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Residential Whole Loans (Fair Value Components of Net Income) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Receivables [Abstract] |  |  |  |
Coupon payments and other income received | $ 20,176 | $ 17,634 | $ 61,060 | $ 52,034
Net unrealized gains | 13,185 | 8,442 | 33,312 | 26,788
Net gain on payoff/liquidation of loans | 2,026 | 3,251 | 6,906 | 10,203
Net gain on transfers to REO | 4,788 | 5,615 | 15,637 | 16,858
Total | $ 40,175 | $ 34,942 | $ 116,915 | $ 105,883

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