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Asset-Backed Securities Issued (Tables) | 12 Months Ended
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Dec. 31, 2017
Debt Disclosure [Abstract] |
Carrying Value of ABS Issued by Consolidated Securitization Entities Sponsored, along with Other Selected Information | The carrying values of ABS issued by Sequoia securitization entities we sponsored at December 31, 2017 and December 31, 2016, along with other selected information, are summarized in the following table. Table 12.1 – Asset-Backed Securities Issued
|  | December 31, 2017 |  | December 31, 2016
(Dollars in Thousands) |  | Legacy Sequoia |  | Sequoia Choice |  | Total |  | Legacy Sequoia |  | Sequoia Choice |  | Total
Certificates with principal balance |  | $ | 691,125 |  |  | $ | 526,657 |  |  | $ | 1,217,782 |  |  | $ | 880,517 |  |  | $ | — |  |  | $ | 880,517 |
Interest-only certificates |  | 1,972 |  |  | 7,695 |  |  | 9,667 |  |  | 3,774 |  |  | — |  |  | 3,774 |
Market valuation adjustments |  | (70,652 | ) |  | 7,788 |  |  | (62,864 | ) |  | (110,829 | ) |  | — |  |  | (110,829 | )
ABS Issued, Net |  | $ | 622,445 |  |  | $ | 542,140 |  |  | $ | 1,164,585 |  |  | $ | 773,462 |  |  | $ | — |  |  | $ | 773,462 |
Range of weighted average interest rates, by series |  | 1.46% to 2.78% |  |  | 4.52% to 4.73% |  |  |  |  | 0.74% to 2.23% |  |  | — | % |  |
Stated maturities |  | 2024 - 2036 |  |  | 2047 |  |  |  |  | 2024 - 2036 |  |  | N/A |  |  |
Number of series |  | 20 |  |  | 2 |  |  |  |  | 20 |  |  | — |  |  |
Summary of Carrying Value Components of Collateral for ABS Issued and Outstanding | The following table summarizes the carrying value components of the collateral for ABS issued and outstanding at December 31, 2017 and December 31, 2016. Table 12.2 – Collateral for Asset-Backed Securities Issued
|  | December 31, 2017 |  | December 31, 2016
(In Thousands) |  | Legacy Sequoia |  | Sequoia Choice |  | Total |  | Legacy Sequoia |  | Sequoia Choice |  | Total
Residential loans |  | $ | 632,817 |  |  | $ | 620,062 |  |  | $ | 1,252,879 |  |  | $ | 791,636 |  |  | $ | — |  |  | $ | 791,636 |
Restricted cash |  | 147 |  |  | 4 |  |  | 151 |  |  | 148 |  |  | — |  |  | 148 |
Accrued interest receivable |  | 867 |  |  | 2,524 |  |  | 3,391 |  |  | 1,000 |  |  | — |  |  | 1,000 |
REO |  | 3,353 |  |  | — |  |  | 3,353 |  |  | 5,533 |  |  | — |  |  | 5,533 |
Total Collateral for ABS Issued |  | $ | 637,184 |  |  | $ | 622,590 |  |  | $ | 1,259,774 |  |  | $ | 798,317 |  |  | $ | — |  |  | $ | 798,317 |

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