Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2024	Dec. 31, 2023
Assets
RMBS, pledged assets		$ 1,153,213	$ 973,221
Investments in Servicing Related pledged assets at fair value	[1]	$ 226,782	$ 253,629
Stockholders' Equity
Preferred stock, par value (in dollars per share)		$ 0.01
Preferred stock, shares authorized (in shares)		100,000,000
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common stock, shares authorized (in shares)		500,000,000	500,000,000
Common stock, shares issued (in shares)		31,611,073	30,019,969
Common stock, shares outstanding (in shares)		31,611,073	30,019,969
Series A Preferred Stock [Member]
Stockholders' Equity
Preferred stock, dividend rate, percentage		8.20%	8.20%
Preferred stock, par value (in dollars per share)		$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)		100,000,000	100,000,000
Preferred stock, shares issued (in shares)		2,781,635	2,781,635
Preferred stock, shares outstanding (in shares)		2,781,635	2,781,635
Preferred stock, liquidation preference		$ 69,541	$ 69,541
Series B Preferred Stock [Member]
Stockholders' Equity
Percentage of offering of fixed-to-floating rate cumulative redeemable stock		8.25%	8.25%
Preferred stock, par value (in dollars per share)		$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)		100,000,000	100,000,000
Preferred stock, shares issued (in shares)		1,604,103	2,000,000
Preferred stock, shares outstanding (in shares)		1,604,103	2,000,000
Preferred stock, liquidation preference		$ 40,103	$ 50,000

[1] See Note 9 regarding the estimation of fair value, which approximates carrying value for all pools.