Investment Securities - Available-for-Sale RMBS (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 87,962	$ 92,431
Credit Loss Allowance	0	0
Net Basis	87,962	92,431
Gross Unrealized Gains	17,182	21,765
Gross Unrealized Losses	(3,068)	(810)
Net Fair Value Adjustment	14,114	20,955
Fair Value	$ 102,076	$ 113,386
Available-for-sale | SOFR
Debt Securities, Available-for-sale [Line Items]
Effective variable rate basis	5.319%
RMBS | B- Rating | Available-for-sale
Debt Securities, Available-for-sale [Line Items]
Weighted Average Coupon	5.80%
WAL (Years)	7 years 4 months 24 days