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Real Estate Securities - Schedule of Available for Sale Securities by Collateral Type (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	$ 180,541		$ 79,635
Gross unrealized gains	30,000		16,973
Gross unrealized losses	(4,313)		(6,753)
Allowance for credit losses	(867)	$ (1,339)	(2,482)
Available-for-sale	205,361		87,373
Senior
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	32,217		0
Gross unrealized gains	139		0
Gross unrealized losses	0		0
Allowance for credit losses	0		0
Available-for-sale	32,356		0
Mezzanine
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	34,143		0
Gross unrealized gains	916		0
Gross unrealized losses	0		0
Allowance for credit losses	0		0
Available-for-sale	35,059		0
Subordinate
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	114,181		79,635
Gross unrealized gains	28,945		16,973
Gross unrealized losses	(4,313)		(6,753)
Allowance for credit losses	(867)		(2,482)
Available-for-sale	$ 137,946		$ 87,373

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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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