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Net Interest Income (Tables) | 12 Months Ended
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Dec. 31, 2020
Banking and Thrift, Interest [Abstract] |
Interest Income and Interest Expense Disclosure | The following table details the components of the Company's interest income and interest expense for the years ended December 31, 2020, 2019 and 2018, respectively (dollar amounts in thousands):
| For the Years Ended December 31,
| 2020 |  | 2019 |  | 2018
Interest income |  |  |  |  |
Residential loans |  |  |  |  |
Residential loans | $ | 69,170 |  |  | $ | 63,031 |  |  | $ | 19,659 |
Consolidated SLST | 45,194 |  |  | 4,764 |  |  | — |
Residential loans held in securitization trusts | 12,612 |  |  | 3,222 |  |  | 8,910 |
Total residential loans | 126,976 |  |  | 71,017 |  |  | 28,569 |
Multi-family loans |  |  |  |  |
Preferred equity and mezzanine loan investments | 20,899 |  |  | 20,899 |  |  | 21,036 |
Consolidated K-Series | 151,841 |  |  | 535,226 |  |  | 358,712 |
Total multi-family loans | 172,740 |  |  | 556,125 |  |  | 379,748 |
Investment securities available for sale | 49,925 |  |  | 65,486 |  |  | 47,147 |
Other | 520 |  |  | 1,986 |  |  | 335 |
Total interest income | 350,161 |  |  | 694,614 |  |  | 455,799 |
Interest expense |  |  |  |  |
Repurchase agreements | 37,334 |  |  | 90,110 |  |  | 43,219 |
Collateralized debt obligations |  |  |  |  |
Consolidated SLST | 31,663 |  |  | 2,945 |  |  | — |
Consolidated K-Series | 129,762 |  |  | 457,130 |  |  | 313,102 |
Residential loan securitizations | 6,967 |  |  | 1,682 |  |  | 3,623 |
Non-Agency RMBS and CMBS re-securitizations | 3,290 |  |  | 494 |  |  | 2,910 |
Total collateralized debt obligations | 171,682 |  |  | 462,251 |  |  | 319,635 |
Convertible debt | 10,997 |  |  | 10,813 |  |  | 10,643 |
Subordinated debentures | 2,187 |  |  | 2,865 |  |  | 2,743 |
Derivatives | 868 |  | 711 |  | 831 |
Total interest expense | 223,068 |  |  | 566,750 |  |  | 377,071 |
Net interest income | $ | 127,093 |  |  | $ | 127,864 |  |  | $ | 78,728 |

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- Definition Tabular disclosure of interest income and expense, including, but not limited to, interest income and expense from investments, loans, and securities. + References No definition available. + Details
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