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Asset-Backed Securities Issued (Tables) | 12 Months Ended
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Dec. 31, 2019
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 our consolidated securitization entities at December 31, 2019 and December 31, 2018, along with other selected information, are summarized in the following table. Table 14.1 – Asset-Backed Securities Issued
|  | December 31, 2019
(Dollars in Thousands) |  | Legacy Sequoia |  | Sequoia Choice |  | Freddie Mac SLST |  | Freddie Mac K-Series |  | CAFL |  | Total
Certificates with principal balance |  | $ | 420,056 |  |  | $ | 1,979,719 |  |  | $ | 1,842,682 |  |  | $ | 3,844,789 |  |  | $ | 1,875,007 |  |  | $ | 9,962,253 |
Interest-only certificates |  | 1,282 |  |  | 16,514 |  |  | 30,291 |  |  | 217,891 |  |  | 90,134 |  |  | 356,112 |
Market valuation adjustments |  | (18,873 | ) |  | 40,965 |  |  | 45,349 |  |  | 93,559 |  |  | 36,110 |  |  | 197,110 |
ABS Issued, Net |  | $ | 402,465 |  |  | $ | 2,037,198 |  |  | $ | 1,918,322 |  |  | $ | 4,156,239 |  |  | $ | 2,001,251 |  |  | $ | 10,515,475 |
Range of weighted average interest rates, by series |  | 1.94% to 3.26% |  |  | 4.40% to 5.05% |  |  | 3.50 | % |  | 3.35% to 4.35% |  |  | 3.25% to 5.36% |  |  |
Stated maturities |  | 2024 - 2036 |  |  | 2047 - 2049 |  |  | 2028 - 2029 |  |  | 2025 - 2049 |  |  | 2022 - 2048 |  |  |
Number of series |  | 20 |  |  | 9 |  |  | 2 |  |  | 5 |  |  | 10 |  |  |
|  | December 31, 2018
(Dollars in Thousands) |  | Legacy Sequoia |  | Sequoia Choice |  | Freddie Mac SLST |  | Freddie Mac K-Series |  | CAFL |  | Total
Certificates with principal balance |  | $ | 540,456 |  |  | $ | 1,838,758 |  |  | $ | 993,659 |  |  | $ | 1,936,691 |  |  | $ | — |  |  | $ | 5,309,564 |
Interest-only certificates |  | 1,537 |  |  | 25,662 |  |  | — |  |  | 131,600 |  |  | — |  |  | 158,799 |
Market valuation adjustments |  | (29,753 | ) |  | 20,590 |  |  | 89 |  |  | (49,216 | ) |  | — |  |  | (58,290 | )
ABS Issued, Net |  | $ | 512,240 |  |  | $ | 1,885,010 |  |  | $ | 993,748 |  |  | $ | 2,019,075 |  |  | $ | — |  |  | $ | 5,410,073 |
Range of weighted average interest rates, by series |  | 1.36% to 3.60% |  |  | 4.46% to 4.97% |  |  | 3.51 | % |  | 3.39% to 4.08% |  |  | — | % |  |
Stated maturities |  | 2024 - 2036 |  |  | 2047 - 2048 |  |  | 2028 |  |  | 2025 - 2049 |  |  | — |  |  |
Number of series |  | 20 |  |  | 6 |  |  | 1 |  |  | 3 |  |  | — |  |  |
Schedule of Interest Payable On Asset-Backed Securities Issued | The following table summarizes the accrued interest payable on ABS issued at December 31, 2019 and December 31, 2018. Interest due on consolidated ABS issued is payable monthly. Table 14.2 – Accrued Interest Payable on Asset-Backed Securities Issued
(In Thousands) |  | December 31, 2019 |  | December 31, 2018
Legacy Sequoia |  | $ | 395 |  |  | $ | 571 |
Sequoia Choice |  | 7,732 |  |  | 7,180 |
Freddie Mac SLST |  | 5,374 |  |  | 2,907 |
Freddie Mac K-Series |  | 12,887 |  |  | 6,239 |
CAFL |  | 7,298 |  |  | — |
Total Accrued Interest Payable on ABS Issued |  | $ | 33,686 |  |  | $ | 16,897 |
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, 2019 and December 31, 2018. Table 14.3 – Collateral for Asset-Backed Securities Issued
|  | December 31, 2019
(In Thousands) |  | Legacy Sequoia |  | Sequoia Choice |  | Freddie Mac SLST |  | Freddie Mac K-Series |  | CAFL |  | Total
Residential loans |  | $ | 407,890 |  |  | $ | 2,291,463 |  |  | $ | 2,367,215 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,066,568 |
Business purpose residential loans |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,192,552 |  |  | 2,192,552 |
Multifamily loans |  | — |  |  | — |  |  | — |  |  | 4,408,524 |  |  | — |  |  | 4,408,524 |
Restricted cash |  | 143 |  |  | 27 |  |  | — |  |  | — |  |  | — |  |  | 170 |
Accrued interest receivable |  | 655 |  |  | 9,824 |  |  | 7,313 |  |  | 13,539 |  |  | 9,572 |  |  | 40,903 |
REO |  | 460 |  |  | — |  |  | 445 |  |  | — |  |  | 1,795 |  |  | 2,700 |
Total Collateral for ABS Issued |  | $ | 409,148 |  |  | $ | 2,301,314 |  |  | $ | 2,374,973 |  |  | $ | 4,422,063 |  |  | $ | 2,203,919 |  |  | $ | 11,711,417 |
|  | December 31, 2018
(In Thousands) |  | Legacy Sequoia |  | Sequoia Choice |  | Freddie Mac SLST |  | Freddie Mac K-Series |  | CAFL |  | Total
Residential loans |  | $ | 519,958 |  |  | $ | 2,079,382 |  |  | $ | 1,222,669 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,822,009 |
Multifamily loans |  | — |  |  | — |  |  | — |  |  | 2,144,598 |  |  | — |  |  | 2,144,598 |
Restricted cash |  | 146 |  |  | 1,022 |  |  | — |  |  | — |  |  | — |  |  | 1,168 |
Accrued interest receivable |  | 822 |  |  | 8,988 |  |  | 3,926 |  |  | 6,595 |  |  | — |  |  | 20,331 |
REO |  | 3,943 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 3,943 |
Total Collateral for ABS Issued |  | $ | 524,869 |  |  | $ | 2,089,392 |  |  | $ | 1,226,595 |  |  | $ | 2,151,193 |  |  | $ | — |  |  | $ | 5,992,049 |

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