Investments in MSR Financing Receivables - Schedule of Investment in MSR Finance Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Receivables [Abstract]
Balance at period beginning	$ 120,260	$ 74,652	$ 125,018	$ 9,346
Capital investments	40,474	35,601	61,693	95,223
Capital distributions	(4,049)	3,816	68,601	3,816
Accretion of interest income	3,608	1,945	10,973	3,693
Changes in valuation inputs and assumptions	4,292	4,452	35,502	8,388
Balance at period end	$ 164,585	$ 112,834	$ 164,585	$ 112,834