Real Estate Owned - Additional Information (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Mar. 19, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Real Estate [Line Items]
Principal balance	$ 22,870,848,000			$ 22,870,848,000			$ 23,787,012,000
CECL reserve	893,938,000	$ 751,370,000	$ 363,875,000	893,938,000	$ 363,875,000		576,936,000	$ 336,591,000	$ 326,137,000
Real estate owned, gross	60,203,000			60,203,000		$ 60,200,000
Amount charged off	12,537,000	$ 61,013,000		73,550,000
Impairment charges recognized for REO assets				0
Income on real estate owned	0		0	0	0
Expenses incurred	963,000		$ 0		$ 0
Depreciation expense	185,000			185,000
Other operating expense	778,000			778,000
Real estate owned, net	60,018,000			$ 60,018,000			$ 0
Commercial Real Estate
Real Estate [Line Items]
Principal balance						90,200,000
CECL reserve						$ 29,100,000
Amount charged off	$ 29,100,000