Real Estate Owned, Net - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2025 USD ($) real_estate_owned_asset	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) real_estate_owned_asset
Real Estate [Line Items]
Number of REO assets classified as held for sale investment | real_estate_owned_asset	8		7
Number of real estate owned assets | real_estate_owned_asset	1
Total acquisition price	$ 45,000,000.0
Building and building improvements	19,700,000
Land and land improvements	15,000,000
Acquired intangible assets	14,500,000
Other components	(4,200,000)
Amount charged off	41,824,000	$ 61,013,000	$ 384,603,000
Real estate owned, net	619,796,000		$ 588,185,000
Revenue from real estate owned	37,033,000	0
Expenses from real estate owned	46,302,000	$ 0
Other operating expense	30,100,000
Depreciation and amortization expense	16,200,000
7 Real Estate Owned Assets
Real Estate [Line Items]
Real estate owned, net	86,900,000
Commercial Real Estate
Real Estate [Line Items]
Amount charged off	$ 41,800,000