Securities, at Fair Value - Residential Mortgage Securities (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Fair  Value	[1]	$ 746,090	$ 333,364
Agency MBS
Debt Securities, Available-for-sale [Line Items]
Principal/ Current Face		554,300	131,165
Purchase Premiums		1,824	860
Accretable Purchase Discounts		(500)	0
Discount Designated as Credit Reserve		0	0
Gross Amortized Cost		555,624	132,025
Gross Unrealized Gains		4,355	0
Gross Unrealized Losses		(835)	(325)
Net Unrealized Gain/(Loss)		3,520	(325)
Fair  Value		559,144	131,700
Other Securities
Debt Securities, Available-for-sale [Line Items]
Principal/ Current Face		193,102	215,649
Purchase Premiums		19,686	18,344
Accretable Purchase Discounts		(5,637)	(6,272)
Discount Designated as Credit Reserve		(40,514)	(46,332)
Gross Amortized Cost		166,637	181,389
Gross Unrealized Gains		20,437	21,473
Gross Unrealized Losses		(128)	(1,198)
Net Unrealized Gain/(Loss)		20,309	20,275
Fair  Value		186,946	201,664
Residential Mortgage Securities
Debt Securities, Available-for-sale [Line Items]
Principal/ Current Face		747,402	346,814
Purchase Premiums		21,510	19,204
Accretable Purchase Discounts		(6,137)	(6,272)
Discount Designated as Credit Reserve		(40,514)	(46,332)
Gross Amortized Cost		722,261	313,414
Gross Unrealized Gains		24,792	21,473
Gross Unrealized Losses		(963)	(1,523)
Net Unrealized Gain/(Loss)		23,829	19,950
Fair  Value		746,090	333,364
CRT Securities
Debt Securities, Available-for-sale [Line Items]
Gross Unrealized Gains		2,300	131
Gross Unrealized Losses		0	(1,200)
Fair  Value		51,200	48,600
Non-Agency MBS
Debt Securities, Available-for-sale [Line Items]
Gross Unrealized Gains		474	0
Gross Unrealized Losses		(128)	0
Fair  Value		$ 23,800	$ 24,600

[1] See Note 6 for information regarding the Company’s pledged assets.