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Match Funded Advances - Schedule of Match Funded Advances on Residential Loans (Details) - Residential Mortgage [Member] - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Sep. 30, 2014
Dec. 31, 2013
Match Funded Advances [Line Items]        
Principal and interest $ 1,066,125 $ 1,349,048    
Taxes and insurance 714,505 847,064    
Foreclosures, bankruptcy, real estate and other 174,988 213,330    
Match funded advances $ 1,955,618 $ 2,409,442 $ 2,359,579 $ 2,552,383