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Mortgage Servicing - Schedule of Composition of Servicing and Subservicing Portfolios by Type of Property Serviced (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Sep. 30, 2015
Schedule of Servicing and Subservicing Portfolio [Line Items]      
Servicing $ 206,615,310 $ 230,132,729 $ 238,108,447
Subservicing 10,428,124 20,938,651 50,141,579
Assets serviced 217,043,434 251,071,380 288,250,026
Residential [Member]      
Schedule of Servicing and Subservicing Portfolio [Line Items]      
Servicing 206,615,310 230,132,729 238,108,447
Subservicing 10,276,692 20,833,383 49,960,702
Assets serviced 216,892,002 250,966,112 288,069,149
Commercial [Member]      
Schedule of Servicing and Subservicing Portfolio [Line Items]      
Servicing 0 0 0
Subservicing 151,432 105,268 180,877
Assets serviced $ 151,432 $ 105,268 $ 180,877