FAIR VALUE MEASUREMENTS - Schedule of Fair Value of Derivative Instruments and Loans Held for Sale (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Derivative notional amount and balance sheet location
Estimated Gain on Sale	$ 51,457	$ 77,152
Total Fair Value Adjustment	51,457	77,152
Derivative assets	255,295	37,364
Derivative Liabilities	(24,054)	(6,403)
Fair Value Adjustment to Loans Held for Sale	(179,784)	46,191
Loans Held for Sale
Derivative notional amount and balance sheet location
Notional or Principal Amount	2,359,901	1,765,395
Estimated Gain on Sale	29,624	47,315
Interest Rate Movement	(209,408)	(1,124)
Total Fair Value Adjustment	(179,784)	46,191
Fair Value Adjustment to Loans Held for Sale	(179,784)	46,191
Forward Sale Contracts
Derivative notional amount and balance sheet location
Notional or Principal Amount	3,230,106	2,881,224
Interest Rate Movement	246,745	5,728
Total Fair Value Adjustment	246,745	5,728
Derivative assets	246,826	10,838
Derivative Liabilities	(81)	(5,110)
Rate Lock Commitments
Derivative notional amount and balance sheet location
Notional or Principal Amount	870,205	1,115,829
Estimated Gain on Sale	21,833	29,837
Interest Rate Movement	(37,337)	(4,604)
Total Fair Value Adjustment	(15,504)	25,233
Derivative assets	8,469	26,526
Derivative Liabilities	$ (23,973)	$ (1,293)