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Equity-Method Investment And Other Assets (Schedule of Equity-Method Investment and Other Assets) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Equity Method Investments And Other Assets [Abstract]    
Equity-method investment in OpCo $ 0 $ 7,657
Accounts receivable and other assets 4,057 3,256
Replacement reserve and tax escrows - Fannie Mae 8,265 4,631
Equity-method investment and other assets $ 12,322 $ 15,544