Repurchase Agreements, Loan Participations Sold, Notes Payable and Secured Term Loan, Net - Summary of Interest Expense and Amortization (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jun. 02, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Securities Loaned And Securities Sold Under Agreement To Repurchase Gross Including Not Subject To Master Netting Arrangement [Abstract]
Interest on secured financings		$ 113,300	$ 132,389	$ 116,893
Interest on secured term loan		46,038	20,205	9,454
Interest on debt related to real estate owned		15,587
Amortization of financing costs		21,307	19,638	13,400
Total interest and related expense	$ 6,300	$ 196,232	$ 172,232	$ 139,747