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Investment Securities Available For Sale, at Fair Value - Unrealized Losses in OCI (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Carrying Value	$ 0	$ 23,609
Less than 12 Months, Gross Unrealized Losses	0	(1,966)
Greater than 12 Months, Carrying Value	31	36
Greater than 12 Months, Gross Unrealized Losses	(4)	(5)
Total, Carrying Value	31	23,645
Total, Gross Unrealized Losses	(4)	(1,971)
Non-Agency RMBS
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Carrying Value	0	23,609
Less than 12 Months, Gross Unrealized Losses	0	(1,966)
Greater than 12 Months, Carrying Value	31	36
Greater than 12 Months, Gross Unrealized Losses	(4)	(5)
Total, Carrying Value	31	23,645
Total, Gross Unrealized Losses	$ (4)	$ (1,971)

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