Securities, at Fair Value - Composition of Agency MBS Portfolio (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Fair  Value	[1]	$ 746,090	$ 333,364
5.00% Coupon
Debt Securities, Available-for-sale [Line Items]
Coupon rate (in percent)		5.00%
Current Face		$ 76,360
Weighted Average Purchase Price (in percent)		100.20%
Weighted Average Market Price (in percent)		99.10%
Fair  Value		$ 75,650
Weighted Average Loan Age (Months)		9 months
CPR (in percent)		2.40%
5.50% Coupon
Debt Securities, Available-for-sale [Line Items]
Coupon rate (in percent)		5.50%
Current Face		$ 277,885
Weighted Average Purchase Price (in percent)		100.40%
Weighted Average Market Price (in percent)		100.70%
Fair  Value		$ 279,851
Weighted Average Loan Age (Months)		11 months
CPR (in percent)		5.20%
6.00% Coupon
Debt Securities, Available-for-sale [Line Items]
Coupon rate (in percent)		6.00%
Current Face		$ 177,842
Weighted Average Purchase Price (in percent)		100.00%
Weighted Average Market Price (in percent)		101.70%
Fair  Value		$ 180,841
Weighted Average Loan Age (Months)		7 months
CPR (in percent)		4.20%
6.50% Coupon
Debt Securities, Available-for-sale [Line Items]
Coupon rate (in percent)		650.00%
Current Face		$ 22,213
Weighted Average Purchase Price (in percent)		100.10%
Weighted Average Market Price (in percent)		102.70%
Fair  Value		$ 22,802
Weighted Average Loan Age (Months)		4 months
CPR (in percent)		1.40%
Agency MBS
Debt Securities, Available-for-sale [Line Items]
Current Face		$ 554,300	131,165
Weighted Average Purchase Price (in percent)		100.30%
Weighted Average Market Price (in percent)		100.90%
Fair  Value		$ 559,144	$ 131,700
Weighted Average Loan Age (Months)		9 months
CPR (in percent)		4.30%

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