FAIR VALUE MEASUREMENTS - Summary of Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Assets
Loans held for sale	$ 931,516	$ 1,811,586
Pledged securities	149,560	148,996	$ 146,548	$ 137,236
Derivative assets	59,810	37,364
Liabilities
Derivative liabilities	17,176	6,403
Recurring Basis
Assets
Loans held for sale	931,516	1,811,586
Pledged securities	149,560	148,996
Derivative assets	59,810	37,364
Total financial assets	1,140,886	1,997,946
Liabilities
Derivative liabilities	17,176	6,403
Contingent consideration liabilities	218,192	125,808
Total financial liabilities	235,368	132,211
Level 1 | Recurring Basis
Assets
Pledged securities	10,149	44,733
Total financial assets	10,149	44,733
Level 2 | Recurring Basis
Assets
Loans held for sale	931,516	1,811,586
Pledged securities	139,411	104,263
Total financial assets	1,070,927	1,915,849
Level 3 | Recurring Basis
Assets
Derivative assets	59,810	37,364
Total financial assets	59,810	37,364
Liabilities
Derivative liabilities	17,176	6,403
Contingent consideration liabilities	218,192	125,808
Total financial liabilities	$ 235,368	$ 132,211