417,837)
Available-for-sale Securities, Unamortized Discount, Accretion 63,018 12,409
Available-for-sale Securities, Unamortized Discount, Credit Losses 17,908 1,242
Available-for-sale Securities, Unamortized Discount, Other-than-temporary Impairment Adjustment (8,751) (294)
Available-for-sale Securities, Unamortized Discount, Transfers 0 0
Available-for-sale Securities, Unamortized Discount, Sales, Calls and Other 17,991 13,871
Available-for-sale Securities, Unamortized Discount, Ending Balance $ (2,266,396) $ (666,456)