Real Estate Securities - Schedule of Components of Fair Value of Available for Sale Securities by Holding Periods (Details) - Residential - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Consecutive Months, Fair Value	$ 15,077	$ 2,374
Less Than 12 Consecutive Months, Unrealized Losses	(44)	(128)
12 Consecutive Months or Longer, Fair Value	20,809	27,299
12 Consecutive Months or Longer, Unrealized Losses	$ (4,269)	$ (6,625)