Quarterly report pursuant to Section 13 or 15(d)

Schedule of Real Estate Securities with a deteriorated credit quality rating (Details)

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Schedule of Real Estate Securities with a deteriorated credit quality rating (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Schedule Of Real Estate Securities With Deteriorated Credit Quality Rating Details    
Real estate securities acquired with credit quality deterioration, face amount $ 692,140 $ 342,013
Real estate securities acquired with credit quality deterioration, carrying value $ 436,458 $ 212,129