Variable Interest Entities - Assets and Liabilities of Consolidated VIEs (Detail) - USD ($)	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Assets
Cash and cash equivalents	$ 323,483,000	$ 350,014,000
Loans receivable	19,047,518,000	23,787,012,000	$ 25,017,880,000
Current expected credit loss reserve	(733,936,000)	(576,936,000)	$ (326,137,000)
Loans receivable, net	18,313,582,000	23,210,076,000
Real estate owned, net	588,185,000	0
Other assets	572,253,000	476,088,000
Total Assets	19,801,955,000	24,036,178,000
Liabilities
Other liabilities	282,847,000	362,531,000
Total Liabilities	16,007,766,000	19,648,674,000
Securitized debt obligations, net
Liabilities
Securitized debt obligations, net	1,936,956,000	2,505,417,000
VIE
Assets
Cash and cash equivalents	9,145,000	0
Loans receivable	2,338,201,000	3,061,278,000
Current expected credit loss reserve	(202,400,000)	(183,508,000)
Loans receivable, net	2,135,801,000	2,877,770,000
Real estate owned, net	177,322,000	0
Other assets	126,518,000	103,692,000
Total Assets	2,448,786,000	2,981,462,000
Liabilities
Other liabilities	13,277,000	8,101,000
Total Liabilities	1,950,233,000	2,513,518,000
VIE | Securitized debt obligations, net
Liabilities
Securitized debt obligations, net	$ 1,936,956,000	$ 2,505,417,000