Real Estate Securities - Schedule of Carrying Value of AFS Securities by Type (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Debt and Equity Securities, FV-NI [Line Items]
Allowance for credit losses	$ (4,359)	$ (1,066)	$ (854)	$ (921)
AFS	294,250	287,557
Subordinate
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	271,082	260,381
Gross unrealized gains	30,721	31,334
Gross unrealized losses	(3,194)	(3,092)
Allowance for credit losses	(4,359)	(1,066)
AFS	$ 294,250	$ 287,557