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Real Estate Securities - Gross Realized Gains and Losses on Sales and Calls of Available for Sale Securities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Total Realized Gains on Sales and Calls of AFS Securities, net | $ 26 | $ 0 | $ 1,502 | $ 1,914
Sales |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Gross realized gains | 103 | 0 | 3,917 | 0
Gross realized loss | (77) | 0 | (2,415) | 0
Calls |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Gross realized gains | 0 | 0 | 0 | 1,914
Gross realized loss | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-9 + Details
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-9 + Details
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