Receivables Due from Servicers - Summary of Receivables Due from Servicers (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Loan principal payments due from servicers	$ 41,425	$ 25,064
Other loan servicing receivables	16,371	15,616
Loan servicing receivables	57,796	40,680
Corporate and escrow advances receivable	27,281	24,964
Toral receivables due from servicers	85,077	65,644
Securitized debt
Related Party Transaction [Line Items]
Loan principal payments due from servicers	41,289	24,400
Other loan servicing receivables	13,122	13,095
Loan servicing receivables	54,411	37,495
Corporate and escrow advances receivable	25,736	21,995
Toral receivables due from servicers	80,147	59,490
Warehouse and Repurchase Facilities and Other
Related Party Transaction [Line Items]
Loan principal payments due from servicers	136	664
Other loan servicing receivables	3,249	2,521
Loan servicing receivables	3,385	3,185
Corporate and escrow advances receivable	1,545	2,969
Toral receivables due from servicers	$ 4,930	$ 6,154