DERIVATIVES - Derivatives Recorded at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Derivative [Line Items]
Derivative assets	$ 353,073	$ 138,173
Derivative liabilities	67,314	34,583
Interest rate swaps
Derivative [Line Items]
Derivative assets	3,291	52
Derivative asset, variation margin accounts	1,200,000	60,700
Interest rate lock commitments
Derivative [Line Items]
Derivative assets	13,787	114,871
Derivative liabilities	56,653	3,093
TBAs
Derivative [Line Items]
Derivative assets	335,995	15,472
Derivative liabilities	10,661	31,490
Options on treasury futures
Derivative [Line Items]
Derivative assets	$ 0	$ 7,778