FAIR VALUE MEASUREMENTS - Summary of Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Assets
Loans held for sale	$ 1,436,350	$ 780,749
Pledged securities	224,954	206,904
Derivative assets	27,216	30,175
Liabilities
Derivative liabilities	1,718	915
Contingent consideration liabilities	9,663	30,537
Recurring Basis
Assets
Loans held for sale	1,436,350	780,749
Pledged securities	224,954	206,904
Derivative assets	27,216	30,175
Total financial assets	1,688,520	1,017,828
Liabilities
Derivative liabilities	1,718	915
Corporate notes payable -Senior Notes	400,927
Contingent consideration liabilities	9,663	30,537
Total financial liabilities	412,308	31,452
Level 1 | Recurring Basis
Assets
Pledged securities	22,288	23,472
Total financial assets	22,288	23,472
Level 2 | Recurring Basis
Assets
Loans held for sale	1,436,350	780,749
Pledged securities	202,666	183,432
Derivative assets	27,216	30,175
Total financial assets	1,666,232	994,356
Liabilities
Derivative liabilities	1,718	915
Corporate notes payable -Senior Notes	400,927
Total financial liabilities	402,645	915
Level 3 | Recurring Basis
Liabilities
Contingent consideration liabilities	9,663	30,537
Total financial liabilities	$ 9,663	$ 30,537