Real Estate Securities - Carrying Value of AFS Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Principal balance	$ 221,933	$ 242,852
Credit reserve	(28,739)	(27,555)
Unamortized discount, net	(61,650)	(76,023)
Amortized cost	131,544	139,274
Gross unrealized gains	16,269	67,815
Gross unrealized losses	(13,127)	(297)
CECL allowance	(2,540)	0	$ (388)
Carrying Value	$ 132,146	$ 206,792

Debt Securities, Available For Sale, Credit Reserve

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Debt Securities, Available For Sale, Principal Balance

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Debt Securities, Available For Sale, Unamortized Discounts Premiums

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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