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Net Interest Income - Components of Interest Income and Interest Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Interest income | $ 68,020 | $ 52,186 | $ 126,521 | $ 102,225
Interest expense | 41,891 | 20,711 | 70,513 | 40,410
Total net interest income (expense) | 26,129 | 31,475 | 56,008 | 61,815
Convertible notes |  |  |  |
Interest expense | 0 | 2,788 | 438 | 5,572
Senior unsecured notes |  |  |  |
Senior unsecured notes | 1,607 | 1,136 | 3,210 | 1,136
Subordinated debentures |  |  |  |
Subordinated debentures | 550 | 459 | 1,008 | 916
Residential loans |  |  |  |
Interest income | 32,669 | 20,155 | 57,502 | 39,816
Consolidated SLST | VIE, Primary Beneficiary |  |  |  |
Interest income | 9,254 | 10,479 | 18,635 | 20,797
Interest expense | 6,208 | 7,151 | 12,186 | 14,254
Residential loans held in securitization trusts |  |  |  |
Interest income | 18,853 | 9,933 | 35,486 | 17,901
Total residential loans |  |  |  |
Interest income | 60,776 | 40,567 | 111,623 | 78,514
Multi-family loans |  |  |  |
Interest income | 2,834 | 4,130 | 5,785 | 8,531
Investment securities available for sale |  |  |  |
Investment securities available for sale | 4,331 | 7,475 | 9,006 | 15,150
Other |  |  |  |
Other | 79 | 14 | 107 | 30
Repurchase agreements |  |  |  |
Interest expense | 11,647 | 3,732 | 17,178 | 7,774
Residential loan securitizations |  |  |  |
Interest expense | 8,728 | 5,015 | 16,185 | 9,735
Non-Agency RMBS Re-Securitization |  |  |  |
Interest expense | 0 | 0 | 0 | 283
Total collateralized debt obligations |  |  |  |
Interest expense | 14,936 | 12,166 | 28,371 | 24,272
Mortgages payable on real estate |  |  |  |
Mortgages payable on real estate | $ 13,151 | $ 430 | $ 20,308 | $ 740

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- Definition Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.1-5) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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