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Net Interest Income - Schedule of Components of Interest Income and Interest Expense (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Interest income | $ 83,892 | $ 57,136
Interest expense | 66,029 | 39,335
Total net interest income | 17,863 | 17,801
Senior unsecured notes |  |
Senior unsecured notes | 1,626 | 1,614
Subordinated debentures |  |
Subordinated debentures | 1,073 | 962
Residential loans |  |
Interest income | 11,689 | 16,954
Consolidated SLST | VIE, Primary Beneficiary |  |
Interest income | 8,127 | 8,733
Interest expense | 5,801 | 6,315
Residential loans held in securitization trusts |  |
Interest income | 26,931 | 24,721
Total residential loans |  |
Interest income | 46,747 | 50,408
Investment securities available for sale |  |
Investment securities available for sale | 32,903 | 3,169
Multi-family loans |  |
Interest income | 2,642 | 2,436
Other |  |
Other | 1,600 | 1,123
Repurchase agreements |  |
Interest expense | 39,153 | 13,068
Residential Loan Securitizations |  |
Interest expense | 18,376 | 17,376
Total collateralized debt obligations |  |
Interest expense | $ 24,177 | $ 23,691

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